Available to hire
Hi, I’m Jakub Gawron—a Senior Full-Stack Engineer with 10+ years of global experience delivering scalable, secure, cloud-native applications using Python, Node.js, and React. I enjoy turning complex problems into robust, maintainable software and collaborating with cross-functional teams to ship value quickly.
I specialize in microservices, AI integration, and performance optimization across healthcare, sustainability, and fintech domains. I lead with clean architecture, CI/CD automation, and Agile practices to drive innovation and high-quality outcomes.
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
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Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Language
English
Fluent
Polish
Advanced
Work Experience
Senior Fullstack Engineer at HealthTech
June 1, 2025 - August 26, 2025Designed and implemented scalable microservices using Java (Spring Boot, Micronaut), Kotlin (Ktor, Coroutines, Exposed ORM), and Python (FastAPI) for secure healthcare applications. Built responsive web interfaces with Angular, React, Next, and TailwindCSS to enhance user engagement. Optimized database performance in PostgreSQL, MySQL, and DynamoDB using Hibernate and JPA, reducing query times by 40%. Led migration from monolithic to microservices architecture utilizing Docker, Kubernetes, and Kafka resulting in a 20% reduction in outages. Implemented OAuth 2.0, JWT authentication, and RBAC ensuring HIPAA compliance. Automated CI/CD pipelines with GitHub Actions, Terraform, and Kubernetes, improving release frequency by 30%. Achieved over 90% test coverage via unit and integration testing (Pytest, JUnit 5, Mockito). Collaborated with DevOps on cloud infrastructure optimizations deploying serverless microservices on AWS. Facilitated Agile practices and led sprint planning and code revie
Senior Fullstack Engineer at Bluemvmt
September 1, 2023 - August 26, 2025Developed Microservices backend with Spring Boot and FastAPI for managing ESG cases and sustainability documentation. Built backend services and data pipelines using Java and Kafka to improve auditing and retrieval performance. Created dynamic frontend interfaces using Vite, TypeScript, TailwindCSS, Angular with NgRx, React, and React Query. Visualized large datasets with AG-Grid, Angular Material, and Ant Design. Developed RESTful and GraphQL APIs integrating AI-driven document tagging and classification. Led automated testing and CI/CD with GitHub Copilot, Spring Boot Test, and Pytest, embedding quality gates into GitHub Actions workflows. Integrated Single Sign-On with Okta across multiple tools. Optimized API endpoints by refining SQLAlchemy, Hibernate, and JPA configurations and middleware logic. Fostered collaborative culture emphasizing shared ownership and technical design reviews.
Mid Fullstack Engineer at Industry 4.0 Solutions
October 1, 2021 - August 26, 2025Designed and optimized high-performance applications for retail, iGaming, and real estate serving millions of daily active users. Architected and improved microservices using Java (Spring MVC) and Python (Django, Flask), reducing API response times by 50% and increasing data throughput by 35%. Developed performant database architectures with MySQL and PostgreSQL, employing sharding and index optimization. Built event-driven systems using Kafka, RabbitMQ, and WebSockets for real-time features. Integrated third-party services including payments, authentication, and analytics. Enhanced frontend performance via lazy loading, code splitting, and bundle analysis. Implemented micro frontends using Angular, React, and Storybook, improving UI modularity and maintainability. Participated actively in code reviews and knowledge sharing in an Agile environment.
Junior Fullstack Engineer at Instinctools
November 1, 2016 - August 26, 2025Contributed to full-stack projects serving startups and enterprises across diverse industries. Built interactive web interfaces with React, AngularJS, and vanilla JavaScript, improving enterprise dashboard usability by 25%. Developed backend logic in Java and refactored Python Django backend for business features and third-party integrations. Implemented real-time communication via WebSockets for chat and live updates. Designed relational schemas and crafted complex PostgreSQL queries for robust data-driven features. Collaborated closely with senior engineers, designers, and clients enhancing communication and consulting skills.
