Available to hire
I’m Sunil Kumar Madikanti, a Senior .NET Full Stack Developer with 8+ years of experience building and scaling modern web platforms using ASP.NET Core, C#, React, and Azure. I own backend API development, frontend feature delivery, architecture decisions, and end-to-end cloud deployments, with strong SQL Server, EF Core, REST API design, and cloud service expertise. I work well independently and proactively communicate with stakeholders to drive long-term platform growth.
I have practical experience in CI/CD, DevOps, performance optimization for high-traffic systems, and observability using Application Insights and Sentry. I enjoy collaborating across teams, setting coding standards, and delivering reliable, scalable solutions that reduce costs and improve user experience.
Skills
Experience Level
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Language
English
Fluent
Javanese
Advanced
Aragonese
Advanced
Bashkir
Advanced
Work Experience
Senior Software Engineer at Amazon Inc.
September 1, 2021 - PresentLed AI-powered personalization features for Alexa Smart Home by integrating OpenAI and Claude LLM APIs; implemented prompt engineering and chain-of-thought strategies to generate personalized outputs based on user behavior, achieving high intent classification accuracy across tens of millions of daily interactions. Built cross-platform mobile/web interfaces with real-time device state synchronization via WebSocket, push notification scheduling, and offline-capable storage. Designed and maintained Node.js backends processing large-scale requests with JWT-based auth, RBAC, and secure credential storage. Architected AWS-based storage, Lambda, SQS, and data pipelines for scalable content delivery and analytics.
Senior Software Engineer at Comcast Corporation
February 1, 2019 - September 1, 2021Integrated AI-driven recommendation APIs and NLP models into customer-facing React Native and web apps for 20M+ users; built a real-time feature serving layer with Redis caching and an A/B testing framework to drive engagement. Developed Python FastAPI and Node.js microservices handling large-scale transactions with robust validation and secure credential handling. Designed Kafka-based data ingestion pipelines feeding AWS S3 data lake and PostgreSQL analytics stores, enabling real-time analytics and ML model training. Optimized mobile performance and security with encrypted storage, certificate pinning, and secure token refresh. Collaborated with product teams to deliver MVPs and maintained API documentation.
Software Engineer at Informational Systems, UMKC
January 1, 2018 - December 31, 2018Developed a full-stack mobile-first financial management app using React Native and Node.js/Express with MongoDB on AWS. Implemented JWT authentication, RBAC, encrypted data storage, and real-time push notifications for multi-device synchronization. Integrated AI-compatible ML models for automated expense categorization, anomaly detection, and personalized budgeting insights, with analytics dashboards surfacing spending insights and automated budget revisions.
Junior Software Engineer at Robotics R&D, MGIT
January 1, 2013 - May 1, 2017Built Python FastAPI and Flask backend services exposing AI model inference APIs for NLP and speech recognition, with REST and gRPC interfaces supporting 100K+ daily requests. Created frontend dashboards with D3.js for ML performance monitoring and training progress. Deployed cloud infrastructure on AWS with CloudFormation, 10TB+ training datasets, and automated lifecycle management; authored deployment guides and technical documentation.
Senior Software Engineer - Alexa Smart Home at Amazon
September 1, 2021 - PresentLed end-to-end development of scalable full-stack features for Alexa Smart Home, owning features from system design through production deployment and maintaining 99.95% uptime for millions of daily users. Designed event-driven microservices using AWS Step Functions, Lambda, DynamoDB, and SQS, achieving improved latency (P99 down to ~120ms) through DynamoDB single-table design and Redis caching. Collaborated with product, design, and cross-functional teams across time zones to gather requirements, define technical approaches, and deliver features on cadences. Implemented security controls including OAuth 2.0 and JWT authentication, rate limiting, and fine-grained data access policies, and integrated with 15+ third-party IoT vendors with secure API protocols.
Software Engineer - Full Stack at Comcast Corporation
February 1, 2019 - September 1, 2021Led full-stack development of a cloud-native customer gateway activation platform serving 20M+ subscribers. Built React/TypeScript SPAs with Redux and Next.js SSR, paired with Java Spring Boot and Node.js backend services handling 10M+ daily transactions. Delivered high-reliability payment and account activation workflows with circuit breakers, structured error handling, and graceful degradation ensuring 99.9% service availability. Executed zero-downtime migration of 20M customer financial records with full data integrity guarantees. Engaged with product and business stakeholders to translate requirements into technical specs and guided the delivery lifecycle, improving team velocity through Kanban optimization and GitLab CI/CD automation.
