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Senior Full-Stack Developer

Sigma Software · Remote, Masovian Voivodeship, Poland

Software DevelopmentSenior LevelRemoteExternal listingfull-timeabout 14 hours ago

About The Role

  • Develop and maintain modern Full Stack web applications with a strong focus on Back-end architecture and scalability
  • Design and implement AI-powered features and intelligent workflows
  • Build and operate reliable, secure, and scalable cloud-native services
  • Collaborate with product managers, UX designers, architects, and engineering teams
  • Participate in architecture discussions and technical decision-making
  • Develop and maintain RESTful APIs and service-to-service communication
  • Implement microservices and event-driven architecture patterns
  • Ensure application reliability, observability, security, and performance
  • Contribute to CI/CD processes and engineering best practices
  • Promote engineering excellence and AI adoption within development teams
  • At least 5+ years of commercial experience in software development 
  • Strong proficiency in JavaScript and TypeScript
  • Hands-on experience with React and Next.js in production environments
  • Strong experience with NestJS and scalable API design
  • Commercial experience with Go OR strong experience with Python ecosystem technologies
  • Experience with FastAPI, SQLAlchemy, pandas, numpy, and related Python tooling
  • Solid understanding of microservices architecture and event-driven systems
  • Experience with PostgreSQL and ORM tools such as Prisma
  • Practical experience with Docker and Kubernetes
  • Experience with NATS.io or similar messaging technologies
  • Experience integrating IAM/SSO solutions such as Keycloak
  • Strong understanding of RESTful APIs and distributed systems
  • Knowledge of application security best practices
  • Experience working with CI/CD pipelines and Git
  • Strong analytical and problem-solving skills
  • Ability to work independently and collaborate effectively in cross-functional teams
  • Upper-Intermediate or higher level of English

WILL BE A PLUS

  • Experience in pharmaceutical, biotech, healthcare, or scientific research domains
  • Experience working with computational or mathematical modeling platforms
  • Familiarity with AI/ML integrations in enterprise applications
  • Experience with regulatory or compliance-driven systems
  • Experience with scientific or analytical data visualization
  • Familiarity with R for research or analytical purposes

PERSONAL PROFILE

  • Proactive and ownership-driven mindset
  • Strong collaboration and communication skills
  • Ability to work effectively in complex technical environments
  • Interest in modern AI technologies and innovation
  • Focus on engineering quality and continuous improvement

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