Company Description ExcelaCom Technologies is an independent software vendor specializing in BSS/OSS solutions and services for Tier 1 to Tier 3 next-generation communications providers across multiple regions. The company supports communications service providers in addressing the demands of today’s converging telecom market through a comprehensive portfolio of offerings. ExcelaCom delivers system integration, application development, testing, and full-scale outsourcing services tailored to telecommunication industry needs.

Its global operations are driven by experienced consultants, analysts, and technology specialists based in the US, Europe, and Southeast Asia. For more information, please visit http://www.excelacom.in.

Role Description : Senior Architect (Hands-On) — Java / Distributed Systems – Telecom Domain – Product Development Exposure

About the role

We are hiring a hands-on Senior Developer/Architect for our product engineering team. This is a deliberately senior, deeply technical role — not a management or oversight position. You will own architecture and write code: making the hard design calls, then rolling up your sleeves to prototype, refactor, and ship them alongside the team.

The distinction that matters most to us: we are looking for an architect, not a task executor. You should be comfortable being handed an ambiguous problem and a real codebase, forming your own point of view, and defending it — rather than waiting for work to be broken down and assigned to you.

Technical skills

- Core: Java (8/11/17+), Spring Boot / Spring ecosystem, microservices architecture,



REST API design.
- Messaging & streaming: Kafka/RabbitMQ
- Data: ORACLE, Relational databases (JPA/Hibernate) and NoSQL/in-memory stores (MongoDB, Redis) — including when to use which.
- Distributed systems: service boundaries, distributed transactions, resilience patterns (Circuit Breaker, Bulkhead, Rate Limiter, Time Limiter), caching strategies, handling large datasets, cross-boundary exception handling.
- Security: OAuth2 / JWT authentication and authorization flows.
- Cloud & delivery: container orchestration and AWS compute models (e.g. EKS vs. ECS vs. Fargate), CI/CD.
- Design: applied design patterns, system design, and the judgment to know when to split a component and what a positive service boundary looks like.

What you'll do

- Own architecture end-to-end — drive design decisions and see them through implementation, taking responsibility from the whiteboard to production.
- Stay hands-on in the code — actively build, not just direct. You'll write production code, prototype approaches, and pair on the hard parts.
- Work confidently in existing codebases — navigate unfamiliar code, identify architectural and implementation limitations, and propose, prototype, and execute refactoring.




- Formulate and evaluate solutions independently — weigh trade-offs, choose a direction, and clearly articulate the reasoning behind it.
- Defend and evolve technical decisions — present your rationale with confidence, engage critique, and know how you'd measure whether a design succeeded.
- Set the technical bar for design patterns, service boundaries, resilience, and system quality across the product.

What we're looking for

- Domain knowledge – you must worked on Telecom domain and has good exposure in BSS/OSS components
- Hands-on seniority — you make both architectural and implementation decisions, and you still code.
- Codebase ownership — you can drop into existing code, spot what's structurally wrong, and lead the refactor to fix it.
- Independence — you formulate solutions, reason through trade-offs out loud, and confidently defend your decisions under scrutiny.
- Judgment & ownership — you take end-to-end responsibility, from design through implementation, and own the outcome.
- Confidence — for this role, seniority shows up as technical confidence and engineering judgment, not years or titles.

If you're passionate about building scalable telecom platforms and making architectural decisions that matter, we'd love to hear from you. ? Send your profile to: [email protected]/ (phone hidden)

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📌 Senior Developer / Architect (Telecom BSS/OSS) (Chennai)
🏢 ExcelaCom Technologies
📍 Chennai