Jobs für java freelancer bei Berlin

We are seeking an experienced German-speaking IT Consultant to support our client in a migration from IBM WebSphere to JBoss. The role will start with an initial 1-2 day meeting in Hamburg to discuss the project scope, followed by fully remote work for the remainder of the 6-month contract. This is an exciting opportunity for a skilled consultant to...

About The Role What if your years of software engineering experience could directly shape how AI writes code for millions of developers? We're looking for Software Engineers in Berlin to evaluate, rank, and refine AI-generated code — helping the next generation of coding assistants produce solutions that are correct, efficient, idiomatic, and...

About The Role What if the code you write could directly power the AI systems shaping how millions of people interact with technology? We're looking for Back End Developers in Berlin to design, build, and optimize the server-side systems and APIs that drive cutting-edge AI products — from data pipelines and model-serving infrastructure to scalable...

About The Role What if the code you write could directly shape how the next generation of AI understands and generates software? We're looking for Software Engineers in Berlin to build, evaluate, and improve AI-generated code — helping train AI systems to think like real developers. You'll write solutions, review AI outputs, and provide the expert-level...

Senior Software Engineer — Agentic Coding (AI Training) About The Role What if your software engineering expertise could define how the next generation of AI writes, debugs, and ships code on its own? We're looking for Senior Software Engineers in Berlin to work at the frontier of agentic AI — building, evaluating, and improving autonomous coding...

Company DescriptionBlackbird Collective is an HR organization that helps startups and established companies find employees that match their current needs. We work on freelance and interim recruitment projects for clients based in Germany, most of which are located in Berlin.Job DescriptionAt the moment, we are collaborating with a few innovative startups...

We’re looking for a backend engineer who thrives in fast-moving environments and enjoys building robust systems end-to-end. You’ll work across data pipelines, APIs and infrastructure, ensuring our platform runs efficiently and scales cleanly as we grow. Your role Develop and maintain backend features and APIs for our core platform Improve database...

Liebe Fullstack Entwickler,   für eine der führenden Digital-Agenturen Deutschlands suchen wir ab sofort mehrere Fullstack Entwickler. 100% Remote mit langfristigem Vertrag.   QUICK FACTS:- Freiberuflich/Freelance- Start: ASAP- 100% Remote- Dauer: langfristig, Verlängerung möglich- Kapazität: Vollzeit oder Teilzeit, beides möglich- Sprache: Deutsch...

Liebe AI Platform Engineers,   für eine der führenden Digital-Agenturen Deutschlands suchen wir ab sofort mehrere AI Platform Engineers. 100% Remote mit langfristigem Vertrag.   QUICK FACTS:- Freiberuflich/Freelance- Start: ASAP- 100% Remote- Dauer: langfristig, Verlängerung möglich- Kapazität: Vollzeit oder Teilzeit, beides möglich- Sprache:...

Dear AEM Developers,   For one of the leading tech companies in the US (global reach), we are currently looking for multiple AEM Architects. 100% remote and long-term.   QUICK FACTS:- Freelance/Contract- Start: ASAP- 100% remote- Duration: Long-term (12+ months)- Capacity: Full-time, part-time also possible- Language: English- UK business...

Key job characteristics: Location: BerlinType: Full time, hybrid/on-siteLanguages: German (min.B2) and English Dear Applicants, for our client - public sector company - we are looking for a skilled Mobile Developers (specialized in both iOS or/and Android). On this position, you will play a crucial role in enhancing the digital services provided by our...

Associate Lecturer - Computing You will be based on site at the Berlin Campus This is an Associate engagement, offered on a freelancer contract basis.Hourly rate as follows: from €59.80 for Blended LearningRead the full job description here Applicants must reside in Germany to be eligible for this roleThe Opportunity:Are you passionate about education...

This is a remote position. Contract opportunity for a skilled Senior Backend Developer (Java & GCP) to join a major project within the financial services sector. In this role, you will focus on building scalable systems, microservices, and event-driven architectures. Working predominantly from home, you will collaborate with an international team to...

IU INTERNATIONAL UNIVERSITY – Because teaching is not just a job, it's a statement. You don't just want to teach, you want to make a difference? Then start at Germany's largest university and shape the future of teaching with us - in an environment that focuses on your professional and personal needs. Contribute to our academic world at our campus...