Full Stack Developer / Contract / Poland

We are seeking a highly skilled Full Stack Developer with strong experience in TypeScript and modern AWS services. This role involves building scalable APIs and data pipelines using serverless and event‑driven architectures. The ideal candidate will have hands‑on experience with EventBridge, API Gateway, Lambda, Step Functions, and S3. Experience working in a SAFe Agile environment is highly desirable. Approximately 20% of the role involves Java or Python development to support existing services.

Job details:

• • Role:Full Stack Developer 
  • Full-time
  • remote
  • Start date: 25/03/2026
  • End date: 31/12/2026

Scope:

• • Design, develop, and maintain APIs using TypeScript (Node.js) and serverless patterns.
  • Build and manage data ingestion pipelines using AWS Lambda, S3, SQL databases (PostgreSQL), and Step Functions.
  • Collaborate with DevOps to manage deployments using AWS CDK and CI/CD tools (GitHub Actions/Bamboo).
  • Implement infrastructure as code using AWS CDK and manage deployments via CI/CD tools (GitHub Actions/Bamboo).
  • Use AWS SDKs to integrate with AWS services in application code.
  • Develop and maintain Java services where required , Python is a plus.
  • Work with NoSQL databases (DynamoDB/MongoDB) and SQL databases.
  • Ensure robust error handling and validation in data pipelines via Lambda and Step Functions.
  • Document APIs via OpenAPI/Swagger for seamless front‑end/back‑end integration.
  • Implement secure authentication and authorization using Auth0 (or similar).
  • Participate in SAFe Agile ceremonies (PI Planning, Sprint Planning, Daily Stand‑ups, Retrospectives).
  • Collaborate cross‑functionally with Product Owners, Scrum Masters, and other team members.

Skills:

• Proven experience as a Full Stack Developer or similar role.
• Strong proficiency in TypeScript (Node.js).
• Hands‑on experience with AWS services: Lambda, S3, Step Functions, EventBridge, DynamoDB, API Gateway, and CDK.
• Experience with CI/CD tools like GitHub Actions or Bamboo.
• Strong SQL skills and experience with relational databases.
• Experience with NoSQL databases.
• Ability to develop and maintain Java services; Python is a plus.
• Understanding of data validation, error handling, and pipeline orchestration.
• Familiarity with authentication/authorization frameworks (Auth0/Azure AD/Ping).
• Strong problem‑solving skills and attention to detail.
• Excellent communication and collaboration skills.
• Experience working in a SAFe Agile environment and understanding Lean‑Agile principles.
• Extensive knowledge of architectural best practices & fast-paced delivery mindset: value-driven, pragmatic, result oriented

SNI sp. z o.o. will process personal data for the purpose of the recruitment process in accordance with Data Privacy Policy. The data may also be stored and processed for future recruitment purposes, in accordance with the given consent.