Senior Full Stack Engineer (Python & Next.js) with Data Integration

We are seeking a Senior Full Stack Engineer to support the Data Team, which aligns with Investment Systems Engineering to bring entity, portfolio, and security reference data closer to the investment lifecycle.

Responsibilities

• Design, develop, and maintain full-stack applications supporting reference data management and investment-related workflows
• Build robust backend services, APIs, and data-processing components
• Develop intuitive, responsive frontend interfaces for data management, validation, search, review, and operational workflows
• Deliver data integration solutions supporting the management and distribution of entity, portfolio, and security reference data
• Establish reliable data relationships between investment entities, funds, portfolios, securities, issuers, counterparties, and related financial instruments
• Support workflows such as reference data onboarding, enrichment, validation, approval, reconciliation, and downstream distribution
• Collaborate with investment and operations stakeholders to understand how reference data supports the investment lifecycle
• Design and implement RESTful APIs and, where appropriate, event-driven integrations
• Integrate reference data services with internal investment platforms, data warehouses, and enterprise applications
• Work with relational databases and data services to support efficient data access and processing
• Implement data transformation, validation, and synchronization processes across systems
• Lead refactoring and redesign initiatives, architecting for resiliency, compliance, and auditability

Requirements

• 7+ years of experience with Python, FastAPI, Next.js, React, TypeScript, SQL, and Docker
• Experience designing and implementing RESTful APIs and event-driven integrations using Kafka
• Knowledge of SQL and relational databases, preferably PostgreSQL, Microsoft SQL Server, or equivalent
• Experience with data modeling, data validation, and integration patterns
• Experience with data integration, ETL/ELT, and Python data pipelines
• Working experience with Kubernetes clusters and applications deployed as containers using Ubuntu-based images
• Strong commitment to test automation, including robust unit and manual integration testing
• Experience working in agile teams on complex, high-stakes applications
• Collaborative mindset, with a commitment to code reviews and peer learning
• Comfortable working with teams across the globe
• Familiarity with Atlassian tools (Jira, Confluence, etc.)
• System design expertise across microservices, database modeling, and API design
• English proficiency at B2 level or higher

Nice to have

• Experience with GitHub Actions, Jira–GitHub integrations, and DevOps best practices
• Prior exposure to financial services or capital market domains

Benefits

We gather like-minded people:

• Top tech minds driving innovation in AI, cloud and digital platform modernization
• Supportive team and agile, startup-like culture
• Hybrid by design mode and opportunity to work remotely within Poland
• Chance to work abroad for up to 60 days annually
• Business-driven relocation opportunities

We provide growth opportunities:

• Career development programs
• Thought leadership, mentoring, soft skills and well-being programs
• Certification (Anthropic, Gemini, GCP, Azure, AWS)
• English classes

We cover it all:

• Stable pay
• Participation in the Employee Stock Purchase Plan with a 15% discount
• Benefits package (health insurance, multisport, shopping vouchers)
• Referral bonuses up to $2,000
• Offices featuring entertainment and relaxation zones, table tennis and football, free snacks, coffee and more
• Corporate, social and well-being events

Please, note:

• Benefits listed above are available to employees only
• We are open for working with Contractors. Terms of B2B cooperation agreements are agreed individually
• We will reach out to selected candidates exclusively