Available to hire
Blockchain-focused full stack engineer specializing in the design, development, and integration of decentralized technologies. Skilled in building robust backends, blockchain infrastructure, and Web3 applications with emphasis on scalability, security, and maintainable software architecture.
Passionate about delivering high-quality engineering solutions that bridge traditional software systems with emerging decentralized ecosystems.
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Language
Javanese
Fluent
English
Fluent
Work Experience
Software Engineer at Cognizant
July 31, 2025 - September 4, 2025Led development of a healthcare claims adjudication platform by decomposing a legacy system into Spring Boot 3.x and Kotlin microservices deployed on Azure Kubernetes Service. Designed real-time payment validation pipelines with Apache Kafka and Kafka Streams that integrated fraud-detection models, reducing financial fraud exposure by 22%. Introduced Kotlin coroutines to high-throughput services, improving latency and simplifying asynchronous logic by 25%. Migrated core financial services from ASP.NET Web API to Spring Boot, building gRPC adapters for secure cross-platform calls, cutting response times by 35%. Implemented HIPAA-compliant interoperability adapters in Spring Boot for EHR data exchange, enhancing patient record synchronization and compliance. Architected a claims reconciliation engine that automated nightly settlement processes, reducing failed reconciliations by 40%. Built fraud detection dashboards using React and Redux, consuming Kafka event streams and reducing invest
Senior Software Engineer at Cognizant
July 1, 2025 - September 26, 2025Developed and maintained the Neuro AI platform using .NET on the backend and Angular on the frontend, ensuring responsive design, enterprise-scale scalability, and cross-device stability for decision-intelligence workflows. Integrated a hybrid CMS (Drupal + Strapi Router) to streamline AI insights delivery and improve content workflows for enterprise users. Built secure RESTful APIs with role-based authentication, reducing access-related issues by 40% and strengthening compliance with enterprise security standards. Optimized Angular components with lazy loading, reducing initial load times by 30%. Deployed the Neuro AI platform using Docker and implemented CI/CD pipelines, enabling reliable staging and production releases. Collaborated with designers, product managers, and stakeholders to deliver mission-critical AI features within accelerated timelines.
Software Engineer at Cognizant
July 1, 2025 - September 26, 2025Developed and maintained the Neuro AI platform using .NET on the backend and Angular on the frontend, ensuring responsive design, enterprise-grade scalability, and cross-device stability for decision intelligence workflows. Integrated a hybrid CMS setup using Drupal and Strapi Router to streamline AI insights delivery and enhance content workflows for enterprise users and stakeholders. Built secure RESTful APIs with role-based authentication, reducing access-related issues and strengthening compliance with security standards. Optimized Angular components with lazy loading to reduce initial load times and improve responsiveness for enterprise users. Collaborated with designers, product managers, and stakeholders to deliver mission-critical AI features on accelerated timelines, aligning with Cognizant’s digital transformation goals. Deployed the Neuro AI platform using Docker and implemented CI/CD pipelines, streamlining staging and production workflows while ensuring reliable, repeata
Software Engineer at Cognizant
July 1, 2025 - September 4, 2025Led development of a healthcare claims adjudication platform by decomposing legacy systems into Spring Boot 3.x and Kotlin microservices deployed on Azure Kubernetes Service (AKS). Designed real-time payment validation pipelines with Apache Kafka and Kafka Streams, integrating fraud-detection models to instantaneously flag suspicious claims, reducing financial fraud exposure by 22%. Introduced Kotlin coroutines for high-throughput services, cutting latency and simplifying asynchronous logic by 25%. Migrated core financial services from ASP.NET Web API to Spring Boot with gRPC inter-service calls, improving response times by 35% and securing cross-platform transactions. Implemented HIPAA-compliant interoperability with HL7 and FHIR standards, enhancing patient record synchronization across partners. Architected claims reconciliation engine using Spring Batch and PostgreSQL, automating nightly settlement processes and reducing failed reconciliations by 40%. Built fraud detection dashboar
Software Engineer at Cognizant