Senior Fullstack Engineer at HealthTech
June 1, 2025 - September 4, 2025Designed and implemented scalable microservices using Python and Node.js for secure healthcare applications. Built intuitive user interfaces with React and Next.js enhancing patient engagement. Optimized databases in PostgreSQL, MySQL, and DynamoDB, reducing query times by 40%. Improved backend asynchronous processing with Redis caching and task queues. Developed an AI assistant with LLMs to aid patients and clinicians. Led migration to microservices architecture using Docker, Kubernetes, and Kafka cutting outages by 20%. Enforced OAuth 2.0, JWT authentication, and RBAC for HIPAA compliance. Automated CI/CD pipelines for zero-downtime deployments, boosting release frequency by 30%. Achieved 90%+ test coverage improving software quality. Collaborated with DevOps for cloud infrastructure optimization on AWS. Facilitated Agile practices, sprint planning and code reviews.
Senior Fullstack Engineer at Bluemvmt
September 1, 2023 - September 4, 2025Designed and developed a FastAPI-based ESG platform from scratch managing sustainability documentation. Built backend services with FastAPI and Node.js using microservices for improved data retrieval. Developed dynamic frontends with React, React Native, and TailwindCSS. Visualized complex datasets using AG-Grid and Ant Design. Built RESTful and GraphQL APIs integrating OpenAI-driven document tagging. Led automated testing and CI/CD with GitHub Copilot, Jest, and Pytest. Integrated Okta SSO across multiple platforms. Optimized SQLAlchemy queries to improve slow API endpoints, resolving critical bugs. Promoted collaborative engineering culture with open communication and technical design reviews.
Mid Fullstack Engineer at Industry 4.0 Solutions
October 1, 2021 - September 4, 2025Developed and optimized high-performance applications supporting millions of users in retail, iGaming, and real estate domains. Architected backend microservices with Python Django and Flask, Node.js, improving response times by 50% and data retrieval by 35%. Designed performant database structures for MySQL and PostgreSQL including sharding. Built event-driven systems with Kafka, RabbitMQ, and WebSockets supporting real-time features. Led integrations with payment, authentication, analytics, and CRM APIs. Enhanced frontend performance using lazy loading, code splitting, and developed micro frontends with React and Storybook. Maintained high code quality with unit, integration, and E2E testing using Pytest, Jest, Mocha, and Cypress. Participated in code reviews and knowledge sharing in agile environments.
Junior Fullstack Engineer at Instinctools
November 1, 2016 - September 4, 2025Contributed to full-stack projects serving diverse clients including startups and enterprises. Built interactive web UIs with React, AngularJS, and vanilla JS improving usability by 25% for enterprise dashboards. Developed backend logic in Node.js and Python Flask implementing core business processes. Implemented real-time communication features with WebSockets enhancing engagement. Designed relational database schemas and complex SQL queries in PostgreSQL. Collaborated closely with senior engineers, designers, and clients, strengthening communication and team collaboration.
Senior Fullstack Engineer at HealthTech
June 1, 2025 - September 22, 2025Designed and implemented scalable microservices using Python (FastAPI, Flask) and Node.js (Express, NestJS) to support high-performance, secure healthcare applications. Built responsive web interfaces with React, Next.js, React Native and Material UI across devices to improve patient and provider engagement. Optimized database performance with PostgreSQL, MySQL, and DynamoDB, and integrated Elasticsearch for near real-time analytics, reducing query times by 40%. Refactored backend for asynchronous processing with Redis caching and task queues (Celery, BullMQ). Developed an AI assistant leveraging LangChain and LangGraph to assist patients and clinicians, automating complex reporting workflows. Migrated from monolithic to microservices using Docker, Kubernetes, and Kafka, improving fault tolerance and reducing outages by 20%. Implemented OAuth 2.0, JWT, and RBAC for HIPAA compliance. Automated CI/CD pipelines with GitHub Actions, Terraform, and Kubernetes for zero-downtime deployments.
