Sajith Neyomal Email & Phone Number

Colombo, Western Province, Sri Lanka

Colombo, Western Province, Sri Lanka

Colombo, Western, Sri Lanka

Worked for Harver, Netherlands via Gapstars.

Colombo, Western, Sri Lanka

Worked for Harver, Netherlands via Gapstars.

Amsterdam, North Holland, Netherlands

Harver stands at the forefront of volume hiring solutions. Leading organizations like Foundever, Booking, McDonald's, and Teleperformance use Harver to select candidates, empowering them to secure top-tier talent.My role involves implementing the functional requirements of a cloud-based serverless architecture that handles 1 million lambda invocations daily and overseeing an external API processing nearly 600K daily requests.AchievementsImproving the overall integration layer architecture- Fine-tuning lambdas to significantly enhance performance.- Improving the asynchronous and decoupled nature of the integration layer using SQS and EventBridge by prioritizing fault tolerance and scalability with custom retry and rate-limiting mechanisms.- Spearheaded the design and development of the queueing layer between internal services and the integration layer to facilitate interoperability between SQS and RabbitMQ.Improving the overall Harver External API layer architecture- Spearheaded the revamp of API with performance improvements, new features, and system maintainability.- Allowing the organization to achieve ISO standards by changing the API to adhere to the security guidelines and other practices.- Preventing overuse of the API by building a custom rate-limit solution, which prevented the exhausting of internal servers and DBs.Responsibilities- Contributing to the architectural decisions of the integration and API layer while investigating and implementing improvements and new features to improve performance and reliability.- Using testing (TDD/ BDD/ Integration/ E2E) as a central part of the development process up to the delivery.- Helping to maintain code quality by being involved in code reviews and release processes.- Working with multiple teams across multiple internal services to deliver organization goals.- Participate in knowledge sharing with the team in expertise areas, conduct pair and mobbing sessions, and train new team members.

Amsterdam, North Holland, Netherlands

AchievementsImproving the overall integration layer architecture- Building different custom integrations tailored to customer needs and marketplace integrations, which avoided duplicate work and significantly reduced delivery time.- Reduce build time and package sizing using different JS ecosystem tools and concepts like child processes in NodeJS.- Improving developer experience and efficiency by building internal custom wrappers around SDKs and tools. Improving the overall API layer architecture- Reducing deployment time by re-writing Jenkins scripts and adding build tools like Webpack.- Improving the performance of the overall API by fixing memory leaks and reconfiguring the incorrect usage of packages.Responsibilities- Using AWS-based services to improve the integration layer's synchronous and asynchronous performance, reliability, scalability, and fault tolerance.- Delivering new product capabilities and customer value while following agile practices.- Documenting the API layer using Redoc and contributing to other documentation across the platform.Tech Stack - MERN (TS), AWS (Lambda, SQS, EventBridge, S3, API Gateway, ALB, CloudWatch, SNS), MongoDB, RabbitMQ, Terraform, Docker, Jenkins, Cucumber

Colombo District, Western, Sri Lanka

An E-Learning platform with fully functional course management and payment system integrating external services like PayHere and Vimeo, which ran on top of AWS serverless architecture.Achievements- Spearheaded a team of 4 developers to deliver the product while being in contact with the client and matching the requirements to the features and architecture of the system.- Designing a serverless architecture-based backend using AWS cloud services.- Building a CI/CD pipeline which automated the release process for both the backend and frontend applications.Responsibilities- Maintaining the quality of the codebase through reviews and implementing best practices tailored to the team.- Improving the architecture of the whole application with cost reduction and increased performance in mind.- Contributing to the React-based client and admin application.- Maintaining and keeping the system updated with the latest standards.- Managing the AWS cloud environment.Tech Stack - MERN (TS), React, Redux, MongoDB, AWS services (Lambda, SQS, DynamoDB, SNS, S3, CloudWatch, CloudFormation, Cognito, KMS, Secret Manager, Route53, CloudFront, etc.), Swagger

Colombo, Sri Lanka

- Delivering customer expectations by engineering a pilot project for a student management system.- Architecture, design, and development of the back and front ends.- Developing an IOT-based solution using RFID and NFC technologies.- Maintained the code base and did code reviews of the other developers.Tech Stack - Jersey (JAX-RS), Maven, Hibernate, HikariCP, Ehcache, ReactJS, GCP (Compute Engine)

Sri Lanka

- Research on cross-platform AR and VR in mobile devices using Viro React.- Being part of the Tadestr team, which developed a mobile application where users can find people to do their daily tasks by hiring available professionals.- Being part of the Yabbi team, which developed a mobile application where users can rent the things they own. Engaged in redesigning, updating, and developing the application.Tech Stack - JavaScript, React Native

Bsc (Hons) In Computing, Computer Science, First Class Honours, Batch Top, Gpa 4.0, Gold Medalist

Higher Diploma, Computer Based Information Systems, Gpa 4.0, Gold Medalist

Diploma, Computer System Design, Gpa 3.97, Batch Top

Certificate Course, Computer Science, Overall Marks - 71/100

Certificate Course, Graphic Designing, Overall Grade - A

Studied Adobe Photoshop, Adobe Illustrator and Adobe InDesign

English Language Course, English, Overall Grade - A

Activities and Societies: Member of Speaking Club

High School, Advanced Level (Mathematics), Grade 12 & 13

Activities and Societies: School Educational Software Group Projects - Provincial Competition (Winning Team) [2011] G.C.E. Advanced level.

High School, Ordinary Level (English Medium), Grade 1 To 11

Activities and Societies: Vice President of Astronomical Club [2008-2009] G.C.E. Ordinary Level [2009] - Sinhala Language and Literature.