backend developer

apoQlar is looking for a Senior Backend Developer in Poznań or hybrid to enhance the HoloMedicine® platform. Your role will involve designing, building, and operating backend services in C# and Python, focusing on medical imaging and real-time data streaming.Ideal candidates should possess several years of experience in backend services, knowledge of DICOM...

Role Overview: Are you a developer who loves to own the entire lifecycle of an application? We are looking for a Backend Engineer with a strong DevOps mindset to bridge the gap between code and infrastructure for our global Mobile Wallet Platform. Key Responsibilities: Backend development (Java EE) with a focus on automation and deployment . Configuring...

Sii Poland is seeking a Senior .NET Developer to join our in-house agile team. You will deliver long-term C#/.NET backend solutions for industrial systems, focusing on collaboration, CI/CD practices, and integration with communication protocols.This is a remote position based in Poland, where you will work closely with your team to create impactful...

Incubly is seeking a Java Developer to join a Scrum team delivering cloud-based solutions. You will work across the full SDLC, refining features, implementing them, and performing automated testing with production deployments.The role emphasizes Java 21+ backend development, Spring Boot, REST APIs, microservices, and DevOps practices, including Docker and...

An international consulting group is seeking a Senior Back-End Developer for a hybrid role based in Warsaw, Poland. The successful candidate will have over 7 years of experience and will be responsible for designing and maintaining backend systems, mentoring junior developers, and implementing best practices in code quality. A strong background in financial...

LiveChat is searching for an experienced backend developer to work on AI-driven features. This role requires at least 6 years of experience with Node.js and TypeScript, alongside strong knowledge in database ecosystems, real-time communication, and backend architecture. As part of the AI Engines team, you will build scalable systems and collaborate on...

Emporix is seeking a skilled Java Developer to join our team in Poland. You will build secure, scalable backend systems using Java with Spring Boot or Micronaut, design microservices, and deploy on Google Cloud Platform with Kubernetes to deliver high‑performing services.You will collaborate with frontend teams and architects, apply OWASP security...

Veeam Software is seeking a Senior C# Developer to design and build robust backend solutions for handling large data volumes across our SaaS and BaaS platforms. You’ll contribute to Veeam Data Command Center, Service Provider Console and VDC Azure/Entra ID services, taking ownership of key components and influencing architecture.Join a global team,...

ABOUT THE ROLELeoVegas Group is building a world-class Sportsbook platform. Within the Sports domain, we work in a high-volume, real-time environment where speed, correctness, scalability and reliability are critical, building the services that transform incoming sports, trading and pricing data into experiences used by millions of customers.We are looking...

We are looking for a Python Developer to join our team and contribute to the development of web and mobile applications. If you enjoy solving complex problems and building scalable backend solutions, we’d love to hear from you! Responsibilities Developing and maintaining the backend for web and mobile applications Designing and implementing APIs for...

A software house in Poland is seeking a Senior .NET Developer to design and build scalable backend systems using modern .NET technologies. The role focuses on developing high-performance APIs and distributed systems, requiring 5+ years of experience with .NET/C#. You'll have the opportunity to work in a remote-first, flexible environment with a supportive...

Access Softek is seeking a Senior Back End Developer (C#) to join our Banking Platform Team. You will work on core services behind our online banking platform used by hundreds of FI clients, migrating from monolith to microservices and solving high-scale backend challenges. Expect overlap with 2 AM–10 AM PST/PDT; strong engineering and cloud architecture...

Jit Team is seeking a Senior Backend Java Developer to join a Nordic-client backed initiative focused on pension and investment platforms. You will modernize existing systems, deliver scalable Java-based services, and collaborate with cross-functional teams in an international, English-speaking environment.The role emphasizes Java 21, Spring Boot 3.3.x,...

[https://app.ashbyhq.com/api/images/user-content/586ac3cb-f234-40cf-96fd-3daae8c41309/3a2721ac-0cf6-4bb5-a785-483b8d1018c3/Ashby_header.png] What should you know about SKELAR? It's a venture builder — in other words, a company that builds companies. Together with founders, we create consumer businesses that become leaders in global markets across EdTech,...

8Bit - Games Industry Recruitment represents a growing mobile-gaming studio seeking a Senior .NET Backend Developer to help build a new Puzzle RPG on a major IP. The role centers on shaping backend architecture for high performance, reliability, and a superior mobile experience.You will architect, develop and maintain backend services in C#, work with...

Project Details: Location: On-site in Gdansk at least 2 days a week. Duration: Full-time opportunity until at least Q2 2027 Summary The .NET developer and architect roles aim to enhance the Platforms - various ongoing and upcoming projects, ensuring high-quality delivery in software development. Main Responsibilities: Develop and maintain...

# AI Developer**Workplace:** Warsaw**Agreement type:** B2B contract**Working time:** full-time**Working Mode:** hybrid**Specialization:** backend**Category:** IT**Level:** Mid**Reference number:** 3/8/2026/JW/276**publication date:** 2026-09-06Technology and language:JavaPythonSQLAzureDockerKubernetesPostgreSQLTensorFlowGitSpring...

PostgreSQL Java Go SpringImportant: if an employer asks you to log into their system via iCloud or Google, send a code, an SMS or Telegram password, run some code, or install software — refuse. These are signs of fraud.••••••••• delivers application integrity for modern tech stacks, ensuring continuous, measurable assurance that software...

SmartBear delivers application integrity for modern tech stacks, ensuring continuous, measurable assurance that software just works as intended with governance to operate at AI speed and scale. SmartBear offers deep test automation, API lifecycle management, and observability capabilities. With integrations across the SDLC, it sets a new quality standard for...

About our client For our client, the unquestionable leader in the Polish banking sector and one of the largest financial institutions in the region, we are looking for an experienced Java Developer. You will join a team creating innovative solutions used by millions of users every day. About the role As a Java Developer, you will be responsible for the...