Fullstack Engineer (Java&Kotlin + JavaScript)
- Level
- Mid
- Work type
- Remote · Poland only
Not stated in the posting: salary, visa.
Open. First seen 22 October 2026.
About the role
thecodest's standard text
🌍 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:
Our client is one of the largest e-commerce platforms in Europe, used by millions of users every day. The company connects sellers - from small businesses to global brands - with customers, offering a vast product selection, fast delivery, and a well-crafted shopping experience.
Developers engaged in this project will operate across the full stack, dynamically shifting between backend and frontend tasks depending on current project requirements.
The role:
- Backend & API Adjustments: Preparing backend mocks, designing, and adjusting APIs on the Java backend side.
- Frontend Development: Developing responsive web components, checkout funnels, and registration pathways using the React framework.
- Integration Support: Adapting systems and endpoints to ensure efficient onboarding and cooperation with external partners.
- Good programming skills in Java (Kotlin) and comfortable working with microservices.
- Solid hands-on frontend experience using HTML, CSS, JavaScript, and modern framework ecosystems.
- Clear understanding of REST API principles, JSON data manipulation, and consuming backend endpoints.
- High context-switching capability; eager to work on both backend enablement and web frontend.
- English level min. B2+
- Availability for the Incident Response service.
Nice to have:
- Familiarity with CI/CD tools (Gitlab CI, Docker) and cloud environments.
- An eye for modern UX/UI standards, accessibility, and Responsive Web Design (RWD).
Recruitment process:
- 30-minute screen with our recruiter, Justyna
- Technical Verification Meetings
- Stakeholder meeting
- Offer
thecodest's standard text
Questions, insights? Feel free to reach out to our recruiting team:
justyna.pazdalska@thecodest.co
In the meantime, feel free to visit our website where you can find key facts about us.
What this role asks for
Particular to this role
GitLab · HTML
Rare in thecodest's other 22 open postings.
Standard for mobile roles
Kotlin
Common in mobile postings at any company.
52% of this description is written for the role. The rest is thecodest's standard text, folded away below.
Compared with thecodest's other open jobs.
The team: Development HIRES STEADILY
This role is one of 21 open in Development. 4 were posted in the last 30 days and the oldest in May: a team that hires all year rather than one being built.
WHAT THE TEAM WORKS WITH, ACROSS ITS POSTINGS
CI/CD (14 of 21), Python (10 of 21), REST (10 of 21), Java (9 of 21), JavaScript (8 of 21), React (8 of 21), AWS (7 of 21)
OTHER ROLES ON THIS TEAM
- Senior QA Automation Engineer posted Oct 22
- Senior Backend Engineer (Python) - Full-Stack Mindset posted Oct 21
- Data Engineer w/ Databricks posted Oct 13
- Solution&Fullstack Engineer (Python+ JS) - AI First posted Oct 12
- Android Developer posted Sep 18
- Software Engineer (Kotlin&Java) posted Sep 10
- Fullstack Engineer (Java&Kotlin + JavaScript) posted Sep 10
- Mid Vue.js Developer posted Sep 9
- Senior Data Engineer posted Aug 24
- Senior Fullstack Engineer (Java&Kotlin + JavaScript) posted Aug 20
- Senior Fullstack Engineer (Python+React) posted Aug 18
- iOS Developer posted Aug 11
- Senior Fullstack Engineer (Angular+Node.js) posted Jul 31
- Senior Data Scientist posted Jul 27
- Devops Engineer posted Jul 20
- Senior Software Engineer (Python&GIS) posted Jul 7
- Senior Python Developer posted May 26
- Senior Platform Engineer posted May 26
- Senior React Developer posted May 18
- Java Developer posted May 18
From the team and dates on thecodest's own job board.
Other openings for this role
2 open postings for this role in Remote - Poland, first posted 22 October 2026. The company is likely hiring for more than one position. None has been taken down and posted again.
- 22 October 2026 – open (this posting)
- 22 October 2026 – open
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