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Hi, I’m Jaroslaw Kaminski, a results-driven backend architect and software engineer with extensive experience building scalable RESTful APIs and backend systems for fintech, geospatial analytics, enterprise software, and e-commerce. I specialize in Node.js and TypeScript, with strong roots in PostgreSQL, MongoDB, and Redis, delivering high-performance, secure data handling and efficient database designs that integrate smoothly with frontend teams. In cross-functional, Agile environments I drive robust architecture, implement secure auth and validation, and optimize CI/CD pipelines and cloud infrastructure (AWS/GCP). I continuously explore AI-enabled tech and geospatial tooling to push product capabilities while maintaining reliability under heavy load and evolving requirements.…Hi, I’m Jaroslaw Kaminski, a results-driven backend architect and software engineer with extensive experience building scalable RESTful APIs and backend systems for fintech, geospatial analytics, enterprise software, and e-commerce. I specialize in Node.js and TypeScript, with strong roots in PostgreSQL, MongoDB, and Redis, delivering high-performance, secure data handling and efficient database designs that integrate smoothly with frontend teams. In cross-functional, Agile environments I drive robust architecture, implement secure auth and validation, and optimize CI/CD pipelines and cloud infrastructure (AWS/GCP). I continuously explore AI-enabled tech and geospatial tooling to push product capabilities while maintaining reliability under heavy load and evolving requirements.

Jaroslaw Kaminski

Back-End Developer, Full Stack Developer, Web Developer, +2

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Hi, I’m Jaroslaw Kaminski, a results-driven backend architect and software engineer with extensive experience building scalable RESTful APIs and backend systems for fintech, geospatial analytics, enterprise software, and e-commerce. I specialize in Node.js and TypeScript, with strong roots in PostgreSQL, MongoDB, and Redis, delivering high-performance, secure data handling and efficient database designs that integrate smoothly with frontend teams. In cross-functional, Agile environments I drive robust architecture, implement secure auth and validation, and optimize CI/CD pipelines and cloud infrastructure (AWS/GCP). I continuously explore AI-enabled tech and geospatial tooling to push product capabilities while maintaining reliability under heavy load and evolving requirements.…Hi, I’m Jaroslaw Kaminski, a results-driven backend architect and software engineer with extensive experience building scalable RESTful APIs and backend systems for fintech, geospatial analytics, enterprise software, and e-commerce. I specialize in Node.js and TypeScript, with strong roots in PostgreSQL, MongoDB, and Redis, delivering high-performance, secure data handling and efficient database designs that integrate smoothly with frontend teams. In cross-functional, Agile environments I drive robust architecture, implement secure auth and validation, and optimize CI/CD pipelines and cloud infrastructure (AWS/GCP). I continuously explore AI-enabled tech and geospatial tooling to push product capabilities while maintaining reliability under heavy load and evolving requirements.

Available to hire

Hi, I’m Jaroslaw Kaminski, a results-driven backend architect and software engineer with extensive experience building scalable RESTful APIs and backend systems for fintech, geospatial analytics, enterprise software, and e-commerce. I specialize in Node.js and TypeScript, with strong roots in PostgreSQL, MongoDB, and Redis, delivering high-performance, secure data handling and efficient database designs that integrate smoothly with frontend teams.

In cross-functional, Agile environments I drive robust architecture, implement secure auth and validation, and optimize CI/CD pipelines and cloud infrastructure (AWS/GCP). I continuously explore AI-enabled tech and geospatial tooling to push product capabilities while maintaining reliability under heavy load and evolving requirements.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

Aragonese

Intermediate

Work Experience

Software Architect Consultant at IG&H

January 1, 2025 - Present

Developed and maintained high-performance RESTful APIs using Node.js and Express.js for scalable fintech applications, focusing on secure data handling and optimized database interactions with PostgreSQL and Redis. Designed efficient database schemas and implemented complex data models in MongoDB and PostgreSQL to support high-throughput transactions and ensure data integrity across services and environments. Implemented authentication, authorization, and input validation mechanisms to secure API endpoints and comply with industry security standards, collaborating with frontend teams for seamless integration. Built and maintained background job pipelines using Redis and asynchronous task queues to handle high-load operations. Configured and optimized AWS infrastructure and CI/CD pipelines to automate deployment, monitor system performance, and ensure reliable delivery across environments. Participated in Agile ceremonies and code reviews to ensure quality and alignment with project goa

AI Software Engineer at TerraEye

April 1, 2024 - December 1, 2024

Developed scalable Node.js backend services for geospatial AI applications, processing satellite imagery and sensor data using Python, TensorFlow, and OpenCV. Designed and implemented RESTful APIs to serve processed geospatial data, with secure authentication and role-based access control. Optimized MongoDB and PostgreSQL structures for large geospatial datasets; implemented Redis caching and asynchronous processing to support real-time analytics. Built CI/CD pipelines using Docker and Kubernetes for scalable deployment. Collaborated with frontend teams to enable interactive geospatial visualizations. Applied system architecture principles and Agile/Scrum practices; explored new AI/backend technologies to improve workflows.

Senior Software Engineer at SAP Polska Sp. z o.o.

March 1, 2022 - April 1, 2024

Built and maintained Node.js microservices and RESTful APIs for enterprise software platforms, integrating PostgreSQL and Redis for high-performance data access. Implemented TypeScript across backend services to improve code quality and maintainability. Optimized database queries and scalable schemas; implemented secure authentication and authorization. Developed and deployed containerized services with Docker and Kubernetes; supported CI/CD pipelines. Integrated background job processing for batch operations and asynchronous workflows to handle high load. Collaborated in Agile/Scrum with cross-functional teams for API design and reviews, ensuring backend scalability and reliability.

Software Engineer at PetLab Co.

February 1, 2020 - March 1, 2022

Developed and maintained Node.js backend services for e-commerce applications, implementing RESTful APIs and PostgreSQL schemas for product, order, and inventory management. Implemented secure authentication and authorization, and integrated Redis caching to improve performance under high traffic while ensuring data consistency. Configured Docker containers and automated deployment pipelines in cloud environments, supporting CI/CD. Worked in Agile/Scrum to deliver backend features and collaborate with frontend teams.

Backend Engineer at Ailleron

October 1, 2016 - February 1, 2020

Developed Node.js and Express.js backend systems for fintech applications, implementing RESTful APIs and secure PostgreSQL operations. Designed and optimized database schemas; implemented authentication, authorization, and data validation workflows to ensure reliable and secure transactions. Integrated Redis caching and asynchronous background jobs for high-performance banking operations. Worked with containerized deployments using Docker and Kubernetes, supporting CI/CD pipelines and cloud-based delivery to ensure reliable production environment management and system scalability.