Informacje o stanowisku

Team Lead (Java + React.js)

Technologies we use

• React.js
• Redux
• TypeScript
• HTML
• CSS
• JavaScript
• Java
• Spring Boot
• Hibernate
• Docker
• Kubernetes
• AWS
• Microsoft Azure
• Google Cloud Platform

• Windows

About the project

Hybrid in Warsaw (3 days/week onsite required) | Full-time | Employment contract up to $9,500/month

Our client is a US-based technology company headquartered in New York City, delivering digital solutions and consulting services that transform businesses and drive measurable value. With offices across multiple countries, the company is now investing in a new engineering centre in Warsaw, recognizing the strong technical culture and exceptional talent of Polish software professionals.

Their integrated ecosystem combines:

PaaS (Platform as a Service): an AI-native enterprise operations foundation built to optimize workflows and accelerate value creation.

SaaS (Software as a Service): a cloud platform delivering unmatched performance, intelligence, and execution at scale.

S&C (Solutions & Consulting Suite): modular technology playbooks designed to manage, grow, and optimize company performance.

With over a decade of experience supporting high-growth and private equity-backed platforms, the company brings deep domain expertise and a proven ability to turn technology into a strategic advantage.

Role Overview

We are looking for a Full Stack Development Lead with expertise in Java and React.js to drive the design, development, and delivery of scalable web applications. This role requires strong leadership, hands-on technical expertise, and the ability to guide development teams in an Agile environment.

As a Lead Developer, you will collaborate with cross-functional teams to ensure best practices, code quality, and successful project execution.

Your responsibilities

• Define and implement architectural best practices for scalable, high-performance applications.
• Lead a team of full-stack developers, providing mentorship, code reviews, and technical guidance.
• Collaborate with product owners, designers, and DevOps teams to align technical solutions with business goals.
• Design and develop responsive, user-friendly front-end applications using React.js, Redux, TypeScript, and modern JavaScript (ES6+).
• Build and maintain RESTful APIs and microservices using Java, Spring Boot, Hibernate, and JPA.
• Ensure seamless integration between front-end and back-end, optimizing performance and security.
• Design microservices-based architectures ensuring modularity and scalability.
• Optimize database interactions and caching strategies using SQL (PostgreSQL, MySQL) and NoSQL (MongoDB, Redis).
• Implement best practices for performance tuning, security, and scalability.
• Manage application deployments using Docker, Kubernetes, and CI/CD pipelines (Jenkins, GitHub Actions, GitLab CI/CD).
• Work with AWS, Azure, or GCP to optimize infrastructure and deployment.
• Participate in Agile/Scrum processes, sprint planning, and retrospectives.
• Collaborate closely with stakeholders to translate business requirements into technical solutions.
• Drive process improvements and uphold best coding practices across the team.

Our requirements

• Strong expertise in React.js, Redux, TypeScript, HTML5, CSS3, and modern JavaScript (ES6+).
• Hands-on experience with Material-UI, Bootstrap, or Tailwind CSS.
• Proficiency in Java, Spring Boot, Hibernate, JPA, and RESTful API development.
• Experience designing and implementing microservices architecture.
• Knowledge of authentication and security standards (OAuth2, JWT, etc.)
• Experience with Docker, Kubernetes, and cloud platforms (AWS, Azure, GCP).
• Familiarity with CI/CD tools for automated builds and deployments.
• Proven experience leading and mentoring development teams.
• Strong understanding of Agile methodologies (Scrum/Kanban) and DevOps culture.
• Experience conducting code reviews and ensuring best engineering practices.
• Bachelor’s or Master’s degree in Computer Science, Engineering, or related field.
• 7+ years of hands-on experience in full-stack development (Java + React.js).
• Strong problem-solving and analytical skills.
• Excellent communication and leadership abilities.
• Ability to manage multiple priorities in a fast-paced environment.
• Passion for continuous learning and staying current with emerging technologies.

This is how we organize our work

• at the client's site
• you focus on a single project at a time
• you develop several projects simultaneously
• you have influence on the product
• you focus on product development
• you focus on code maintenance
• scrum
• kanban

This is how we work on a project

• Continuous Deployment
• Continuous Integration
• documentation
• issue tracking tools
• testing environments

What we offer

• Employment contract (UoP) with monthly compensation up to $9,500
• Opportunity to grow in a global fintech environment
• High-impact projects with cutting-edge technology
• Collaborative, open, and ambitious team culture
• Hybrid model – 3 days/week onsite in Warsaw city centre

Benefits

• private medical care
• remote work opportunities
• integration events

Optiveum is a recruitment and consulting company created based on our 20-plus years of experience in HR & IT services.

We work for Clients located in Poland and abroad providing our local and international Candidates with Project-based or Permanent job opportunities in a remote or office-based model.

Warszawa - Oferty pracy w okolicznych lokalizacjach