Mohamed Firnas

Mohamed Firnas

Lead Software Engineer
Sri Lanka
Tamil, Sinhala (Sri Lankan), English
Full-time Hybrid

About Me

Lead Software Engineer with 8+ years of experience designing, building, and scaling backend systems for clients in Sri Lanka, the UK, and Australia. Specialised in Java/Spring Boot microservices, event-driven architectur…

Experience

Lead Engineer

Levein Group · Colombo, Sri Lanka
Aug 2025 - Present · 1 year 2 months

<p>Serve as Technical Lead for a UK healthcare booking platform, owning backend architecture, system design, and end-to-end release and deployment.</p><p> Lead the re-architecture of a legacy monolith into scalable, modern microservices, improving system performance and reliability.</p><p> Manage and mentor a team of engineers, driving code reviews and engineering best practices across the codebase.</p><p> Remain hands-on with core development, critical issue resolution, and architecture-level decision-making.</p>

Lead Engineer

Zone24x7 Technologies · Colombo, Sri Lanka
Feb 2024 - Aug 2025 · 1 year 6 months

<p>Led design, development, and delivery of multiple modules within SFI, Zone24x7's flagship warehousing product, including the Control App, Monitoring Service, License Manager, and Vendor Configuration.</p><p> Provided technical leadership and guided the team through delivery challenges to ship scalable, reliable solutions for an Australian client.</p>

Lead Engineer

EY GDS · Colombo, Sri Lanka
Aug 2022 - Feb 2024 · 1 year 6 months

<p>Contributed to the design, development, and implementation of a microservices-based financial crime tracking and customer risk-rating platform.</p><p> Managed team and sprint activities, conducted code reviews, supported developers, and oversaw CI/CD pipeline builds and delivery.</p><p> Built adaptor services that analysed, filtered, and transformed incoming JSON events for a financial operations platform, routing payloads to queues and Kafka streams for downstream processing.</p><p> Led design and development, managed sprint delivery, and oversaw pipeline builds.</p>

Senior Software Engineer

Sysco Labs · Colombo, Sri Lanka
Jan 2022 - Aug 2022 · 7 months

<p>Worked on the Java migration of a core Sysco supply chain system providing stock-level alerts, demand forecasting, and vendor insights.</p><p> Owned data modelling and table mapping, database and architecture design, Sysco Auth integration, and REST endpoint business logic.</p>

Software Engineer

DMS Software Solutions · Colombo, Sri Lanka
Nov 2019 - Dec 2021 · 2 years

<p>Designed and developed APIs for a centralized user and application-level security solution; conducted code reviews and mentored junior developers.</p><p> Built an automated service delivering confidential data to a partner web service via scheduled file processing and API integration.</p>

Trainee Software Engineer

ITO Automation · Colombo, Sri Lanka
Sep 2018 - Oct 2019 · 1 year

<p>Working as a Trainee Java Developer, responsible for supporting software development and integration activities, including database mapping, application integration, testing, and timely delivery of assigned tasks. Collaborate with the development team to implement solutions, troubleshoot issues, and ensure quality and reliable delivery within project timelines.</p>

Skills

Java Spring Boot Spring MVC Spring Data JPA Spring Batch Spring Cloud Spring Security gRPC REST APIs HTTP Client Apache Kafka RabbitMQ PostgreSQL MySQL Oracle Redis Spring AI MCP Vector Databases RAG Multi-model integration AWS Azure Docker Kubernetes Jenkins ArgoCD Git CI/CD Keycloak OAuth2 Resilience4j Angular Thymeleaf JavaScript HTML CSS Feign Client Kibana Eureka Service Discovery OpenTelemetry Microservices
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