Expert Java Engineer

Ciklum is looking for an Expert Java Engineer to join our team full-time in Poland.

We are a custom product engineering company that supports both multinational organizations and scaling startups to solve their most complex business challenges. With a global team of over 4,000 highly skilled developers, consultants, analysts and product owners, we engineer technology that redefines industries and shapes the way people live.

About the role:

As an Expert Java Engineer, become a part of a cross-functional development team engineering experiences of tomorrow. 

You will lead the Ciklum pod that our Client is bringing on to scale post-Series B engineering. The pod will deliver against two parallel workstreams: net-new feature engineering on the Java 21 / Spring Boot 3 platform, and the Salesforce-to-microservices data and capability migration. You are the single throat-to-choke for the pod technically, and the principal technical interface to Client 's VP Engineering and senior staff engineers.

Responsibilities:

• Own the technical roadmap and sequencing of the Salesforce → microservices migration. Define bounded contexts, the order of extraction, and the parallel-run / cutover strategy
• Set engineering standards for the pod — ADRs, code review bar, branching model, definition of done. Bring them; don't ask Client to write them
• Run the pod's delivery rhythm: planning, demos, retros, weekly engineering written update to Client
• Personally code 40–60% of the time. This is a hands-on lead role, not an architect-on-the-sidelines role
• Front the technical relationship with Client — RFC reviews, architectural debates, escalation point for blockers
• Own quality at the pod level: SLOs are met, test coverage holds, deployments don't break trunk
• Be the productivity multiplier on AI tooling for the pod — set the patterns for Copilot/Claude Code use, prompt libraries, AI-assisted code review

Requirements:

• 8+ years building Java backend systems, with at least 3 years on Spring Boot in production
• Demonstrable monolith-to-microservices migration experience as the technical lead — not as a contributor. You can talk through the seams you cut, the data you split, the failures you handled
• Strong AWS architectural experience — VPC design, IAM, RDS PostgreSQL, ECS/EKS, SQS/SNS or equivalent
• Hands-on with async messaging architectures (Kafka, RabbitMQ, AWS SNS/SQS, or equivalent) including idempotency, ordering, and backpressure
• Track record of leading pods of 4–8 engineers in a fully remote or hybrid setting
• Native-level English — written and spoken. You will write the team's ADRs and design docs

Desirable:

• Direct experience with Salesforce data extraction and migration to a relational target
• Working experience with AI agent frameworks — LangGraph, LangChain, CrewAI, or comparable
• Logistics, supply chain, B2B marketplace, or WMS / TMS domain background
• Prior technical-lead role in a Series B–C scale-up that grew from 5 to 50+ engineers
• Open-source contributions or technical writing that demonstrate the engineering bar

What`s in it for you?

• Strong community: Work alongside top professionals in a friendly, open-door environment
• Growth focus: Take on large-scale projects with a global impact and expand your expertise
• Tailored learning: Boost your skills with internal events (meetups, conferences, workshops), Udemy access, language courses, and company-paid certifications
• Endless opportunities: Explore diverse domains through internal mobility, finding the best fit to gain hands-on experience with cutting-edge technologies
• Flexibility: Enjoy flexibility – full remote working possibilities
• Care: We’ve got you covered with company-paid medical insurance, mental health support, and financial & legal consultations

About us:

At Ciklum, we are always exploring innovations, empowering each other to achieve more, and engineering solutions that matter. With us, you’ll work with cutting-edge technologies, contribute to impactful projects, and be part of a One Team culture that values collaboration and progress.

With delivery centers in Wrocław and Gdańsk, our 300+ professionals in Poland drive forward-thinking solutions for global clients. Join a community where collaboration sparks innovation—and your impact reaches millions.

Explore, empower, engineer with Ciklum!

Interested already? We would love to get to know you! Submit your application. We can’t wait to see you at Ciklum.

#LI-RS1