Hybrid Lead Java Architect – E‑commerce & AI Solutions

Britenet; Warszawa; Hybrid; PLN 180,000 - 280,000; Full time

Benefits offered by this job

Hybrid work model

Team events

Language lessons

Soccer clubs

Job summary

Britenet in Warsaw is seeking a Senior Java Developer/Team Lead to drive cross-functional development for mobile, e-commerce, or consumer-facing platforms.

You will shape technical roadmaps, participate in product discovery with Product, UX, and Business, and own end-to-end delivery in a hybrid setup.

The role requires 5+ years in Java, strong JVM ecosystem skills, and hands-on leadership; English and Polish proficiency is expected.

Qualifications

• Min. 5 years of experience as Java Developer.
• Strong experience with Java ecosystem: Java, Kotlin, Groovy, Spring; Python and Go.
• Experience with Spark, Hadoop, Mesos and TensorFlow.
• Knowledge of engineering practices: TDD, DDD, CI/CD, Pair Programming.
• Ownership and responsibility for outcomes, quality and reliability.
• Hands-on engineering with ability to drive decisions, review code and design architecture.
• Excellent English and Polish language skills (at least B2).
• Open to hybrid work from the client's Warsaw office.

Responsibilities

• Lead a cross-functional development team, drive architectural decisions and maintain engineering excellence.
• Partner with Product, UX and Business to translate goals into actionable roadmaps and AI-driven solutions.
• Take accountability for end-to-end delivery, quality and system reliability in a hybrid setup from Warsaw.

Tools

Spark

Hadoop

Mesos

TensorFlow

Job description

Britenet in Warsaw is seeking a Senior Java Developer/Team Lead to drive cross-functional development for mobile, e-commerce, or consumer-facing platforms.

You will shape technical roadmaps, participate in product discovery with Product, UX, and Business, and own end-to-end delivery in a hybrid setup.

The role requires 5+ years in Java, strong JVM ecosystem skills, and hands-on leadership; English and Polish proficiency is expected.