Damitha Perera
Iโm Damitha Perera, a Senior Software Engineer & Full-Stack Developer from Sri Lanka with 7+ years of industry experience, delivering software solutions for clients in Europe, Australia, and Asia.
I focus on creating secure, maintainable, and scalable systems โ from backend architecture and databases to cloud deployment and frontend development. My experience spans SaaS, AI-driven apps, FinTech, HealthTech, and E-commerce platforms.
๐ป Tech I Work With
Backend: Node.js (Express/NestJS), Ruby on Rails, Python (FastAPI)
Frontend: Angular, React, Next.js, TailwindCSS
Databases: PostgreSQL, MySQL, MongoDB, DynamoDB, Redis
Cloud & DevOps: AWS (Lambda, S3, EC2), Docker, Serverless, CI/CD pipelines
Other: Microservices, REST APIs, WebSockets, OpenAI/GPT, Stripe, Firebase
๐ What I Do Best
Build reliable backend services, APIs & cloud-native microservices
Architect scalable systems using AWS & modern DevOps practices
Develop full-stack applications from UI to deployment
Lead and mentor developers while maintaining clean code standards
Deliver solutions for SaaS, AI, FinTech, HealthTech & E-commerce
โ Available for Remote & Freelance Projects โ Letโs build something great together!
Employment and project experience
Senior Software Engineer 99X Pvt Ltd
Sep 2022 โ Present
Developed scalable backend systems using Node.js, Ruby on Rails & Python (FastAPI)
Integrated AI-powered solutions using OpenAI and AWS cloud services
Mentored interns and contributed to Agile sprints, code reviews, and technical design
Worked on enterprise products using AWS Lambda, MySQL, MongoDB & Angular
Freelance Ruby on Rails DeveloperSwivel Group.
Dec 2024 โ Feb 2025
Built and maintained Ruby on Rails applications for client-facing platforms
Optimized backend performance, database queries, and implemented API-level security
Collaborated with product managers, designers, and remote developers
Software Engineer / Senior Software Engineer KeenEye Solutions Pvt Ltd
Feb 2020 โ Sep 2022
Developed web-based platforms using NestJS, AWS, MongoDB & MySQL
Built microservices, backend APIs, and desktop apps using Electron.js
Mentored junior developers and participated in system architecture decisions
Associate Software Engineer / Software Engineer โ Ellipsis Pvt Ltd
Built and maintained web applications using Node.js, Angular (2 & 4), MongoDB, and MySQL
Integrated payment services (Stripe, eWAY) and Firebase
Participated in full SDLC including design, development, and deployment
Skills
Experience Level
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Education
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Industry Experience
Cedar Electronics Corporation is a global supplier of connected automotive and consumer electronics solutions and home of industry-leading brand Cobra Electronics. Cedarโs ever-expanding family of products includes connected radar/laser detectors, smart dash cams, CB and marine radios, portable power solutions, driver alert applications and more. With the latest in intelligent, sensor-based devices and a network platform to capture and share real-time alerts fueled by a rapidly growing driver community.
mobile-technologies : Kotlin & Swift
web-technologies : Vue.js
back-end technologies : Nodejs
Database : DocumentDB & MySql
Server : AWS
Klapper is a social media e-commerce platform that enables users to learn more about the product and convert them into paying customers. Project goals are Create a social platform on the internet to review and promote products and services, Create a secure platform to buy and sell products and services & Motivate creative content creators. My roles are backend development and Scrum Master.
mobile-technologies : React Native
back-end technologies : Nest.Js, microservices
Database : MongoDB, Redis
Server : AWS
Health care education platform. where navigate work through the process education them on the process work and what are the option and track. Doctor, Navigator and patient has their own logins. Doctor can be assign to a clinic and navigator has the option to create a patient and assign to a relevant doctor. This includes online calling as well. I was outsource for another company as a backend developer. Mainly involved in bug fixing.
web-technologies : React.js
back-end technologies : AWS Lambda Functions with NodeJS Rest API, AWS Cognito for Authentication
Database : MySql (using TypeORM)
Server : AWS,
Call Server : Twilio
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