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
• AI Frameworks: LangChain, LangGraph, LlamaIndex, LiveKit,Amazon Bedrock, HuggingFace
• Monitoring and Logging: Grafana , Datadog

Experience

Technical Lead

Mar 2024 — Present

Sysco Labs

• Architecting an Enterprise Invoice Management System for scalability and operational efficiency
• Engaging with stakeholders to gather, refine, and translate requirements into technical deliverables
• Leading and mentoring a development pod of 7–8 engineers, driving code quality and best practices
• Designing new system integrations to extend platform capabilities

Java Spring Boot PostgreSQL AWS Microservices

Technical Lead

Jul 2022 — Mar 2024

Estabild

• Served as Lead Backend Developer for a world-class real estate development finance platform
• Designed and built cloud-native backend services supporting complex construction finance workflows
• Drove architectural decisions to ensure system reliability, performance, and compliance

React.js Spring Boot AWS PostgreSQL

Technical Lead

Jul 2021 — Jul 2022

Arimac

• Led architecture and delivery of multiple Telco products for enterprise clients
• Collaborated with product management to translate customer needs into precise technical requirements
• Directed architectural design decisions across the full telco product portfolio

Java Spring Webflux MongoDB Reactive

Senior Software Engineer

Apr 2020 — Jul 2021

Arimac

• Managed the telco development team as the lead engineer on day-to-day delivery
• Led design and development of a national COVID-19 contact tracing solution
• Performed full-cycle requirement analysis, design, and development of a Telco Self-Care platform

Java Spring Boot Telco

Senior Software Engineer

Apr 2019 — Apr 2020

Applova Inc

• Designed and developed a high-performance POS system for a restaurant automation ordering platform
• Architected the POS system to meet demanding performance and reliability requirements
• Streamlined development workflows and mentored junior engineers

Java Spring Boot Restaurant Tech POS

Software Engineer

Apr 2017 — Apr 2019

Applova Inc

• Developed a telco analytical platform handling real-time data processing and reporting
• Contributed mobile development for the POS restaurant ordering application

Java Mobile Analytics

Software Engineer

Jan 2015 — Apr 2017

hsenid Mobile Solutions

• Built a Mobile Money Platform for the Telco domain, supporting financial transactions at scale
• Worked across web and mobile development to deliver end-to-end product features

Java Web Mobile FinTech Telco

Education

Skills

Personal Projects

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

Live in Production

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

TerraWealth

Personal
TerraWealth is an elite, AI-driven asset vault that unifies real estate, fixed income, stocks, and crypto into a single ledger. It replaces static tracking with real-time scenario simulation, empowering you to command your net worth like an institution.

SaaS

AI

FinTech

React

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

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

Other Projects