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Junior Java Backend Engineer for AI-Powered Platforms
Build backend services for AI-powered content experiences using Java 21, Spring Boot, Kafka, and PostgreSQL in a fast-paced Warsaw startup.
Java Developer
Build and maintain scalable Spring Boot microservices and REST APIs for a telecom client, using AWS, Kubernetes, and event-driven patterns while owning end-to-end DevOps and testing.
Java Developer
Build enterprise Java backends with Spring Boot, REST APIs, and microservices; write SQL, optimize queries, and integrate Kafka while ensuring security and test coverage.
Java Developer
Develops secure identity solutions in Java/Spring Boot, building REST APIs and cloud-native services for biometric and cryptographic systems.
Java Developer
Builds and improves backend services for mobile apps using Java, Spring, and REST, focusing on clean code and product quality.
Java Developer
Builds and refactors Java-based systems using microservices and DDD, focusing on distributed architecture, automated testing, and modern tooling like Kafka and Kubernetes.
Analytics Data Engineer - App Store
Build and maintain large-scale data pipelines and products for the App Store, processing petabytes daily to generate insights while ensuring privacy and correctness.
Senior Java Backend Engineer – Spring Boot & API Expert
Design and implement backend services in Java/Spring Boot, build RESTful APIs, optimize SQL queries, and support CI/CD pipelines for a backend team in Poland.
Senior Java Backend Engineer for Banking Systems
Build and maintain scalable Java backend services for a banking programme using Spring, Kafka, and distributed systems.
AI Full Stack Software Developer
Build AI-powered internal tools and scalable RAG/LLM systems for a trading firm, integrating Python, Go/Rust, and modern web stacks to enhance productivity across teams.
Senior Software Engineer, AI Products
Build and ship AI-driven features and LLM-based automation tools using Python, vector DBs, and RAG pipelines on AWS/GCP.
Backend Developer @ Respect Energy Fuels Sp zo.o.
Build and maintain backend services in NestJS (TypeScript) that power energy-trading workflows: billing engines, tariffing, invoicing, legacy integrations, and reporting pipelines.
Senior Data Engineer, Financial Data
Build and maintain scalable ETL/ELT pipelines and data warehouses to track USDC movement across blockchains, enabling analytics on holdings, use cases, and growth opportunities.
Staff Data Engineer (Data Systems, TCGplayer)
Staff Data Engineer builds and governs scalable data systems (Snowflake, Postgres, Kafka) to power TCGplayer’s marketplace, ensuring reliable, secure, and well-tested data flows across warehouse and application platforms.
Principal Software Developer – Data Architect
Lead the architecture of an AI-ready enterprise data platform for a global fintech company, defining standards, modeling patterns, and governance to power analytics and secure customer integrations.
Senior Backend Developer (C# or Node.js) @ Antal
Design and build scalable backend services and APIs for IoT platforms using C#/.NET or Node.js/TypeScript in a cloud-native environment.
Backend PHP Developer
Backend PHP developer building and maintaining an e-commerce platform using Symfony, REST APIs, and relational databases in a relaxed, game-focused team.
Node.js Backend Developer
Builds and maintains a Node.js-based financial document processor that uses AI agents to extract and validate supplier data via REST APIs and Azure services.
Senior Pyton Backend Developer (Contract, Remote)
Build and scale Python microservices with FastAPI/Django, PostgreSQL, and AWS, integrating APIs and automating CI/CD pipelines for high-impact client projects.
Formamind Senior Backend Developer
Builds and maintains scalable Django/Python backend services, designs REST/GraphQL APIs, and leads architecture decisions for microservices while mentoring junior developers.