Senior Fullstack Developer

🌍 Hello World! We are The Codest - International Tech Software Company with tech hubs in Poland delivering global IT solutions and projects. Our core values lie in “Customers and People First” approach that prioritises the needs of our customers and a collaborative environment for our employees, enabling us to deliver exceptional products and services. Our expertise centers on web development, cloud engineering, DevOps and quality. After many years of developing our own product - Yieldbird, which was honored as a laureate of the prestigious Top25 Deloitte awards, we arrived at our mission: to help tech companies build impactful product and scale their IT teams through boosting IT delivery performance. Through our extensive experience with product development challenges, we have become experts in building digital products and scaling IT teams. But our journey does not end here - we want to continue our growth. If you’re goal-driven and looking for new opportunities, join our team! What awaits you is an enriching and collaborative environment that fosters your growth at every step. 💡 Project Description: In this project, you will develop and enhance a secure, multi-tenant SaaS platform for managing sensitive HR and identity-related data, with a strong focus on access control, auditability, and data governance. Deliver end-to-end features across backend services and web applications, covering REST API development, business logic implementation, database design, frontend functionality, automated testing, and API documentation. 🔑 Key Requirements: 5+ years building production web applications in any modern language (PHP, TypeScript/ Node.js , Python or similar). Solid REST API design instincts: resources, idempotency, versioning, error contracts. Relational database fluency — schema design, query analysis, migrations. Disciplined testing — unit and integration; you know what to mock and what not to. Git fluency: branching, pull requests, rebases, conflict resolution. Experience using AI coding assistants and agent-based workflows in real engineering work. Strong communicative English — for meetings, code comments, PR descriptions, OpenAPI text. ➕Nice to have: PHP 8.x with Symfony and Doctrine ORM — directly applicable to today's stack. Node.js / TypeScript with a mature backend framework (Nest, Fastify, Express + Zod, etc.) — directly applicable to the possible evolution path Multi-tenant SaaS architecture (row-level isolation, tenant-scoped queries). ● IPFS or other content-addressable storage concepts. JWT auth flows with refresh-token rotation. OWASP Top-10 awareness. 📜Our Promise (what you can expect from us): 20-25k PLN on B2B 100% remote work (but we have offices in Krakow and Warsaw and we’re happy to meet there from time to time 😉) 300 PLN to use on our benefits platform, Worksmile - gift cards, medical services, sports, etc. Our B2B contract contains provisions that allow you to obtain IP BOX support Integration events, education opportunities and much more… A unique opportunity to take your career to the next level - we’re looking for people who want to create an impact. You have ideas, we want to hear them! 📌Recruitment process: 30 minute screening call online with our recruiter 1h technical call with CTO 1h call with CEO Offer Questions, insights? Feel free to reach out to our recruiting team: ewa.szczodrak@thecodest.co In the meantime, feel free to visit our website where you can find key facts about us.