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

Quick Facts

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

Description

Senior Full Stack Engineer to support the Data Team and bring entity, portfolio, and security reference data closer to the investment lifecycle. You will design and build full-stack applications for reference data management, develop backend APIs and data-processing services, and implement data integration solutions and reliable relationships between investment entities. You will also refactor and redesign systems for resiliency, compliance, and auditability.

Responsibilities

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

Requirements

• 7+ years of experience with Python, FastAPI, Next.js, React, TypeScript, SQL, and Docker
• Experience with RESTful API and event-driven integration using Kafka
• Strong knowledge of SQL and relational databases (preferably PostgreSQL or Microsoft SQL Server)
• Experience with data modeling, data validation, and integration patterns
• Experience with data integration and ETL/ELT via Python data pipelines
• Experience with Kubernetes and containerized deployments using Ubuntu-based images
• Strong test automation practices (unit and manual integration testing)
• Experience working in agile teams on complex, high-stakes applications
• Collaborative mindset with commitment to code reviews and peer learning
• Ability to work 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

Benefits

• Hybrid-by-design with opportunity to work remotely within Poland
• Chance to work abroad for up to 60 days annually
• Career development programs and mentoring
• Certification support (Anthropic, Gemini, GCP, Azure, AWS)
• English classes
• Stable pay and Employee Stock Purchase Plan (15% discount)
• Health insurance, multisport, shopping vouchers
• Referral bonuses up to $2,000
• Corporate, social, and well-being events; office amenities like snacks, coffee, and entertainment zones
• Contractor and B2B cooperation possible (terms agreed individually)