Java Technical Leader

Hi there!

We’re Tooploox, part of Solvd Inc.

We create AI-powered products and services that make a real difference. Our team of nearly 200 specialists - including a 40+ person R&D team with many PhDs - has pioneered AI solutions across industries from healthcare to e-commerce. We’ve published research in top-tier venues like NeurIPS and ICML, while delivering real-world applications that help our clients innovate and scale.

Now, as part of Solvd Inc., we’re building on our strengths with even greater global reach and resources — while keeping the creative, human-scale culture that defines us here in Poland. If you want to work on meaningful AI projects, with space to grow and the freedom to innovate, you’ll feel right at home.

We are looking for a Java Technical Leader to join our team. The ideal candidate will have extensive experience developing high-performance, scalable Java applications. You will be leading the design, implementation and maintenance of complex software systems while overseeing a team of engineers and collaborating with cross-functional teams to deliver robust solutions.

Here's what your journey with us would look like:

What you will do:

• Design and estimate features to be delivered by the team
• Develop and maintain the server-side logic of our applications using Java
• Implement efficient and performant backend code for high-volume production applications
• Monitor application health and reliability in production environment
• Contribute to all phases of the development lifecycle, from concept to deployment
• Review and refactor code, establishing best practices for code hygiene and organization
• Lead a team of developers while providing mentorship to less-experienced developers, fostering an environment of continuous learning and improvement
• Identify and manage risks in regards to project deadlines and technical solutions

Experience and skills you need to join us:

• 7+ years of backend development experience in Java (Spring ecosystem)
• Strong RESTful and GraphQL API design and implementation skills. Experience with federated GraphQL considered a strong advantage
• Expertise in performance troubleshooting, profiling, and debugging tools
• Extensive experience with message brokers (e.g., Kafka, RabbitMQ, ActiveMQ) and caching (e.g., Redis, Memcached)
• Experience with authentication and authorization mechanisms, especially OAuth 2.0
• Skilled in Docker, Kubernetes, distributed systems challenges and resilience patterns (e.g., circuit breakers)
• Strong understanding of patterns of distributed systems design
• Proficient with code versioning tools, such as Git
• Skilled in CI/CD tools and practices
• 2+ years of experience in team leader roles
• English: B2+
• Strong understanding of Agile process, roles within the process and key ceremonies

It would be great if you also have:

• Experience with API contract testing
• NoSQL (e.g., MongoDB, Cassandra)
• Prompt engineering and experience with integration of GenAI LLMs into productions (ideally) or pet projects at least (OpenAI, Azure OpenAI, Bard, Llama)
• Familiarity with federated Graph architectures

How we work:

At Tooploox, you have the flexibility to choose your working hours and location. While we value remote work, we also believe in building relationships and invite you to join us in our Warsaw and Wrocław offices. Enjoy a relaxed atmosphere and try some “home-made” pizza from our office pizza oven. We love having pets in the office, so feel free to bring yours along.

Join us and shape the future of AI while working the way you like!