Open to senior & lead rolesColombo, Sri Lanka

Sandaru
Shashinda

Currently:Senior Software Engineer

I design and ship enterprise-grade platforms end to end — the architecture, the real-time data, the cloud, and the teams that build them.

See what I have built Email me

0+
Years shipping software: 0M+
Records per table, served fast: 0%+
Unit test coverage: 0
Enterprise platforms shipped

About

I build systems that hold up when the data gets heavy.

Senior software engineer with 5+ years building and leading enterprise-grade, full-stack systems. I combine hands-on engineering across the frontend, backend and cloud with technical leadership, product thinking and cross-functional collaboration — owning delivery end to end and mentoring teams along the way.

Most of my work has been enterprise-grade — telecom BPO, insurance ERP, centralized identity — where a slow query or a leaky permission is not a bug report, it is an incident. I care about the architecture decisions that stop those from happening, and about leaving the engineers around me better equipped than I found them.

Beyond the code

Technical Leadership & Ownership
Stakeholder & Cross-functional Collaboration
Product & Solution Thinking
System Architecture & Scalability
Mentoring & Team Enablement
Problem-Solving & Adaptability
Project Management
Documenting & Knowledge Sharing
Financial & AI Domain Knowledge

Fluent: English
Native: Sinhala

how I stack things

ClientPixel-accurate, fast
Next.js · React · Angular
GatewayOne door in
REST · tRPC · GraphQL · WebSockets
ServicesAsync, decoupled
Nest.js · Spring Boot · RabbitMQ
DataTuned for 10M rows
PostgreSQL · MongoDB · TypeORM
PlatformObservable in prod
AWS · Docker · CI/CD · ELK

< 2s

Every API response on the telecom platform, against schemas holding 5–10 million records.

Experience

Five years, four teams, one consistent trajectory.

From pixel-perfect UIs as a trainee to leading architecture on platforms that carry millions of rows — each step built on the one before it.

Jun 2025 — Present
1 yr 2 mos
Senior Software Engineer
Current
Zoomi Technologies Inc
Jun 2025 — Present · 1 yr 2 mos
- Lead developer on scalable full-stack telecom and SaaS platforms.
- Drove architecture, real-time data handling and cross-team delivery.
- Kept API responses under 2s on tables of 5–10M records.
- Integrated feature-full authentication and authorisation with dynamic user roles.
- Translated complex business needs into architectural designs with cross-functional stakeholders.
- Mentored junior software engineers, providing technical guidance and code review.
Jun 2024 — Jun 2025
1 yr
Software Engineer
Zoomi Technologies Inc
Jun 2024 — Jun 2025 · 1 yr
- Built a solid foundation in RabbitMQ, message queuing and asynchronous messaging.
- Developed microservices fronted by API gateways.
- Owned full auth and authorization flows with dynamic roles.
- Worked hands-on with Docker, CI/CD pipelines and DevOps practices.
- Optimised, designed and managed MongoDB collections and SQL tables.
- Guided and mentored intern software engineers in development best practices.
Jun 2023 — May 2024
1 yr
Associate Software Engineer
EchonLabs (PVT) LTD
Jun 2023 — May 2024 · 1 yr
- Delivered finance, claims and payments modules on a centralized IAM.
- Gained experience with large-scale, enterprise-grade applications.
- Developed and deployed a full-stack ERP system from concept to production for finance and insurance stakeholders.
- Designed solid database architecture.
- Worked across microservices with NestJS and RabbitMQ.
May 2022 — May 2023
1 yr
Trainee Software Engineer
EchonLabs (PVT) LTD
May 2022 — May 2023 · 1 yr
- Implemented pixel-perfect UIs.
- Built the backend for agent hierarchy and subordination.
- Grew across the full stack with strong fundamentals.
- Applied core SDLC principles from requirements gathering through to production deployment.
- Learned and applied Agile/Scrum methodologies in a team-based environment.
Aug 2021 — Mar 2023
1 yr 7 mos
Software Developer
Reifenwechsel Mobil
Aug 2021 — Mar 2023 · 1 yr 7 mos
- Implemented product management and inventory management modules.
- Developed robust, well-architected React and Angular frontends.
- Worked with Docker, CI/CD pipelines, Git and DevOps practices.
- Consistently delivered within deadlines, demonstrating effective time management and reliability.

Selected work

Platforms built for the unglamorous parts — scale, money, identity.

Enterprise systems where correctness and response time are the product. Client work, so the screenshots stay behind NDAs — what follows is the engineering.

FlagshipBPO Platform

Telecommunication ERP

Lead developer on a telecom BPO platform built to stay fast under punishing data volumes — every API call under two seconds against schemas holding 5 to 10 million records.

