Java Tech Lead / Solution Architect (React , Telecom)#2694

AIMPROSOFT is looking for a Java Tech Lead / Solution Architect (React , Telecom)

Aimprosoft, a fast-growing IT company, is looking for a Java Tech Lead / Solution Architect (React , Telecom) on a contract basis (≈ 4+ months) an international project in the Telecommunications / BSS-OSS domain.

This is a senior hands-on role for an experienced Java engineer who combines solution architecture, technical leadership, and production development. You will join the project first, shape the technical foundation during discovery, and then lead a team of three Full-Stack Java Developers through the MVP delivery.

The role is approximately 50% architecture and technical leadership / 50% hands-on production coding.

About the project & role:

The client is a UK wholesale internet service provider supplying broadband, Ethernet, and connectivity services to resellers and partners.

The project is Phase 1 of a new customer and admin portal and integration platform (BSS/OSS) designed to replace manual and legacy processes and become the first production slice of the client's target platform.

The technical environment includes:

• Java & Spring Boot
  
• React & TypeScript
  
• Microservices and event-driven architecture
  
• PostgreSQL
  
• BPMN / workflow orchestration
  
• OAuth2 / OIDC and Auth0
  
• AWS
  
• Docker and Kubernetes
  
• CI/CD
  
• TM Forum Open APIs
  

Your key responsibilities will include:

• Owning the solution architecture for the client portal and integration platform
  
• Leading the initial technical discovery and helping define the MVP implementation approach
  
• Designing domain models, APIs, integration flows, and event-driven components
  
• Writing production Java / Spring Boot code, particularly for technically complex parts of the platform
  
• Leading and mentoring a team of three Full-Stack Java Developers
  
• Reviewing code and establishing engineering standards and quality gates
  
• Guiding the React portal architecture and UI standards
  
• Designing integrations with external and legacy systems
  
• Making and documenting architecture decisions using ADRs and C4 diagrams
  
• Working closely with DevOps and QA on AWS environments, CI/CD, contract testing, and integrations
  
• Communicating directly with the UK client and third-party technical teams
  
• Presenting technical progress through regular live demos
  

What We Need From You:

• Hands-on experience in the Telecommunications domain, ideally with ISP, BSS/OSS, broadband, order management, product catalogues, or service qualification
  
• Experience with TM Forum Open APIs
  
• 8+ years of commercial Java development experience
  
• 2+ years as a Tech Lead, Solution Architect, or in a similar technical leadership role
  
• Strong hands-on experience with Spring Boot
  
• 3–4+ years of hands-on experience with React / ReactJS and TypeScript
  
• English: Upper-Intermediate (B2+) / Advanced (C1) for direct communication with a UK client
  
• Experience designing and delivering microservice and integration-heavy systems
  
• Strong understanding of Domain-Driven Design (DDD) and event-driven architecture
  
• Ability to review frontend code, guide React application architecture and contribute to frontend development when needed
  
• Practical experience with reliability and integration patterns such as Transactional Outbox, idempotency, retries, and asynchronous processing
  
• Experience designing REST APIs and OpenAPI-based contracts
  
• Experience integrating with multiple external systems and third-party APIs
  
• Practical experience with Camunda, Flowable, or a similar workflow / orchestration engine
  
• Practical experience with OAuth2 / OIDC, Spring Security, and RBAC
  
• Hands-on experience with AWS and containerized environments (EKS or ECS, Docker)
  
• Understanding of CI/CD and modern software delivery practices
  
• Experience with AI-assisted development tools such as Claude Code or Cursor
  
• Experience leading developers through technical planning, code reviews, mentoring, and delivery
  

Nice to have:

• Experience with PostgreSQL, Flyway, or Liquibase
  
• Experience with Kafka or AWS SQS
  
• Experience with Terraform or AWS CDK
  
• Understanding of multi-tenant architectures
  
• Experience with Auth0
  
• Experience with telecom/network systems such as RADIUS, NetBox, or IPAM
  
• Experience with UK broadband ecosystems such as Openreach, PXC, or CityFibre
  
• Experience leading technical discovery phases or architecture spikes
  

What We Offer:

• Official military deferment (reservation);
  
• A competitive salary that appreciates your skills and experience;
  
• Opportunity to join a strategically important pilot team with long-term project prospects
  
• Work on modern cloud-native products that deliver real-world impact
  
• Exposure to AI-powered development practices and enterprise-scale engineering
  
• Open environment where your ideas, technical expertise are valued