Java Architect - Staff Engineer

Staff Engineer - Java Architect – Enterprise AI Platform

📍 Hybrid in Warsaw (3 days/week onsite required) | 💼 Full-time, B2B - or UoP | 💰 Up to $10,000/month

Our client is a US-based technology company headquartered in New York City, delivering AI-driven 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 exceptional skill and culture of Polish software professionals.

Their integrated ecosystem combines:

• PaaS (Platform as a Service): an AI-native enterprise operations foundation that optimizes workflows, surfaces insights, and accelerates value creation.

• SaaS (Software as a Service): a cloud platform delivering performance, intelligence, and scalability at enterprise level.

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

With over a decade of experience supporting high-growth and private equity–backed companies, this organization combines deep domain expertise with cutting-edge technology to deliver strategic advantage.

About the Role – 

Staff Engineer - Java Architect

We are seeking an experienced Java Architect to lead the design, development, and architecture of scalable, robust software solutions.

You will work closely with cross-functional teams, mentor developers, and ensure that architectural strategy aligns with business objectives. This role requires both strong technical depth and leadership excellence.

Key Responsibilities

• Architectural Design: Define and document scalable, secure application architecture using Java (back-end) and React (front-end).

• Technology Leadership: Mentor teams, drive technical decisions, and enforce best practices.

• Solution Development: Lead the design of complex systems integrating front-end and back-end layers.

• Code Quality: Conduct and oversee code reviews to ensure maintainable, high-quality software.

• Innovation: Research and recommend new technologies and methodologies to enhance system performance.

• Collaboration: Partner with product and business teams to translate requirements into scalable technical solutions.

• Risk & Performance Management: Identify risks early and ensure performance optimization, high availability, and security.

  
  

Required Skills & Experience

Technical Expertise

• Extensive experience in Java (Spring, Spring Boot) for building back-end services.

• Proven ability in RESTful API design and microservices architecture.

• Strong understanding of front-end integration (React, Redux) and responsive design.

• Proficiency with cloud platforms (AWS, Azure, or GCP) and containerization (Docker, Kubernetes).

• Solid knowledge of SQL and NoSQL databases, ORM frameworks, and CI/CD practices.

• Familiarity with architectural patterns (MVC, MVVM) and event-driven architectures.

Leadership & Problem-Solving

• 3+ years in an architectural or technical leadership role.

• Excellent stakeholder management and mentoring capabilities.

• Strong analytical and decision-making skills to solve complex technical challenges.

Education & Certifications

• Bachelor’s or Master’s degree in Computer Science, Engineering, or related field.

• 10+ years in software development with strong focus on Java.

• Cloud, React, or Java certifications are a plus.

Soft Skills

• Excellent communication and interpersonal abilities.

• Strong organizational and prioritization skills.

• A collaborative mindset with passion for innovation and continuous learning.

  
  

What’s Offered

• B2B cooperation or UoP – up to $10,000/month

• Career growth in a global fintech environment

• High-impact projects in an expanding technology sector

• Friendly, open, and ambitious team culture

• Hybrid model – 3 days/week in a modern Warsaw city-centre office

  
  

👉 Ready to design the future of enterprise technology?Apply now and join a global innovator shaping the next generation of AI-powered platforms.