Open to Senior Engineer & Technical Lead roles
Hi, I'm

Lakindu Gunasekara

Senior Software Engineer & Technical Lead

I architect and ship distributed systems at scale — 8+ years building production software with .NET, AWS, and cloud-native architecture.

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.NET / C# AWS Microservices Docker System Design Technical Lead gRPC PostgreSQL
Lakindu Gunasekara
About

Engineer, founder,
systems thinker.

I started building software in 2014 — long before university. What began as client websites and hackathon projects turned into a career building distributed systems, leading engineering teams, and shipping products end-to-end.

I graduated with a First Class degree in Software Engineering from the University of Westminster, then spent six years at 99x as an engineer and Technical Lead — designing microservice platforms for Norwegian clients and owning complex AWS infrastructure at production scale.

Since 2025, I've been at Corzent Edge as Technical Lead, managing a team of 8–12 engineers delivering the Simpology loan platform in Australia. Alongside my day job, I've co-founded four ventures — an eCommerce platform, an SMS gateway, a food ordering system, and a web agency.

I've also contributed to open source via Google Summer of Code, published research at IEEE and ICIIT, and spoken at FOSS Asia.

8+
Years engineering
4
Ventures co-founded
2×
GSoC participant
AWS
Solutions Architect
⚡
Backend & Cloud Engineering
Deep expertise in .NET, C#, and AWS. Built and scaled production systems handling real business workloads.
🏗️
Platform Architecture
Led monolith-to-microservices migrations. Designed event-driven systems using gRPC, SQS, Docker, and AWS-native tooling.
👥
Engineering Leadership
Managed teams of 8–12 engineers. Mentored seniors into leads, improved delivery cadence, and reduced incidents by 90%.
🚀
Entrepreneurial Execution
Founded and shipped four ventures from concept to production — owning tech, team, and business workflows independently.
🎓
Research & Open Source
Published at IEEE 2019 and ICIIT 2017. AWS Certified Solutions Architect. Google Summer of Code participant and mentor.
Technical Skills

Built for the backend,
at home in the cloud.

Deep backend and cloud expertise with working knowledge across the full stack.

Languages & Frameworks
C# .NET Core .NET 6–10 Entity Framework gRPC REST SOAP Python JavaScript Node.js
Cloud & DevOps
AWS EC2 ECS / ECR Lambda API Gateway CloudFront CloudFormation / CDK SQS / SNS RDS / DynamoDB IAM / VPC Docker Jenkins GitHub Actions Nexus Keycloak
Databases & Storage
MSSQL PostgreSQL MySQL DynamoDB MongoDB Redis S3
Architecture & Practices
Microservices Clean Architecture Event-Driven SOLID ACID DRY / KISS Agile / Scrum Kanban ISO 27001
Work Experience

Where I've built things.

From early internships to leading cross-functional teams — a timeline of increasing scope and ownership.

Technical Lead Aug 2025 – Present
Corzent Edge — Simpology · Sydney, AU
  • Lead and manage a cross-functional engineering team of 8–12 developers across delivery planning, execution, and technical direction for the Simpology loan platform.
  • Rebuilt a dissolved sub-team from scratch — re-established onboarding, delivery workflows, and engineering processes.
  • Mentored senior engineers into leadership roles; appointed a new team lead to scale team ownership and reduce single points of failure.
  • Formed and scaled a new engineering team for the SSI domain following organizational transition.
  • Led delivery of critical, high-deadline epics while maintaining sustainable workload and preventing team burnout.
  • Implemented structured 1:1 mentoring and goal tracking, driving measurable career growth across the team.
.NET AWS Technical Leadership Agile Delivery Planning
Software Engineer → Technical Lead Jul 2019 – Aug 2025
99x — Boligmappa · Colombo / Oslo
  • Spearheaded the transition from a monolithic architecture to microservices, improving deployment independence and team scalability.
  • Architected and implemented production systems using .NET, C#, Node.js, Docker, AWS, Jenkins, gRPC, and SQL/NoSQL databases.
  • Reduced support cases by 90% by implementing root-cause solutions and systematically improving system reliability.
  • Led the team through Agile Kanban — orchestrating large initiatives into structured, deliverable work packages.
  • Acted as the primary resource for production incidents, with a strong track record of rapid resolution and forward-looking remediation.
C# / .NET AWS Node.js Docker gRPC Jenkins PostgreSQL MSSQL
Software Engineering Intern Jul 2017 – Jul 2018
99x — UpNorway · Colombo, LK
  • Contributed to the development of upnorway.com — a customised travel journey platform built on Angular, Contentful CMS, and AWS.
  • Collaborated across the team to ship the first production release end-to-end, from build to deployment.
Angular AWS Contentful CMS
Entrepreneurial Work

Things I've built
from zero.

