Sajith Vijesekara

I’m a Seasoned Software Technical Lead with over 10+ years of experience in backend development and software architecture, including the last 4 years leading engineering teams and delivering high-impact solutions for enterprise clients.

Throughout my career, I have successfully designed, developed, and deployed multiple enterprise-grade applications across diverse industries such as Telecommunications, E-commerce, Construction Finance, Education, Healthcare, and Restaurant Services. I specialize in Java, Spring Boot, Hibernate, Node.js, and React, with deep proficiency in building scalable microservices and APIs.

My cloud expertise spans AWS and Azure, where I’ve built and deployed cloud-native applications leveraging Docker, Kubernetes, and serverless architecture. I’m proud to be recognized as an AWS Community Builder and hold the Certified Kubernetes Application Developer (CKAD) certification.

I bring a strong understanding of software engineering best practices , DevOps, and agile methodologies, and I thrive in leading cross-functional teams to turn complex technical requirements into clean, maintainable, and performant solutions.

Expertice Areas :

• Telecommunication
• E-commerce
• Construction finance
• Education
• Restaurant
• Healthcare

Major specialized areas

• Backend: Java , Node.js, Python , GoLang
• Frameworks : Spring, Nest, Fast API
• Cloud Platforms : AWS, Azure, Gcp
• Orchestration: Docker, kubernetes, Terraform
• Frontend: React
• Monitoring and Logging: Grafana , Datadog

Experience

Technical Lead

Sysco Labs

Designing an Enterprise Invoice Management System, ensuring scalability and efficiency
Engaging with customers to gather and refine requirements
Conducting code reviews to maintain code quality and best practices
Designing new integrations to enhance system capabilities
Leading a development pod of 7–8 developers, providing technical guidance and mentorship.

Java

Spring

Postgresql

AWS

Mar 2024 - Present

Technical Lead

Estabild

Lead Backend Developer
Design And Developed World leading Real estate development software

ReactJs

Spring

AWS

Jul 2022 - Mar 2024

Technical Lead

Arimac

Leading Telco Products
Collaborating with product line management to identify , refine and translate customer needs into concrete technical requirements
Leading architectural tasks and design for telco products

Java

Webflux

MongoDb

Jul 2021 - Jul 2022

Senior Software Engineer

Arimac

Managed the telco Development team
Play lead developer role for design & developing contact tracing solution for covid-19’s patients.
Performed requirement analysis, design & development of Telco Selfcare solution

Apr 2020 - Jul 2021

Senior Software Engineer

Applova Inc

Design & developed POS system for restaurant base automation ordering platform.
Design & architecture pos system to cater performance requirements.
Streamline project development work flows with junior developers.

Apr 2019 - Apr 2020

Software Engineer

Applova Inc

Responsible of development process of telco analytical platform.
Act as Mobile Development Role for POS application for restaurant ordering system.

Apr 2017 - Apr 2019

Software Engineer

hsenid Mobile Solutions

Responsible of development process of a Mobile Money Platform for Telco Domain.
Worked as Web & Mobile Developer

Jan 2015 - Apr 2017

Education

Skills

• Enterprise Architecture
  Translating complex business requirements into distributed, event-driven systems with high throughput and long-term scalability across telecom, e-commerce, healthcare, and finance. Specialised in domain-driven design and decentralized architecture patterns that keep large systems maintainable as they grow.
• Microservices & API Engineering
  Designing contract-first, loosely coupled microservices that enable independent scaling, high availability, and fault isolation in production environments. Deep expertise in building decentralized service meshes and API ecosystems that handle millions of requests without degradation.
• Cloud-Native Development
  AWS Community Builder and CKAD-certified, with hands-on experience architecting high-throughput, resilient cloud workloads using Kubernetes, Terraform, and serverless on AWS and Azure. Focused on engineering infrastructure that is observable, cost-efficient, and capable of scaling under real production load.
• AI-Driven Engineering
  Designing and shipping production-grade AI systems — from LLM-powered workflows and autonomous agents to intelligent data pipelines — that turn business logic into measurable outcomes. Focused on embedding AI at the architecture level, not as a layer on top, to build systems that are scalable, explainable, and operationally sound.
• Engineering Leadership
  Leading cross-functional teams as an AI-focused engineering manager who bridges strategic business objectives and technical execution — from architecture decisions through to delivery. Proven in transforming ambiguous product requirements into precise engineering roadmaps, team standards, and high-throughput delivery pipelines.

Personal Projects

Side ventures I actively build and maintain independently, alongside my full-time engineering work.

SimpleHR.io

Personal
SimpleHR is an AI-powered HR platform that automates candidate management, interview scheduling, and recruitment workflows to streamline hiring processes. By leveraging intelligent agents, it enhances decision-making and improves collaboration across HR teams

Saas

React

Spring

AWS

Univox.io

Personal
Univox is a universal AI-powered platform that automates routine voice calls with customers using intelligent agents. It streamlines daily communication tasks, improving efficiency and freeing up human resources for higher-value work

Python

AI

aws

K8

Movie Booking Platform

Personal
Built a Flutter-based app for movie ticket booking with features like latest release listings and secure payments. Focused on delivering a smooth user experience with an intuitive and responsive interface

Mobile

Flutter

Android

Ios

OneHire.lk

Community
OneHire.lk is a leading platform connecting IT professionals with the latest job opportunities and industry insights worldwide. Whether you're an experienced expert or just starting out, it helps you find the perfect role aligned with your skills and career goals

React

spring

aws

microservices

FTracker

Personal
Ftracker is your automated personal wealth manager. It provides clarity and control over your finances by securely tracking and categorizing all your expenses, transforming complex budgeting into an effortless experience.

React

spring

aws

microservices

OFleet

Personal
AI-driven B2B SaaS platform that optimises proprietary transportation systems for SMEs — intelligently managing drivers, vehicles, and multi-stop routing to cut operational overhead.

SaaS

AI

Spring

React

Bopo & Friends

Personal
Bopo & Friends is a fun mobile game that helps kids identify and remember everyday objects through interactive gameplay, improving memory and cognitive skills in a playful way.

Mobile

Flutter

Game

Kids