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Sithara WanigasooriyaSW
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Sithara Wanigasooriya

@sitharawanigasooriya

Senior software engineer specializing in distributed systems, DevOps, and cloud-native apps.

Sri Lanka
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What I'm looking for

I seek roles in cloud-native, distributed systems or platform teams where I can lead scalable architecture, improve reliability, and apply AI automation while working in Agile environments with opportunities for technical leadership.

I am a senior software engineer with 5+ years building distributed systems and multi-tenant SaaS platforms, focused on backend performance, reliability, and automation. I have led small engineering teams, delivered high-uptime services, cut API latency, and implemented multi-tenancy and CI/CD practices that improved release cadence and stability.

My hands-on experience spans Spring Boot microservices, Kubernetes, gRPC, event streaming, observability, and AI-assisted automation (OpenAI GPT, Google Document AI). I prioritize scalable architecture, test automation, and secure operations to drive measurable business outcomes such as reduced manual effort, lower latency, and robust disaster recovery.

Experience

Work history, roles, and key accomplishments

SE
Current

Senior Software Engineer

Self Employed

Jul 2024 - Present (1 year 2 months)

Designed Kubernetes-based Spring Boot microservices and gRPC paths to reduce API latency ~40% and implemented AI-assisted invoice parsing to cut manual entry by ~75%, delivering multi-tenant POS & SaaS platforms with 99% uptime.

CL

Associate Technical Team Lead

CodeGen International (Pvt.) Ltd

Jan 2023 - Jun 2024 (1 year 5 months)

Led a 5-engineer product team to achieve ~90% on-time SaaS feature delivery, implemented RBAC with audit trails reducing unauthorized access ~98%, and established a disaster recovery framework cutting downtime ~99% in failover tests.

CL

Senior Software Engineer

CodeGen International (Pvt.) Ltd

Jan 2022 - Dec 2022 (11 months)

Improved cross-service search performance ~60%, implemented CI/CD pipelines that sped releases ~75%, and led security hardening efforts reducing vulnerabilities ~70% while enforcing GDPR-ready logging and PII redaction.

CL

Software Engineer

CodeGen International (Pvt.) Ltd

Feb 2020 - Dec 2021 (1 year 10 months)

Optimized InfluxDB time-series storage to cut storage costs ~80%, built a Workflow Management System with BPMN 2.0 flows, and achieved 80%+ automated test coverage to improve integration reliability.

Education

Degrees, certifications, and relevant coursework

Staffordshire University logoSU

Staffordshire University

Master of Science, Computer Science in Business Computing

2022 -

Pursuing an MSc in Computer Science in Business Computing part-time, expected to complete in December 2025.

University of Moratuwa logoUM

University of Moratuwa

Bachelor of Science (Engineering) Honours, Computer Science & Engineering

2015 - 2020

Completed a BSc Engineering (Hons.) in Computer Science & Engineering with graduation in January 2020.

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Sithara Wanigasooriya - Senior Software Engineer - Self Employed | Himalayas