Java Technical Leader

Java

Tęczowa 7, Wrocław+1 Location

Tooploox

25 000 - 30 000PLN

Net per month - B2B

Full-time

B2B

Senior

Remote

Tech stack

English

B2

Java

master

Redis

advanced

REST API

advanced

Kafka

advanced

GraphQL

advanced

Spring

advanced

CI/CD

regular

Docker

regular

LLM's

nice to have

NoSQL

nice to have

Job description

Hi there!

We are Tooploox, an AI software development company offering custom AI solutions and services. We help innovative companies and startups design and build digital products with generative AI, mobile, and web technologies.

Our team, consisting of nearly 200 experts including our R&D team of over 40 engineers, many with PhDs, has pioneered AI solutions across industries like healthcare, fashion, and e-commerce. We’ve published over 15 research papers in top conferences like NeurIPS and ICML.

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!

Published: 14.08.2025

Office location