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Posted 2mo ago

Senior Fullstack Developer (NestJS/ React.js)

@ Symphony Solutions
Poland or Europe
RemoteFull Time
Responsibilities:Build backend, Design APIs, Improve performance
Requirements Summary:5+ years software development; 3+ years React frontend; 3+ years Node.js/TypeScript backend; NestJS experience; Prisma/PostgreSQL; JWT/RBAC; REST/microservices; AWS; Docker; testing; strong English; AI tooling proficiency.
Technical Tools Mentioned:React, NestJS, TypeScript, Prisma, PostgreSQL, JWT, RBAC, Docker, Docker Compose, GitHub Actions, Jest, Vitest, Supertest, AWS, Redis, Terraform, Elasticsearch, CI/CD
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Job Description

The company is a provider-side iGaming observability and revenue intelligence platform that sits between game providers and their operator distribution network. The platform ingests round-event data in real time, independently computes Gross Gaming Revenue (GGR), and continuously reconciles operator-reported settlements to detect revenue leakage — a problem that costs game providers millions annually in undetected FX errors, revenue-share miscalculations, and bonus misclassifications.