Poland only🟢 At Dev.Pro, we work on projects that impact millions of people around the world — but we know it’s the people behind the tech who make it all happen. We truly value what makes each person unique and are building a workplace that’s inclusive, friendly, and supportive.
We invite a Senior Software Engineer to join our team and help develop new components within a large-scale fintech data platform in the private markets domain. In this role, you’ll lead a team focused on integrating platform components with blockchain layers, working across a complex, multi-system environment.
🟩 What's in it for you:
- Work on a new component within an established fintech platform with 20+ internal services and 15+ external integrations
- Work with blockchain systems and smart contract integrations in real-world applications
- Lead technical decisions and guide a team of engineers in building complex systems end-to-end
✅ Is that you?
- 5+ years of backend development experience, with Python as the primary language
- Strong software engineering background in Node.js with TypeScript, with ability and motivation to work deeply in Python services
- Proven experience building production AI/LLM applications, including multi-agent workflows and orchestration patterns
- Strong understanding of AI framework selection and practical trade-offs (LangGraph and related ecosystem tools are a strong advantage)
- Experience developing and operating microservices with multiple internal and external integrations
- Strong experience with Kubernetes and containerized deployments (Docker)
- Experience with Infrastructure as Code (Terraform or equivalent)
- Experience with event-driven architectures, preferably including event sourcing patterns
- Strong experience with PostgreSQL and practical knowledge of Redis, MongoDB, and Weaviate
- Solid understanding of software architecture and system design in distributed environments
- Strong focus on clean, maintainable code and automated testing
- Experience producing technical documentation, including C4 and UML artifacts
- Experience as a Technical/Team Lead with end-to-end ownership of delivery and technical decisions
- Hands-on expertise with AI software development tools (for example Cursor and Claude Code), including ability to guide team adoption and maintain quality at high delivery speed
- Strong communication, cross-functional collaboration, and stakeholder alignment skills
- Strong analytical thinking, problem-solving skills, and ability to work in fast-changing environments with high ambiguity
Desirable:
- Experience with LangChain, MCP tooling, and integration-oriented agent architecture
- Familiarity with RAG patterns and modern vector database solutions
- Experience designing AI agents for data validation, enrichment, surveillance, and workflow automation
- Experience with AWS and Azure, and practical cloud-agnostic architecture design
- Experience designing solutions that can be deployed in private cloud environments
- Background in fintech, data platforms, or private markets domains
- Understanding of blockchain fundamentals (L1/L2 concepts) to support cross-team integration via abstraction layers (MCP/REST APIs) rather than direct chain development
🧩Key responsibilities and your contribution
In this role, you’ll lead a team building integrations across platform components and blockchain layers.
- Lead design and development of backend services and integrations across platform components
- Drive integration efforts between platform components and blockchain layers
- Collaborate closely with cross-functional teams to define and deliver solutions
- Guide the team on implementation, quality, and engineering best practices
- Ensure alignment across services in a highly integrated environment
- Contribute to system design, technical documentation, and diagrams
- Ensure code quality and reliability through testing and continuous improvements
- Troubleshoot and resolve issues across distributed systems and integrations
🎾 What's working at Dev.Pro like?
✔️ 30 paid days off per year — take them whenever you want for vacation, holidays, or personal time
✔️ 5 paid sick days, up to 60 days of medical leave, and 6 paid days off per year for major family events like weddings, funerals, or the birth of a child
✔️ Partially covered health insurance after the probation, plus a wellness bonus for gym memberships, sports nutrition, and similar needs after 6 months
✔️ Grow your skills with English lessons, online training, conferences, and the option to explore new career paths
Our next steps:
✅ Submit a CV in English — ✅ Intro call with a Recruiter — ✅ Interview — ✅ Offer
United States
AM, PL + 2 more
Portugal only
Bulgaria only
Brazil only