Java Developer (Freelance)
- Salary
- €30 hourly
- Level
- Mid
- Work type
- Remote · Poland only
Not stated in the posting: visa.
Open. First seen 3 October 2026.
About the role
We are looking for a Mid-level Java Developer to join our client’s engineering team and support the development of a SaaS platform used by enterprise customers. This role requires working in close collaboration with both Netguru and our client’s teams, acting as a fully integrated contributor within the client's software organization.
This is a B2B contract position.
Hourly rate: up to 30 EUR/h (net, invoiced).
Working hours: 14:30 to 22:30 CET (±30 minutes).
Responsibilities
- Perform development work as part of the client’s software engineering teams
- Support the client’s developers in daily tasks and project work
- Provide assistance to the client’s customers during US working hours
- Monitor and resolve critical issues that arise outside of standard European hours
- Participate in regular team meetings and virtual team events
- Integrate with the client’s wider developer community
- Contribute to the ongoing development of the client’s SaaS solution, including:
- Integrating with customer ERP systems to retrieve data
- Analyzing data and delivering insights back to customers
- Building and maintaining features within the SaaS application
Requirements
- 3–4 years of experience in backend development with Java and Kotlin
- Solid understanding of object-oriented programming and Java fundamentals
- Experience with Spring Boot and RESTful API design
- Familiarity with SQL and working with relational databases
- Comfortable working independently during off-standard hours
- Ability to communicate clearly and collaborate in distributed, international teams
- Professional working proficiency in English (spoken and written)
- Exposure to startups, SaaS products, or customer-facing development
- Current residence within the European Union is required.
Nice to Have
- Experience with ERP system integration
- Exposure to SaaS product development
- Familiarity with CI/CD pipelines and containerized environments
- Knowledge of AWS or other cloud platforms
- Prior experience working in customer-facing support or issue resolution
Benefits
In return, we offer:
- 100% remote, flexible work;
- work with an experienced team of developers and continuous development of your hard and soft skills;
- dev-friendly processes such as Continuous Integration, Continuous Delivery, Code Review and bug bashes;
- long-term collaboration on challenging products (FinTech, B2B software, E-commerce and more).
What will happen next?
- We would like to know you better, so we will invite you for a meeting with our recruiter.
- Next, you'll be asked to solve the task or invited to an interview and pair programming with one of our iOS Developers.
Looking for a full-time job? Check out our Career Page and find out more about our open recruitment processes.
If you need any disability-related adaptation at any step of the recruitment process – simply let the recruiter know! We'd be happy to help.
What this role asks for
Standard for backend roles
AWS · Java
Common in backend postings at any company.
Read against Netguru's other open postings on this site.
The team: NTG Freelancer HIRES STEADILY
This role is one of 15 open in NTG Freelancer. 4 were posted in the last 30 days and the oldest in March: a team that hires all year rather than one being built.
WHAT THE TEAM WORKS WITH, ACROSS ITS POSTINGS
CI/CD (7 of 15), AWS (4 of 15), Azure (4 of 15), Java (4 of 15), Kotlin (4 of 15), LLM (4 of 15), React (4 of 15)
OTHER ROLES ON THIS TEAM
- Senior Data Engineer - Freelance posted Oct 16
- Senior Java Developer (Polish-speaking) - Freelance posted Oct 13
- QA Automation Engineer - Freelance posted Oct 8
- (Senior) Product Manager - Freelance posted Sep 24
- (Senior) Fullstack Engineer (Go+ Selenium + Playwright) - Freelance posted Sep 15
- Senior Android Developer - Freelance posted Aug 26
- (Senior) Node.js Developer - Freelance posted Aug 20
- Product Owner - Freelance posted Aug 19
- Senior IT Business Analyst with AI - Freelance posted Aug 19
- Senior Python Developer - Freelance posted Aug 18
- Senior Python Developer - Freelance posted Aug 14
- (Senior) Frontend Developer with React and Flutter - freelance posted Aug 7
- Backend Kotlin Engineer - Freelance posted Jun 8
- (Senior) Golang Developer - Freelance posted Mar 11
From the team and dates on Netguru's own job board.
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