Senior Java developer

We are looking for an experienced Senior Java engineer with 5+ years of commercial experience to join a large-scale data-driven platform with millions of users.

Requirements: 

• 5+ years of experience in development

• Experience with Vert.x, Cassandra, Redis

• Experience with AWS (EKS, S3, Lambda, etc.) and Cloudflare Serverless

• Confident in using Git, Linux/Unix, Maven

• English: Upper-Intermediate or Advanced

Will be a plus: 

• Java Mastery: 5+ years with JVM internals (GC tuning/JIT optimization)

• Distributed Systems: Production experience with 50k+ RPS systems

• Data Modeling: Data locality, reads and writes amplification awareness

Responsibilities: 

System Architecture & Implementation

• Migrate to use service based APIs from a monolithic architecture

• Lead design of low-latency, event-driven architecture

• Implement reactive patterns on k8, using Kafka, Flink, Quarkus and more

Performance Engineering:

• Conduct GC tuning for <100ms p99 latency

• Design and improve distributed caching patterns

• Comfortable with writing and running load testsCross-Functional Leadership

• Co-create API specifications with mobile/desktop teams

• Partner with DevOps on CI/CD pipeline enhancements

• Mentor junior engineers through pair programming

Production Excellence:

• Own services from design through post-deployment monitoring

• Conduct blameless post-mortems for incident analysis

• Implement chaos engineering practices

Product

The platform processes large-scale real-time data and requires a skilled engineer to develop and optimize data pipelines, storage solutions, and analytics systems. You will work closely with a highly experienced Data Architect and collaborate with a strong engineering team to ensure high-quality delivery.

Work Schedule: Full-time working day in our office (flexible hours) or remote

Interview stages:

• 1-st stage — call with the Recruiter

• 2-nd stage — interview with the Java developer and the Recruiter

• 3-rd stage — technical interview with the client (group 1)

• 4th stage — technical interview with the client (group 2)

• 5th stage - cultural fit interview
  
  

Benefits:

• Projects with modern stack

• Work from anywhere (fully remotely or in our office) 

• Paid vacations and sick-leaves, additional days-off, relocation bonus

• Wellness: Medical insurance/ sport compensation/ health check-up+flu vaccination at your choice

• Education: regular tech-talks, educational courses, paid certifications, English classes

• Fun: own football team, budget for team-lunches, branded gifts

Recruiter Mariia Katrych