[Hiring] Java Tech Lead / Solution Architect @Aimprosoft

Role Description

This is a remote position. AIMPROSOFT is looking for a Java Tech Lead / Solution Architect (React, Telecom) on a contract basis (≈ 4+ months) for 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

Qualifications

• 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

Requirements

• 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

Benefits

• 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 and technical expertise are valued