Senior Full Stack Engineer

Join Ciklum as a Senior Full Stack Engineer to work full‑time in Poland. Ciklum is a custom product engineering company that supports multinational organizations and scaling startups, with a global team of over 4,000 highly skilled developers, consultants, analysts and product owners.

As a Senior Full Stack Engineer you will become part of a cross‑functional development team building a brand‑new platform from the ground up—starting with a web portal and expanding into mobile development. This is a hands‑on, code‑focused role where you will contribute across backend and mobile deployment, collaborate on technical decisions, and focus on delivering high‑quality, end‑to‑end features.

Responsibilities

• Build a new platform from scratch, ensuring scalability, performance, and maintainability
• Develop and maintain backend services using Java with Spring Framework
• Design and manage relational databases for robust data modeling
• Collaborate with designers to translate wireframes and mockups into high‑quality code
• Deploy solutions on AWS and manage cloud infrastructure
• Configure and maintain GitHub CI/CD pipelines
• Perform unit testing; experience with integration, end‑to‑end, or performance testing is a plus
• Work closely with design, product, and QA teams to deliver user‑centric solutions

Requirements

• Backend: Java with Spring Framework
• Database: Relational databases (MySQL, PostgreSQL, or similar)
• DevOps: GitHub Actions / CI/CD
• Testing: JUnit, Jest, or similar frameworks
• Version Control: Git / GitHub
• AWS certification or strong cloud architecture expertise
• Familiarity with Scrum methodology
• Prior experience in finance or fintech domains

What’s in it for you?

• Strong community: Work alongside top professionals in a friendly, open‑door environment
• Growth focus: Take on large‑scale projects with a global impact and expand your expertise
• Tailored learning: Boost your skills with internal events, Udemy access, language courses, and company‑paid certifications
• Endless opportunities: Explore diverse domains through internal mobility, finding the best fit to gain hands‑on experience with cutting‑edge technologies
• Flexibility: Enjoy flexibility – full remote working possibilities
• Care: Company‑paid medical insurance, mental health support, and financial & legal consultations

About Ciklum

At Ciklum, we are always exploring innovations, empowering each other to achieve more, and engineering solutions that matter. With our delivery centers in Wrocław and Gdańsk, our 300+ professionals in Poland drive forward‑thinking solutions for global clients. Join a community where collaboration sparks innovation—and your impact reaches millions.

Seniority level: Mid‑Senior level

Employment type: Full‑time

Job function: Engineering and Information Technology

Industries: IT Services and IT Consulting

Interested already? We would love to get to know you! Submit your application. We can’t wait to see you at Ciklum.