Software Engineer - Full Stack at Informational Systems, UMKC
January 1, 2018 - December 1, 2018Led a team of 4 developers to build a full-stack financial management platform from ideation through production using React, Node.js/Express, and MongoDB on AWS. Delivered real-time expense tracking, budgeting, and bill splitting with JWT authentication and RBAC. Designed scalable RESTful APIs with Swagger, implemented WebSocket-based real-time notifications, and optimized MongoDB schemas with indexing for complex financial aggregation queries.
Senior Full Stack Software Engineer at Amazon Inc.
September 1, 2021 - PresentLed design and development of scalable distributed services for Alexa SmartHome, architecting event-driven microservices on AWS Step Functions, Lambda, DynamoDB, and SQS delivering 99.99% reliability. Built end-to-end full-stack features with React/TypeScript frontend, Node.js and Java backends, and real-time WebSocket communication; designed RESTful and GraphQL APIs handling tens of millions of requests daily with security, rate limiting, and resilience patterns.
Full Stack Software Engineer at Comcast Corporation
February 1, 2019 - September 1, 2021Designed and built high-availability RESTful APIs using Spring Boot and Node.js handling 10M+ daily transactions; implemented circuit breaker patterns, retry logic, and graceful degradation. Migrated from a monolithic system to cloud-native microservices on Kubernetes with Kafka and PostgreSQL; built React/Redux/TypeScript frontends; created AI-assisted tooling to improve developer workflows and code reviews.
Software Engineer at Comcast Corporation
February 1, 2019 - September 1, 2021Full stack platform development for a customer gateway activation platform serving 20M+ subscribers. Delivered high-throughput REST APIs, optimized T‑SQL queries and EF Core usage, and improved API response times to sub-100ms under load. Managed multi-environment deployments with ARM templates and Terraform; implemented GitLab/Azure DevOps CI/CD with blue-green deployments and Redis-backed caching for performance.
Software Developer at Informational Systems, UMKC
January 1, 2018 - December 1, 2018Full stack financial management web application; ported core backend services to ASP.NET Core/C# for improved type safety and performance. Implemented JWT authentication, RBAC, and end-to-end encrypted data handling; designed RESTful APIs with Swagger docs and ensured code quality with unit testing.
Junior Developer at Robotics R&D, MGIT
January 1, 2013 - May 1, 2017Backend services & web dashboards for ML research data pipelines using Python and early .NET REST APIs; built React/Angular dashboards for model monitoring and dataset management; implemented CI/CD with Docker and automated deployments.
Education
Master of Science in Computer Science at University of Missouri-Kansas City (UMKC)
January 11, 2030 - April 18, 2026Bachelor of Technology in Mechatronics Engineering at Jawaharlal Nehru Technological University (JNTU)
January 11, 2030 - April 18, 2026Master of Science in Computer Science at University of Missouri-Kansas City (UMKC)
January 11, 2030 - April 21, 2026Bachelor of Technology in Mechatronics Engineering at Jawaharlal Nehru Technological University (JNTU)
January 11, 2030 - April 21, 2026Master of Science in Computer Science at University of Missouri-Kansas City (UMKC)
January 11, 2030 - May 13, 2026Bachelor of Technology in Mechatronics Engineering at Jawaharlal Nehru Technological University (JNTU)
January 11, 2030 - May 13, 2026Master of Science in Computer Science at University of Missouri-Kansas City (UMKC)
January 11, 2030 - May 27, 2026Bachelor of Technology in Mechatronics Engineering at Jawaharlal Nehru Technological University (JNTU)
January 11, 2030 - May 27, 2026Qualifications
AWS Certified: Machine Learning - Specialty
January 1, 2020 - April 18, 2026AWS Certified: DevOps Engineer - Professional
January 1, 2019 - April 18, 2026AWS Certified: Developer - Associate
January 1, 2019 - April 18, 2026AWS Certified: Machine Learning - Specialty
January 1, 2020 - April 21, 2026AWS Certified: DevOps Engineer - Professional
January 1, 2019 - April 21, 2026AWS Certified: Developer - Associate
January 1, 2019 - April 21, 2026AWS Certified: Machine Learning - Specialty
January 1, 2020 - May 13, 2026AWS Certified: DevOps Engineer - Professional
January 1, 2019 - May 13, 2026AWS Certified: Developer - Associate
January 1, 2019 - May 13, 2026AWS Certified: Developer - Associate
January 1, 2019 - May 27, 2026AWS Certified: DevOps Engineer - Professional
January 1, 2019 - May 27, 2026AWS Certified: Machine Learning - Specialty
January 1, 2020 - May 27, 2026Industry Experience
Software & Internet, Professional Services, Media & Entertainment, Financial Services, Telecommunications, Computers & Electronics
Skills
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