Four ventures — from architecture to launch. Technical lead, co-founder, and builder across all of them.

HuMED Medical Equipment
2021 – Present
Director & Digital Lead
  • Built the company's full eCommerce platform (humed.lk) from scratch — payments, catalog management, and order workflows.
  • Implemented SEO and digital marketing strategies, growing it into a successful online medical equipment retailer.
  • Manage all platforms, analytics, and marketing campaigns end-to-end.
Steadfast Innovations
2018 – 2022
Co-Founder & Technical Lead
  • Designed the end-to-end IT workflow and development processes for the company.
  • Led a development team to build a restaurant food ordering platform focused on pickup workflows.
  • Oversaw architecture, delivery planning, and full product lifecycle management.
Bloomwire
2017 – 2022
Co-Founder & Technical Lead
  • Built and led development of an SMS gateway platform with a self-service user portal.
  • Managed backend architecture, services, and infrastructure setup.
  • Led a small engineering team and coordinated product releases.
SurfEdge
2014 – 2017
Co-Founder & Web Developer
  • Transitioned from accounting into software product development.
  • Built client websites and in-house products using WordPress and custom web solutions.
  • Developed hackathon projects including education sector tools.
Open Source & Projects

Side work worth showing.

Selected open-source contributions and research-backed builds.

☁️
CLocal Azure

A local Azure emulation engine built from scratch — contributed 6 services. My Google Summer of Code project across two consecutive years (2017–2018), developed under the ScoRe Lab open source organisation.

Java Azure Emulation GSoC Open Source
⚡
Serverless DynamoDB Local

Contributed to the official Serverless DynamoDB Local plugin — wrote the full unit test suite and delivered project uplifts improving reliability and test coverage for the Node.js-based AWS toolchain.

Node.js AWS DynamoDB Serverless
🤖
UniOntBot

A university ontology chatbot using semantic NLP for controlled, low-cost text generation. API-based, adaptable to any chatbot framework. Published at IEEE NITC 2019 and well received by domain and industry experts.

NLP Ontology Python IEEE
Read paper
Research & Publications

Peer-reviewed work.

2019
UniOntBot: Semantic Natural Generation based API approach for Chatbot Communication
Gunasekara L., Vidanage K. — National Information Technology Conference (NITC) · IEEE Xplore
View on IEEE Xplore
2017
Workplace Sedentary Behavior Prevention System
Gunasekara L., Karmagam N., Ali S., Bandara V. — International Conference on Innovations in Info-business and Technology (ICIIT-2017) · ISSN 2478-1010
Writing

Thoughts on engineering
and cloud systems.

Selected articles from Medium — covering AWS architecture, .NET performance, and distributed systems.

Nov 2025
Building an Active-Active Multi-Region SaaS Architecture on AWS ECS & Fargate

A deep dive into why multi-region SaaS architecture matters and how to design active-active systems that survive regional failures without downtime.

AWS ECS Fargate System Design
Read on Medium
Sep 2025
Shrinking the Whale: Optimizing .NET Docker Images for AWS ECS

If you've containerized a .NET app and deployed to ECS, you've hit this: images too large, too slow to pull, and too expensive to run. Here's how to fix that.

.NET Docker AWS ECS Performance
Read on Medium
Mar 2024
Embark On Your Cloud Journey — Part 1

An approachable entry point to cloud fundamentals — covering the core concepts, terminology, and mental models you need before going deeper into AWS or Azure.

Cloud AWS Fundamentals
Read on Medium
Aug 2019
GSoC 2019 — Summary

A summary of my Google Summer of Code 2019 experience — what I built, what I learned, and how open-source contribution shaped my approach to engineering.

Open Source GSoC Azure
Read on Medium
View all on Medium
Recognition & Community

Beyond the job title.

Open source contributions, mentorship, and international speaking.

🏆
Google Summer of Code
Participant · 2017 & 2018
🎓
GSoC Mentor
Mentor · 2020
👨‍💻
Google Code-In Mentor
Mentor · 2017 – 2019
🎙️
FOSS Asia Speaker
Speaker · 2019
⚙️
ScoRe Lab Committer
Committer · 2018 – 2023
🏅
AWS Certified
Solutions Architect – Associate
🎓
1st Class Honours
BEng Software Engineering
University of Westminster, UK
📄
IEEE Published
NITC 2019 · ICIIT 2017
Education

Academic foundation.

Bachelor of Engineering (Hons) in Software Engineering
University of Westminster, London, UK
First Class Honours
2015 – 2019
Contact

Let's work together.

I'm currently exploring Senior Software Engineer and Technical Lead roles. If you're building something meaningful and think I'd be a good fit — let's talk.

lakindu1995@gmail.com LinkedIn GitHub Medium