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

Quick Facts

• Role: Senior Full-Stack Engineer (Python & Next.js) for Data Integration

• Team focus: Data Team / investment reference data management

Description

Senior Full-Stack Engineer role supporting the Data Team to bring entity, portfolio, and security reference data closer to the investment lifecycle. You will design and build full-stack applications for onboarding, enrichment, validation, approval, reconciliation, and downstream distribution of reference data.

Responsibilities

• Design, develop, and maintain full-stack applications for 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 across 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 on 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 enable efficient data access and processing
• Implement data transformation, validation, and synchronization processes across systems
• Lead refactoring and redesign initiatives 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 containerized applications deployed using Ubuntu-based images
• Strong commitment to test automation (unit and integration testing)
• Experience working in agile teams on complex, high-stakes applications
• Collaborative mindset with code reviews and peer learning
• Comfort working with globally distributed teams
• Familiarity with Atlassian tools (Jira, Confluence, etc.)
• English proficiency at B2 level or higher

Benefits

• Hybrid-by-design mode with opportunity to work remotely within Poland; chance to work abroad for up to 60 days annually
• Business-driven relocation opportunities
• Career development programs; mentoring and soft skills/well-being programs
• Certifications (Anthropic, Gemini, GCP, Azure, AWS) and English classes
• Stable pay; Employee Stock Purchase Plan with a 15% discount
• Benefits package (health insurance, Multisport, shopping vouchers)
• Referral bonuses up to $2,000
• Offices with entertainment and relaxation zones, free snacks, and coffee
• Corporate, social, and well-being events
• B2B contractor work is also possible (terms agreed individually)