July 1, 2025 - September 4, 2025Led development of a healthcare claims adjudication platform by decomposing a legacy system into Spring Boot 3.x and Kotlin microservices deployed on Azure Kubernetes Service (AKS). Designed real-time payment validation pipelines using Apache Kafka and Kafka Streams, integrating fraud-detection models to reduce financial fraud exposure by 22%. Introduced Kotlin coroutines to improve service throughput and reduce latency by 25%, enabling faster onboarding. Migrated core financial services to Spring Boot while maintaining backward compatibility with .NET Core integrations, cutting request-response times by 35%. Implemented HIPAA-compliant interoperability adapters with HL7 and FHIR standards for secure EHR data exchange. Architected claims reconciliation engine automating nightly settlements, reducing failed reconciliations by 40%. Delivered interactive fraud detection dashboards using React and Redux, improving investigation times by 50%. Designed patient payment systems integrating ACH
Full Stack Blockchain Engineer at Nova Chain Labs
March 1, 2025 - May 1, 2026Delivered enterprise-grade Web3 solutions for global clients, including DeFi platforms, token ecosystems, and decentralized applications. Designed and deployed 20+ Solidity smart contracts across Ethereum and EVM-compatible networks with strong security practices. Architected scalable full-stack applications handling 50K+ monthly blockchain transactions. Improved smart contract efficiency by 35% through gas optimization, code refactoring, and security enhancements.
Chain Token Bridge (Project)
May 1, 2024 - July 1, 2024Developed 5+ Solidity smart contracts for token locking, minting, burning, and cross-chain transaction management. Integrated 2 EVM-compatible networks enabling secure token transfers between blockchain environments. Built Web3 dashboards supporting wallet connection, bridge transactions, and real-time transaction status tracking. Implemented automated smart contract testing with 90%+ test coverage using Hardhat. Optimized contract logic and transaction workflows, reducing unnecessary gas consumption by 25%.
Universal Cross-Chain Bridge (UCCB) (Project)
October 1, 2023 - May 1, 2026Developed 6+ Solidity smart contracts for token locking, minting, burning, and cross-chain transaction validation. Integrated 3 EVM-compatible blockchain networks to enable seamless asset transfers across different ecosystems. Implemented validator and relayer mechanisms to securely process and verify cross-chain transactions. Built Web3 interfaces supporting wallet connectivity, bridge operations, and transaction monitoring. Achieved 90%+ smart contract test coverage using automated testing workflows with blockchain development frameworks.
Full Stack Blockchain Developer at BlockForge Technologies
July 1, 2023 - December 1, 2024Built and launched 8+ decentralized applications integrating smart contracts, wallets, and blockchain protocols. Developed scalable front-end and back-end systems using Next.js, TypeScript, and Node.js, improving application performance by 40%. Implemented 15+ smart contracts for DeFi, NFTs, and token-based applications with security-focused development practices. Integrated Ethereum and EVM ecosystems, supporting 10K+ active users across blockchain platforms. Improved API response times by 30% through backend optimization and database architecture enhancements.
Full Stack Blockchain Developer at Block Forge Technologies
July 1, 2023 - December 1, 2024Built and launched 8+ decentralized applications integrating smart contracts, wallets, and blockchain protocols. Developed scalable frontend and backend systems using Next.js, TypeScript, and Node.js, improving application performance by 40%. Implemented 15+ smart contracts for DeFi, NFT, and token-based applications using security-focused development practices. Integrated Ethereum and EVM ecosystems, supporting 10K+ active users across blockchain platforms. Improved API response times by 30% through backend optimization and database architecture improvements.
Decentralized Stablecoin Protocol (Project)
April 1, 2023 - June 1, 2024Developed 8+ Solidity smart contracts for collateral management, stablecoin minting, burning, and liquidation workflows. Implemented an over-collateralized lending mechanism with automated health factor monitoring and risk management. Integrated decentralized price feeds using Chainlink oracles to maintain accurate collateral valuation. Built comprehensive smart contract testing with 95%+ test coverage using Foundry and Solidity testing frameworks. Optimized gas usage and contract architecture, improving transaction efficiency by 25% through code refinement.
