Lead Java Developer

Coforge; Kraków; Hybrid; PLN 180,000 - 240,000; Full time

Job summary

Coforge Kraków is seeking a Java Tech Lead with a strong backend focus and intermediate SRE/DevOps experience. You will mentor engineers, drive hands-on development, and collaborate with Principal Engineers and the Head of Engineering to keep backend systems robust and scalable.

You will shape architecture, promote best practices, and oversee CI/CD, testing, and deployment strategies while sustaining a high-performance, high-trust team culture.

Qualifications

• Strong backend Java leadership with hands-on development and mentorship.
• Experience with SRE/DevOps practices and cloud deployments (AWS).
• Excellent knowledge of modern architecture (microservices, modular monolith).
• Ability to design scalable systems and lead engineering teams.

Responsibilities

• Hands-on Java backend development and mentoring a team of engineers.
• Collaborate with Principal Engineers and Head of Engineering to maintain high standards.
• Develop and maintain backend systems with modern architectures and CI/CD pipelines.
• Champion test-driven development and secure, resilient design.

Skills

Backend development

Java

SRE/DevOps

Leadership

Mentorship

System design

Microservices

AWS

Docker

Kubernetes

CI/CD

Testing

Architecture patterns

TDD

Spring Boot 3.x

Maven

JPA/Hibernate

AWS services

Terraform

Tools

Spring Boot 3.x

Maven

JPA/Hibernate

AWS (EKS, EC2, ECR, ECS, Lambda, SAM, S3, Aurora, RDS, DynamoDB, DocumentDB, VPC, Load Balancers, Route 53, SQS, SNS, Secrets Manager, ACM, CloudWatch, CloudTrail)

Terraform

Docker

Kubernetes

Job description

Location: Krakow Hybrid 2 days Office / 3 days Remote

Type: B2b /Employment contract

Roles and Responsibilities

• A Java Tech Lead with a strong focus on backend development, and intermediate experience in SRE/DevOps.
• hands-on development, providing mentorship to a team of engineers, supporting their professional growth.
• collaborate closely with Principal Engineers, other Tech Leads, and the Head of Engineering to develop and maintain our backend systems, ensuring they meet high engineering standards.

Skills & Experience Requirement

• Concepts
• Test-Driven Development (TDD)
• GoF Design Patterns
• Coupling, Cohesion, Modularity, Composition, Encapsulation, Responsibility Segregation, Abstraction
• Layered Architecture
• Hexagonal Architecture
• Package organization types (by feature, by layer)
• Modular Monolith
• Microservices
• System Design
• API Development
• Databases
• RDBMS
• NoSQL
• Transactions
• ACID vs. BASE
• Data sharding
• Data replication
• CI/CD
• Testing
• Testing Trophy
• Schools of Unit Testing
• London (Mockist)
• Classical (Detroit, Chicago)
• Containers
• Functional and Non-Functional Testing
• Deployment Strategies
• Security
• Networking, Protocols
• SLAs / SLOs / SLIs
• DORA metrics
• Technology
• Spring Boot 3.x
• Maven
• JPA/Hibernate
• AWS (EKS, EC2, ECR, ECS, Lambda, SAM, S3, Aurora, RDS, DynamoDB, DocumentDB, VPC, Load Balancers, Route 53, SQS, SNS, Secrets Manager, Certificate Manager (ACM), CloudWatch, CloudTrail)
• Intermediate knowledge in SRE/DevOps
• Terraform
• Docker
• Technical Leadership
• Familiar with at least one decision-making framework (e.g., RAPID)
• Seeks consensus, especially when facilitating technical decision-making
• Leads with questions
• Demonstrates an empowering and enabling mindset, avoids micromanagement, builds trust, and balances autonomy with accountability
• Removes roadblocks for the team
• Does not use a command-and-control or dictatorial management style
• Has a process automation mindset
• Familiar with multiple SDLC processes
• Fosters a high-trust team culture rooted in accountability and continuous learning
• Tracks goals/OKRs

Nice To Have

• IaC experience (Terraform, Bicep) and deployment automation.
• Docker and Kubernetes (AKS) experience.
• Background in migrating monoliths to modular services or microservices.
• Familiarity with SQL Server internals and performance profiling.