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Senior Backend Developer F M

Warszawa, mazowieckie🌐 Remote💼 Full-time💰 $364,000–$364,000🗓 2026-06-18 → 2026-08-09

Core

Building high-performance, secure, and reliable backend systems for millions of clients using Specification Driven Development within a full SDLC.

Role type

Senior Backend Developer (Java/Spring)

Builds

Backend systems for a financial services client

Domain

Financial services / Payments

Deliverable

production ML models | product features

Required skills

Java, Spring Framework, Spring Boot, Microservices architecture, Oracle, PostgreSQL, Legacy code modernization, Payment domain knowledge

Preferred skills

Banking sector experience

Technologies

Java, Spring Framework, Spring Boot, Oracle, PostgreSQL

Responsibilities

Design and modify databases, Develop code changes, Write unit and integration tests, Review code for architectural compliance, Prepare deployments, Optimize database performance

Seniority

Senior, hands-on IC

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