Supply Chain Blockchain DApp (Project)
January 1, 2023 - June 1, 2026Developed 5+ Solidity smart contracts for product registration, ownership transfer, and supply chain verification workflows. Implemented 4 stakeholder roles with role-based access control for manufacturers, distributors, retailers, and customers. Built a Web3 dashboard enabling users to track product status and verify supply chain records via blockchain transactions. Integrated Ethereum smart contracts with a modern frontend to support real-time product lifecycle tracking. Added automated testing and contract validation workflows to improve reliability and reduce transaction errors.
Junior Blockchain Developer (Web3) at Innovaition Innovations
September 1, 2021 - June 1, 2023Developed and tested 10+ smart contracts under senior engineering guidance using Solidity and Ethereum tools. Built reusable frontend components and backend services for 5+ blockchain-powered applications. Contributed to code reviews, testing, and debugging, reducing development issues by 25%. Integrated Web3 wallets, token standards, and blockchain APIs to enhance decentralized application functionality.
Junior Blockchain Developer at Web3 Innovations
September 1, 2021 - June 1, 2023Developed and tested 10+ smart contracts under senior engineering guidance using Solidity and Ethereum tools. Built reusable frontend components and backend services for 5+ blockchain-powered applications. Contributed to code reviews, testing, and debugging, reducing development issues by 25%. Integrated Web3 wallets, token standards, and blockchain APIs to enhance decentralized application functionality.
Blockchain Research Intern at Vrije Universiteit Brussel (VUB)
February 1, 2021 - August 1, 2021Developed and tested 2+ blockchain prototypes to evaluate decentralized application concepts and system performance. Assisted in preparing technical reports and research documentation for project findings.
Senior Software Developer at Tapcheck
January 1, 2021 - September 26, 2025Led development of a modern earned wage access platform using React on the frontend and Python/Django on the backend, focusing on responsive UIs and clean API architecture for employees and HR/admin dashboards. Built scalable REST APIs with Django REST Framework to handle wage requests, transaction histories, and secure disbursements, with versioning, filtering, and role-based permissions. Integrated external payroll and HR systems via APIs and adapters, normalizing structured data into Django models while implementing retries, audit trails, and compliance logging. Owned key infrastructure components like RBAC, custom authentication middleware, and token/session management (Django + Redis) to ensure secure and low-latency user access. Implemented background processing with Celery and RabbitMQ for long-running tasks. Designed and optimized PostgreSQL schemas via Django ORM, indexing high-volume queries to keep payout and reporting operations performant under heavy load. Deployed service
Senior Software Developer at Tapcheck
January 1, 2021 - September 26, 2025Led development of a modern earned wage access platform using React on the frontend and Python/Django on the backend, focusing on responsive UIs and clean API architecture for employees and HR/admin dashboards. Built and maintained scalable REST APIs with Django Rest Framework (DRF) to handle wage requests, transaction histories, and secure disbursements, with versioning, filtering, and role-based permissions built in. Integrated external payroll and HR systems via APIs and file-based adapters, normalizing structured data into Django models while implementing retries, audit trails, and compliance logging. Owned key infrastructure components like RBAC, custom authentication middleware, and token/session management, using Django + Redis to ensure secure and low-latency user access. Implemented background processing with Celery and RabbitMQ for long-running tasks such as wage settlement, batch payroll reconciliation, and transaction reporting. Designed and optimized PostgreSQL schemas via
Senior Software Developer at Tapcheck
