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Hansi Aththanayaka

@hansiaththanayaka

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Senior backend engineer at Allion Technologies who built GC Drive and a near-real-time AWS data lake for Mûve.

Sri Lanka

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What I'm looking for

I'm open to fully remote roles, with UTC+5:30 availability, 4–5 hours of overlap with UK/EU teams, and evening overlap with US East.

At Allion Technologies, I owned backend development for GC Drive, Guy Carpenter's enterprise document-management platform, using NestJS, TypeScript, Node.js, and Azure Blob Storage. I also engineered Parse Filter, which translates frontend query strings into optimized MongoDB queries.

For Mûve, I architected and delivered a production serverless data lake on AWS, replacing legacy batch reporting with near-real-time, sub-second ad-hoc analytics. I also engineered a serverless call-center service with Twilio and AWS Lambda, including retry queues and dead-letter handling.

At Fortude, I built backend microservices and federated GraphQL APIs for Brandix Group workflows, and implemented event-driven communication between services. I also delivered a project management platform and authored QA automation scripts for Infor M3 ERP and related products.

I'm currently building azure-document-pipeline, an open-source serverless document-processing pipeline, and implementing an AWS ETL pipeline. I publish technical articles on Medium about distributed systems, Azure Durable Functions, MongoDB, and Node.js.

Experience

Work history, roles, and key accomplishments

Current

Independent Technical Writer & Open-Source Developer

Current

Self-directed

Nov 2025 - Present (11 months)

Published technical articles on Medium and developed open-source serverless pipelines on Azure and AWS.

TypeScript Durable Functions Azure Blob Storage AWS Lambda AWS Glue S3 Athena EventBridge MongoDB NodeJS

Senior Backend Engineer

Allion Technologies

Aug 2023 - Oct 2025 (2 years 2 months)

Owned backend development for enterprise clients including Marsh McLennan and Mûve, building scalable serverless systems on Azure and AWS.

Software Engineer

Fortude

Jan 2018 - Jan 2023 (5 years)

Built backend microservices and federated GraphQL APIs for Brandix Group, covering manufacturing and operational workflows.

NodeJS NestJS GraphQL Apollo Federation PostgreSQL MongoDB ExpressJS React Azure CI CD Agile Scrum

Education

Degrees, certifications, and relevant coursework

University of Westminster

Bachelor of Engineering, Software Engineering

2017 - 2021

Grade: Second Class Upper Division

Bachelor of Engineering (Hons) in Software Engineering, awarded with Second Class Upper Division, through the Informatics Institute of Technology, Sri Lanka.