Senior Java Developer (Polish-speaking) - Freelance

Netguru · Poland · contract · Remote · 2 days ago

Sign up to apply
Your first one is free
Posted October 13, 2026 · Read from Netguru
Why a CV for this job?

94% of employers say their filters drop qualified candidates whose CV does not match the ad's exact criteria (Harvard Business School, 2021).

  • They see what they asked for, first. Your experience that matches the ad leads, in the ad's own words, so someone skimming finds it in seconds.
  • It gets past the software. Many larger employers use software that ranks CVs by how closely they match the ad, often before anyone reads them.
  • In the language of the ad. An ad written in Spanish gets a CV in Spanish, even when yours is in Portuguese.
  • Your facts, nothing invented. Your own experience, reordered and reworded. What the ad wants and your CV does not show is listed for you to add, only if it is true. You check it before you send it.
See an example

Netguru is a trusted partner in digital commerce. The company helps leading brands modernize B2B solutions, marketplaces, and retail ecosystems. Since 2008, it has empowered businesses with cutting-edge technology, AI-powered personalization, and world-class engineering and design teams. A certified B Corporation®, Netguru is trusted by major brands including IKEA, VW, OLX, Delivery Hero, Żabka, Wolt, Careem, and Vinted.

Requirements

  • Fluent Polish.
  • English proficiency sufficient to read technical documentation, handle business correspondence, and communicate verbally with external international vendors.
  • Knowledge of Java, Spring Boot, Hibernate/JPA, SQL, JUnit, Kafka.
  • At least 4 years of experience as a software developer.
  • Solid knowledge of design patterns and object-oriented programming principles.
  • Knowledge of Azure cloud services.
  • Ability to work with data mappings.
  • Knowledge of the JSON data format.
  • Knowledge of SQL.
  • Building data pipelines.
  • Ability to work with REST APIs.
  • Knowledge of creating topics (Kafka / Debezium).

CET working hours

Rate: up to 160 PLN/h

In return, we offer:

  • 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).

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.

How freelancing works at Netguru?

As a Netguru freelancer, you can choose what works well for you. You decide when, where, and how you work on projects and tasks.

We match you with work that fits your skills. Plus, you have access to various opportunities across different industries and companies. That means you will not only gain more experience, but also develop various skills.

But there's more. Netguru freelancers can benefit from full-time collaboration and really be a part of the team.

So, are you ready to make an impact? Join Netguru, and let's build beautiful software together.

We are looking for a Senior Java Developer located in Poland.

Start date: around 09.11.2026

Duration: 3-6 months

Full-time

Hybrid work: 1-2 day per month form office in Warsaw

Employer
Netguru
Location
Poland · Remote
Contract
contract