January 1, 2021 - September 4, 2025Engineered real-time payroll disbursement microservices in Java (Spring Boot 2.x) and Kotlin processing thousands of wage-advance requests daily. Designed event-driven Kafka pipelines to ensure low-latency payouts during peak monthly demand spikes. Developed payment authorization workflows integrating ACH, Visa, Mastercard, and regional banking APIs with Spring Security OAuth 2.0 and PCI-DSS encryption standards, reducing chargeback incidents by 18%. Built payroll synchronization services in Kotlin with PostgreSQL and DynamoDB, improving payout accuracy by 30% and reducing discrepancies. Modernized core payout APIs by migrating legacy synchronous .NET components to asynchronous Java gRPC services, reducing processing latency by 25%. Designed fraud detection pipeline with Kafka and AWS SageMaker analyzing streaming payroll and payment data, flagging high-risk transactions under 5 seconds to prevent financial losses. Implemented bank reconciliation services in Spring Boot matching ACH an
Senior Software Developer at Tapcheck
January 1, 2021 - September 4, 2025Engineered real-time payroll disbursement microservices using Java (Spring Boot 2.x) and Kotlin processing thousands of wage-advance requests daily via event-driven Kafka pipelines ensuring low latency. Developed payment authorization workflows integrating ACH, Visa, Mastercard, and regional banking APIs with Spring Security, OAuth 2, and PCI-DSS encryption reducing chargeback incidents by 18%. Built payroll synchronization services in Kotlin with PostgreSQL and DynamoDB handling millisecond-level lookups, improving payout accuracy by 30%. Modernized core payout APIs migrating legacy synchronous .NET components to asynchronous Java gRPC services, reducing processing latency by 25%. Designed fraud detection pipeline combining Kafka with AWS SageMaker streaming payroll and payment data to flag suspicious transactions under 5 seconds, preventing major losses. Implemented bank reconciliation services in Spring Boot matching ACH and settlement records with optimized PostgreSQL queries reduc
Senior Software Developer at Tapcheck
January 1, 2021 - September 4, 2025Engineered real-time payroll disbursement microservices using Java (Spring Boot 2.x) and Kotlin processing thousands of wage-advance requests daily with event-driven Kafka pipelines, ensuring low-latency payouts. Developed payment authorization workflows integrated with ACH, Visa, Mastercard, and regional banking APIs with Spring Security, OAuth 2, and PCI-DSS standards, reducing chargebacks by 18%. Built payroll synchronization services in Kotlin with PostgreSQL and DynamoDB handling millisecond-level lookups for employee wage eligibility, improving payout accuracy by 30% and reducing discrepancies. Modernized core payout APIs by migrating legacy synchronous .NET components to asynchronous Java gRPC services, decreasing latency by 25%. Designed fraud detection pipelines with Kafka and AWS SageMaker to analyze streaming payroll data in near real time, flagging suspicious transactions under 5 seconds preventing major losses. Implemented bank reconciliation services matching ACH and sett
Full Stack Developer at SalusO
November 1, 2018 - September 4, 2025Developed core patient wellness platform using Java (Spring Boot) and Kotlin services for health record storage, appointment scheduling, and billing workflows prioritizing HIPAA compliance with strict audit logging, data encryption, and role-based access controls. Designed patient engagement portal with React and Redux featuring health dashboards, care plans, and appointment management, introducing component reusability and lazy loading to reduce frontend bundle sizes by 30%. Implemented secure real-time communications with Node.js and Web Sockets allowing patients to message providers and receive instant notifications on prescription updates and lab results, improving patient response times and reducing missed follow-ups by 25%. Built Spring Boot APIs for insurance claim submission and verification integrating with third-party clearinghouses with retry logic and circuit breakers using Resilience4j, reducing claim rejection rates by 15% for small practices lacking automation. Collabora
Full Stack Developer at SalusO
November 1, 2018 - September 4, 2025Developed core patient wellness platform using Java (Spring Boot) and Kotlin services for health record storage, appointment scheduling, and billing workflows prioritizing HIPAA compliance with strict audit logging, data encryption, and role-based access controls reducing manual paperwork by 60%. Designed patient engagement portal with React and Redux providing dashboards for health metrics, care plans, and appointment management using component reusability and lazy loading decreasing front-end bundle sizes by 30%. Implemented secure real-time communication features with Node.js and WebSockets enabling patients to message providers and receive instant notifications about prescription updates or lab results improving patient response times and reducing missed follow-ups by 25%. Built Spring Boot APIs for insurance claim submission and verification integrating third-party clearinghouses including retry logic with circuit breakers using Resilience4j reducing claim rejection rates by 15% f