Senior Fullstack Engineer at Bluemvmt
September 1, 2023 - September 22, 2025Designed and developed a FastAPI-based ESG platform; Architected backend services and data pipelines using FastAPI and Node.js with microservice principles to improve case auditing and data retrieval performance. Built dynamic frontend with React, React Native, Vite, TypeScript, Tailwind; Managed complex state with React Query and Redux; modernized legacy admin tools with jQuery. Visualized large datasets with AG-Grid and Ant Design. Implemented internal and external RESTful and GraphQL APIs; Integrated OpenAI-driven document tagging and classification modules to automate processing. Led full-stack automated testing and CI/CD using GitHub Copilot, Jest, and Pytest; integrated quality checks into GitHub Actions. Implemented SSO with Okta across Jira, Slack, internal dashboards, and AI tools. Optimized SQLAlchemy queries and middleware; resolved performance and reliability bugs. Implemented scalable search using Elasticsearch for ESG documents, enabling advanced text classification with
Mid Fullstack Engineer at Industry 4.0 Solutions
October 1, 2021 - September 22, 2025Designed and optimized backend microservices in Node.js, achieving a 50% reduction in API response times and a 35% increase in data retrieval speeds through caching and load balancing. Designed performant database architectures for MySQL and MongoDB, optimizing queries and implementing sharding. Architected event-driven systems with Kafka, RabbitMQ, and WebSockets to support real-time features. Led integrations with third-party services—payments, authentication, analytics, and CRM—to enable seamless user experiences and actionable business insights. Optimized frontend performance with lazy loading, code splitting, and bundle analysis; designed micro frontends with React and Storybook. Delivered comprehensive unit, integration, and end-to-end testing with Jest, Mocha, and Cypress. Participated in code reviews and knowledge-sharing to promote best practices in a fast-paced, agile environment.
Junior Fullstack Engineer at Instinctools
November 1, 2016 - September 22, 2025Contributed to full-stack projects for startups and enterprises; Built interactive interfaces with React, AngularJS, and vanilla JavaScript; Improved usability for enterprise dashboards. Developed backend logic with Express; Implemented real-time features via WebSockets and live updates. Designed relational schemas and worked with MongoDB to enable data-driven features. Collaborated with senior engineers, designers, and clients, building strong communication and collaboration skills in a consulting environment.
Senior Fullstack Engineer at HealthTech
June 1, 2025 - September 22, 2025Designed and implemented scalable microservices using Python (FastAPI, Flask) and Node.js (Express, NestJS) to support high-performance, secure healthcare applications. Built responsive web interfaces with React, Next.js, React Native and Material UI; optimized database schemas in PostgreSQL, MySQL, and DynamoDB, with Elasticsearch for near-real-time analytics; migrated from a monolithic system to a microservices architecture using Docker, Kubernetes, and Kafka; implemented OAuth 2.0, JWT, and RBAC to ensure HIPAA-compliant data security; automated CI/CD pipelines with GitHub Actions, Terraform, and Kubernetes, achieving high release frequency and reliability.
Senior Fullstack Engineer at Bluemvmt
September 1, 2023 - September 22, 2025Designed and developed a FastAPI-based ESG platform; built backend data pipelines; created frontend with React/React Native; integrated OpenAI-driven document tagging and classification modules to automate data processing and enhance user workflows; implemented SSO with Okta across Jira, Slack, and internal dashboards; optimized SQLAlchemy queries and middleware for better performance; implemented Elasticsearch-based search for ESG documents; led automated testing and CI/CD initiatives with GitHub Actions.
Mid Fullstack Engineer at Industry 4.0 Solutions
October 1, 2021 - September 22, 2025Architected backend microservices with Node.js; reduced API response times by 50% and improved data retrieval with caching and load balancing. Designed performant MySQL and MongoDB schemas, built event-driven systems with Kafka and RabbitMQ, and implemented WebSockets for real-time features. Led integrations with payments, authentication, analytics, and CRM; modernized frontends with React and Storybook; established comprehensive testing and CI/CD practices.
Junior Fullstack Engineer at Instinctools
November 1, 2016 - September 22, 2025Contributed to full-stack projects for diverse clients, building interactive interfaces with React and AngularJS, and developing backend logic with Node/Express. Implemented real-time features via WebSockets and designed relational and MongoDB schemas to enable data-driven capabilities; collaborated with senior engineers and clients to deliver robust solutions.
Education
Bachelor’s Degree at Warsaw University of Technology
September 1, 2009 - July 1, 2013Bachelor's Degree at Warsaw University of Technology
September 1, 2009 - July 1, 2013Bachelor's Degree at Warsaw University of Technology
September 1, 2009 - July 1, 2013Bachelor's Degree in Computer Science at Warsaw University of Technology
September 1, 2009 - July 1, 2013Qualifications
Industry Experience
Healthcare, Energy & Utilities, Financial Services, Retail, Software & Internet, Real Estate & Construction, Gaming, Professional Services, Other
Skills
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
Intermediate
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