Team Leader (Java/Kotlin - Hands-on Engineering Lead)

Job Description

Important things for you

• Contract of employment, tax-deductible cost

• Additionally, depending on your annual assessment and the company's results:

  • Annual bonus up to 20% of the annual salary gross

  • Long-term discretionary incentive plan based on Allegro.eu shares

• A hybrid work model office located in Warsaw in Fabryka Norblina

About the role

Join the Delivery Experience (DEX) department, responsible for developing key logistics technologies at Allegro. We build delivery time prediction systems, optimal delivery method selection, and courier integrations. Our challenges include scalability (handling up to 60k requests per second), high performance, and engineering best practices.

We are looking for a leader who is still close to technology. In this role, you will spend around 20-50% of your time on technical work (coding, code reviews, architecture), with the remaining time focused on team development and business collaboration.

What will you do?

• Lead the development team (5-7 members) of Allegro’s delivery time estimation solutions – ensuring accurate, scalable, and reliable delivery predictions
• Technical leadership – mentoring, code reviews, ensuring high code quality
• Design and implementation of key systems (Java/Kotlin, Spring, Kubernetes)
• Collaboration with cross-functional teams - data science, data engineering, analytics, UX, operations
• Ensuring high quality - clean code, code review, TDD, CI/CD to ensure the quality and maintainability

Who are we looking for?

• Experience in leading a team (Java/Kotlin) as a Tech Lead or Team Leader 
• Still actively coding and eager to maintain technical expertise
• Strong knowledge of engineering best practices (testing, CI/CD, scalable architecture)
• Experience with high-traffic distributed systems
• Ability to bridge technical and business perspectives
• Proficiency in English (B2+)

Nice to have

• Experience in logistics/delivery-related systems
• Familiarity with BigQuery, ML, geolocation technologies

Additionally, we offer

• We have well-located offices (with fully equipped kitchens and bicycle parking facilities) and excellent working tools (height-adjustable desks, interactive conference rooms)
• A wide selection of fringe benefits in a cafeteria plan – you choose what you like (e.g. medical, sports or lunch packages, insurance, purchase vouchers)
• English classes that we pay for related to the specific nature of your job
• 16" or 14" MacBook Pro with Apple Silicon processor and, 36GB RAM or a corresponding Dell with Windows (if you don’t like Macs) and other gadgets that you may need 
• Working in a team you can always count on — we have on board top-class specialists and experts in their areas of expertise
• A high degree of autonomy in terms of organizing your team’s work; we encourage you to develop continuously and try out new things
• Hackathons, team tourism, training budget and an internal educational platform, MindUp (including training courses on work organization, means of communications, motivation to work and various technologies and subject-matter issues)
• If you want to learn more, check it out

Why is it worth working with us

• We work with cutting-edge technologies to optimize logistics processes and improve delivery experiences, including automated route optimization, real-time tracking, data & geospatial technology and machine learning models for demand prediction
• Depending on the team's needs, we use the latest versions of Java, Scala, Kotlin, Groovy, Go, Python, Spring, Spark, Mesos, TensorFlow, JavaScript/TypeScript, and React
• Our IT team includes over 1700 members who actively share their knowledge at various conferences and co-create a blog: allegro.tech
• We operate with several thousand microservices, handling 1.8m+ rps on our business data bus
• Big Data – managing several petabytes of data and leveraging Machine Learning in production environments
• We practice Code Review, Continuous Integration, Scrum/Kanban, Domain Driven Design, Test Driven Development, and Pair Programming, depending on the team
• Our internal ecosystem is founded on self-service and widely used tools like Kubernetes, Docker, Consul, GitHub, or GitHub Actions. From day one, you will be able to develop software using any language, architecture, and scale, limited only by your creativity and imagination
• To match the scale, we build entire Platforms of tools and technologies that accelerate and facilitate day-to-day development while ensuring the best Developer Experience for our teams
• Technological autonomy: you get to choose which technology solves the problem at hand without needing management’s consent. You are responsible for what you create
• Our deployment environment includes a combination of private Data Centers (tens of thousands of servers) and Public Clouds (Google Cloud and Microsoft Azure)
• We have over 100 original open source projects and a few thousand stars on GitHub
• We organize the Allegro Tech Live event, a 100% remote version of our offline Allegro Tech Talks meetups, and make guest appearances at various tech communities
• We prioritize continuous development. We organize hackathons and internal conferences like the annual Allegro Tech Meeting. Our employees regularly attend events in Poland and abroad (Europe and USA), with each team having its own budget for training and study aids. If you want to keep growing and share your knowledge, we will always support you

This may also interest you

Allegro Tech Podcast → https://podcast.allegro.tech/

Booklet → https://jobs.allegro.eu/job-areas/tech-data/ 

Send in your CV and see why it is #dobrzetubyć (#goodtobehere)