Full Stack Developer at SalusO
November 1, 2018 - September 4, 2025Developed core patient wellness platform using Java (Spring Boot) and Kotlin services for health record storage, appointment scheduling, and billing workflows emphasizing HIPAA compliance with strict audit logging, data encryption, and role-based access controls. Designed React and Redux patient engagement portals providing dashboards for health metrics and appointment management, introducing component reusability and lazy loading which cut front-end bundle sizes by 30% improving load times. Implemented secure real-time communications with Node.js and WebSockets enabling patients to message providers and receive instant notifications reducing missed follow-ups by 25%. Created Spring Boot APIs for insurance claims submission and verification integrating third-party clearinghouses with retry logic and circuit breakers using Resilience4j, reducing claim rejection rates by 15% for smaller practices. Collaborated with clinicians and product owners to capture requirements and translate clini
Full Stack Developer at SalusO
January 1, 2018 - September 26, 2025Joined as the first engineer at SalusO, defined the core stack (Python, C# for back ends, React for frontend), and built the foundation for a secure, scalable health data platform. Developed HIPAA-compliant APIs with Flask/FastAPI and .NET Core, powering patient, provider, and administrator workflows across the platform. Automated ETL pipelines in Python (Pandas, SQLAlchemy), streamlining health and wellness data ingestion and reducing reporting delays by 35%. Integrated and modernized legacy C# systems, unifying them with new Python microservices to deliver a single secure and consistent experience. Migrated services to Azure Kubernetes Service (AKS), improving reliability and scalability, and raising uptime from 96% to 99.9%. Collaborated with leadership, clinicians, and researchers to shape the product roadmap.
Full Stack Developer at SalusO
January 1, 2018 - September 26, 2025Joined as the first engineer at SalusO, defined the core stack (Python, C# for back ends, React for frontend), and built the foundation for a secure, scalable health data platform. Developed HIPAA-compliant APIs with Flask/FastAPI and .NET Core, powering patient, provider, and administrator workflows across the platform. Automated ETL pipelines in Python (Pandas, SQLAlchemy), streamlining health and wellness data ingestion and reducing reporting delays by 35%. Integrated and modernized legacy C# systems, unifying them with new Python microservices to deliver a single secure and consistent experience. Migrated services to Azure Kubernetes Service (AKS), improving reliability and scalability, and raising uptime from 96% to 99.9%. Collaborated with leadership, clinicians, and researchers to shape the product roadmap, scaling SalusO from prototype to production-ready deployment.
Software Developer Intern at SalusO
December 1, 2015 - September 26, 2025Contributed to SalusO’s platform development using React, HTML5, CSS3, and modern JavaScript, ensuring responsive layouts across devices and improving accessibility for patients and clinicians. Assisted in backend feature development by implementing Flask/FastAPI endpoints and .NET Core APIs for user authentication, scheduling, and health record management. Gained hands-on experience with relational database design by creating and optimizing PostgreSQL schemas, writing queries for reporting dashboards, and supporting QA in validating data integrity during clinical and administrative workflows.
Software Developer Intern at SalusO
December 1, 2015 - September 26, 2025Contributed to SalusO’s platform development using React, HTML5, CSS3, and modern JavaScript, ensuring responsive layouts across devices and improving accessibility for patients and clinicians. Assisted in backend feature development by implementing Flask/FastAPI endpoints and .NET Core APIs for user authentication, scheduling, and health record management, accelerating deliverables under senior developer guidance. Gained hands-on experience with relational database design by creating and optimizing PostgreSQL schemas, writing queries for reporting dashboards, and supporting QA in validating data integrity during clinical and administrative workflows.
