KotlinJava Tech Lead

We are hiring on behalf of our client a global innovator in fitness and wellness technology. Their mission is to empower people to live fit strong long and happy lives by delivering integrated experiences to millions of members anytime anywhere.

We are looking for a Kotlin/Java Tech Lead to join an e-commerce engineering this role you will lead the design and delivery of scalable backend platforms and services powering the companys customer-facing commerce experience across web retail and other sales channels.

This is a hands-on technical leadership role. You will guide engineering decisions mentor other engineers partner closely with product and design and help the team deliver high-impact initiatives with strong engineering quality scalability and reliability.

Key takeaways:

Stack: Kotlin/Java Spring Boot microservices Docker Kubernetes AWS PostgreSQL CI/CD Datadog technical leadership experience

Salary: 26 000 PLN - 30 000 PLN gross on the Contract of Employment

Working model: Hybrid - 3 days/week from the office

Location: ul. Grzybowska Warsaw

Recruitment process:

1. A call with MOTIFE Recruiter
2. Panel interviews with the team (coding architecture and cross-collaboration interviews)

Responsibilities:

Technical Leadership

• Lead the delivery of small to large engineering initiatives from technical discovery through implementation and production readiness.
• Guide the team in making strategic backend architecture decisions that support scalability performance and long-term maintainability.
• Own technical trade-offs and ensure solutions are aligned with business goals user needs and engineering standards.
• Mentor engineers through design reviews code reviews and day-to-day technical collaboration.

Backend Engineering

• Build and improve backend platforms and services.
• Design and scale RESTful microservices used across web retail and other sales channels.
• Develop backend services using technologies such as Java Kotlin Spring Boot Docker and Kubernetes.
• Work with data stores such as PostgreSQL MongoDB DynamoDB Elasticsearch or similar technologies.

Delivery & Product Collaboration

• Partner closely with product managers designers and peer engineers to scope build and deliver end-to-end features.
• Translate product strategy and business requirements into reliable scalable technical solutions.
• Drive iterative delivery in an agile engineering environment.
• Maintain strong relationships with stakeholders and ensure clear communication around scope risks and delivery progress.

Engineering Excellence

• Promote strong engineering practices including unit testing test-driven development CI/CD observability and production ownership.
• Apply a DevOps mindset to build services that are reliable observable and easy to operate.

Requirements:

Technical Expertise

• 6 years of professional software development experience.
• Strong backend engineering experience with Java or Kotlin.
• Proven experience building and scaling RESTful microservices.
• Hands-on experience with Spring Boot Docker and Kubernetes.
• Experience with cloud infrastructure such as AWS or GCP.
• Familiarity with data stores such as PostgreSQL MongoDB DynamoDB Elasticsearch or similar technologies.
• Experience with unit testing test-driven development and CI/CD pipelines.

Leadership Experience

• Experience leading engineers to deliver high-impact technical projects.
• Proven ability to mentor junior and mid-level engineers and support their technical growth.
• Ability to guide technical decision-making architecture discussions and delivery planning.
• Experience with end-to-end feature ownership in a cross-functional product environment.

Collaboration & Mindset

• Strong communication skills and ability to work effectively with product design and engineering stakeholders.
• Agile mindset with a strong focus on iterative design and delivery.
• High ownership strong delivery orientation and ability to operate in a fast-moving engineering environment.
• Strong desire to learn share knowledge and help engineers achieve their highest potential.

What we offer:

• 100% paid medical care
• Multisport
• Creative tax (KUP)
• Home office allowance
• MacBook Pro

Apply now

If you enjoy technical leadership hands-on backend engineering and building platforms used at scale this role is a strong opportunity to make a real impact. Please apply via our careers page and submit your CV in English.

Required Experience:

Staff IC