Lead developer of the project, contributing to every part of the system.
Designed a scalable backend architecture to handle large datasets efficiently.
Used RabbitMQ for message queuing and asynchronous messaging.
Integrated feature-full authentication and authorisation with dynamic user roles.
Integrated real-time data handling with WebSockets.
Unit test-driven development with 80%+ coverage using Jest.
Implemented logging and monitoring with the ELK stack.
Handled AWS, cloud-native development and CI/CD pipelines.

< 2s

API response on 10M-row tables

Stack

Next.js
Nest.js
PostgreSQL
RabbitMQ
WebSockets
AWS
ELK
Jest

Identity & Finance Platform02

IAM Insurance System

A centralized identity platform with finance and general-insurance claims built on top — invoices, receipts, payments and double entries, all under one roof.

Multi-system

Unified under one IAM

Built finance modules for single and bulk invoices, receipts, payments and double entries.
Built modules for general insurance claim intimation and processing.
Designed solid database architecture for payments and claims.
Worked with microservices architecture using Nest.js and RabbitMQ.
Developed and scaled modular multi-systems, integrating them into a centralized IAM.
Developed advanced dynamic forms.
Implemented full auth: roles with permissions, 2FA, OAuth, JWT, AuthGuard and PermissionGuard.

React.js
Nest.js
MongoDB
PostgreSQL
Microservices
RabbitMQ

Enterprise Resource Planning03

ERP Insurance System

An insurance ERP with a complete notification dashboard — single and bulk sends, push delivery via OneSignal — sitting on top of a deep agent hierarchy.

Bulk + push

Notification dashboard

Created a complete notification dashboard for single and bulk notifications, with push delivery via OneSignal.
Handled the backend for agent hierarchy and subordination.
Implemented pixel-perfect UIs.
Handled advanced database queries to fulfil complex requirements.

React.js
Nest.js
PostgreSQL
TypeORM
OneSignal

Product & Inventory Suite04

CMS Platform

A Spring Boot microservices platform behind an API gateway, hardened with circuit breakers so one failing service never takes the whole suite down.

3 services

Behind an API gateway

Implemented product management and inventory management modules.
Handled the full authentication and authorisation flow with dynamic user roles.
Implemented microservices architecture with an API gateway and 3 services.
Implemented circuit breaking with Resilience4j.

Angular
Spring Boot
Java
PostgreSQL
Hibernate
Resilience4j

Toolkit

The whole stack, end to end.

Not a list of everything I have touched — these are the tools I have shipped production systems with, and would happily be handed a pager for.

Frontend

Interfaces that stay fast and pixel-accurate

React
Next.js
Angular
TypeScript
HTML & CSS
Tailwind

Backend

APIs and services built to hold up

Node.js
Nest.js
Express.js
Spring Boot
Java
.NET / C#

Data

Schemas designed for scale, then tuned

PostgreSQL
MongoDB
SQL
TypeORM
Hibernate
Query tuning

Architecture

Distributed systems that degrade gracefully

Microservices
RabbitMQ
API Gateway
REST
tRPC
GraphQL
WebSockets
Resilience4j

Cloud & DevOps

From local commit to production

AWS EC2
AWS Lambda
S3
CloudWatch
Docker
CI/CD
Git
ELK Stack

Security & Quality

Auth done properly, tests that mean something

RBAC
2FA
OAuth
JWT
Jest
Playwright
JUnit 5

Background

Physics, maths, and a habit of competing at things.

B.Sc. Physical Science

2019 — 2023

University of Sri Jayewardenepura

Computer Science, Mathematics & Physics

Secondary & Higher Secondary Education

2009 — 2017

Mahanama College, Colombo 3

GCE A/L Maths Stream · GCE O/L with 8 A passes

Qualifications

Certified Database Administrator
Certified Full-Stack Software Developer
GCE Advanced Level — Maths Stream
GCE Ordinary Level — 8 A passes

Outside the terminal

01
National Astronomy & Astrophysics Competition
Two-time gold medalist
02
School Cricket
U15 and U17 A-Team player, Mahanama College
03
University Badminton Team
Team member, University of Sri Jayewardenepura
04
Event Organizing Committee
Head of the university faculty committee

Two gold medals in national astrophysics, a decade of competitive cricket and badminton, and a faculty committee to run — the same appetite for a hard problem that shows up in the work.

Available

Have a system that needs building properly?

I am open to senior and lead engineering roles, and to consulting on architecture for teams whose data has outgrown their first design. Happy to talk either way.

Start a conversation

shashinda.98@gmail.comCopied

Phone

+94 71 246 4859Copied

in/sandaru-shashindaCopied

SandaruShashinda