Software Developer Intern at SalusO
December 1, 2015 - September 4, 2025Assisted in development of Java (Spring MVC) web applications implementing CRUD modules for internal HR and payroll systems while learning MVC architecture and Hibernate ORM for persistence in enterprise systems. Contributed to front-end updates with JavaScript, jQuery, and Bootstrap enhancing usability of employee self-service portals improving page responsiveness and accessibility with mobile-first principles. Built SQL queries and stored procedures in MySQL to support reporting features, gaining experience debugging query performance and validating data accuracy for HR audits. Created unit tests with JUnit and Mockito validating service-layer functionality, introducing test coverage to previously untested modules. Shadowed senior engineers in Agile stand-ups and sprint planning gaining practical exposure to Scrum workflow and Jira for backlog management. Documented application modules, REST API endpoints, and onboarding guides for future interns and junior developers reducing ramp-u
Software Developer Intern at SalusO
December 1, 2015 - September 4, 2025Assisted in development of Java (Spring MVC) web applications implementing CRUD modules for internal HR and payroll systems learning MVC architecture and Hibernate ORM for persistence. Contributed to front-end updates with JavaScript, jQuery, and Bootstrap enhancing usability and applying mobile-first principles. Built SQL queries and stored procedures in MySQL supporting reporting features gaining experience debugging query performance and validating data accuracy. Created unit tests with JUnit and Mockito introducing testing coverage for modules that previously lacked it. Shadowed senior engineers in Agile stand ups and sprint planning gaining practical exposure to Scrum workflows and Jira backlog management. Documented application modules, REST API endpoints, and onboarding guides reducing ramp-up time for future interns and junior developers by 20%.
Software Developer Intern at SalusO
December 1, 2015 - September 4, 2025Assisted in developing Java (Spring MVC) web applications implementing CRUD modules for internal HR and payroll systems gaining foundational experience in MVC architecture and Hibernate ORM. Contributed front-end updates with JavaScript, jQuery, and Bootstrap enhancing usability of employee self-service portals improving page responsiveness and accessibility by applying mobile-first principles. Built SQL queries and stored procedures in MySQL supporting reporting features, acquiring skills in debugging query performance and validating data accuracy for HR audits. Created unit tests with JUnit and Mockito to validate service layer functionality introducing testing coverage for modules previously lacking it. Shadowed senior engineers in Agile stand-ups and sprint planning gaining practical exposure to real-world Scrum workflows and Jira backlog management. Documented application modules, REST API endpoints, and onboarding guides for future interns reducing ramp-up time for subsequent hir
Education
Bachelor's Degree at University of Houston
January 1, 2010 - January 1, 2014Bachelor's Degree in Computer Science at University of Houston
January 1, 2010 - January 1, 2014Bachelor's Degree at University of Houston
January 1, 2010 - January 1, 2014Bachelor's Degree in Computer Science at University of Houston
January 1, 2010 - January 1, 2014Bachelor's Degree in Computer Science at University of Houston
January 1, 2010 - January 1, 2014Bachelor's Degree in Computer Science at Vrije Universiteit Brussel (VUB)
September 1, 2018 - June 1, 2021Bachelor's Degree in Computer Science at Vrije Universiteit Brussel (VUB)
September 1, 2018 - June 1, 2021Qualifications
Industry Experience
Healthcare, Financial Services, Software & Internet, Life Sciences, Professional Services, Computers & Electronics
• Developed 8+ Solidity smart contracts for collateral management, stablecoin minting, burning, and liquidation workflows.
• Implemented an over-collateralized lending mechanism with automated health factor monitoring and risk management.
• Integrated decentralized price feeds using Chainlink oracles to maintain accurate collateral valuation.
• Built comprehensive smart contract testing with 95%+ test coverage using Foundry and Solidity testing frameworks.
• Optimized gas usage and contract architecture, improving transaction efficiency by 25% through code refinement.
• Developed 6+ Solidity smart contracts for token locking, minting, burning, and cross-chain transaction validation.
• Integrated 3 EVM-compatible blockchain networks to enable seamless asset transfers across different ecosystems.
• Implemented validator and relayer mechanisms to securely process and verify cross-chain transactions.
• Built a Web3 interface supporting wallet connectivity, bridge operations, and transaction monitoring.
• Achieved 90%+ smart contract test coverage with automated testing workflows using blockchain development frameworks.
• Developed 5+ Solidity smart contracts to manage product registration, ownership transfer, and supply chain verification workflows.
• Implemented 4 stakeholder roles including manufacturers, distributors, retailers, and customers with role-based access control.
• Built a Web3 dashboard enabling users to track product status and verify supply chain records through blockchain transactions.
• Integrated Ethereum smart contracts with a modern frontend to support real-time product lifecycle tracking.
• Added automated testing and contract validation workflows to improve reliability and reduce transaction errors
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