Senior Software Engineer · Technical Lead

Aruna
Wickramasinghe.

I turn ambiguous product goals into reliable web, mobile, cloud, and connected systems, from Go and .NET services to accessible product interfaces.

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Associate Technical Lead, Karbon
Focus
Product · Platform · Connected systems

Selected work

Production systems that best represent my work across connected products, backend platforms, accessibility, and technical leadership.

Selected case studies

About

I am a hands-on senior software engineer and technical lead with nine years of production experience. I work across architecture, backend, web, mobile, accessibility, and observability to turn unclear product goals into systems teams can ship and operate. I use AI-assisted engineering to move faster while keeping human ownership of product decisions, verification, and release safety. I continue to build ipark.fi, CRLO, and JustInvoice.

Currently building

Aruna Wickramasinghe

Experience

  1. 2026 - Present

    Associate Technical Lead

    Liquid Labs (Karbon) - Remote (Sri Lanka)
    • Lead hands-on delivery across the Karbon platform, turning product goals into scoped, shipped changes across web applications and services.
    • Use agentic coding workflows for implementation, review, and verification while retaining human ownership of architecture and release decisions.
    • Maintain and evolve interconnected Next.js, Ember, and .NET applications, keeping a multi-framework stack coherent and reliable.
    • Mentor engineers and own key architectural decisions, raising code quality and delivery consistency across the team.
  2. 2022 - 2026

    Technical Lead

    Gapstars (Progresity - Rotterdam, NL) - Remote (Sri Lanka)
    • Led a distributed engineering team building the Progresity platform, owning architecture, code review, and delivery cadence over four years.
    • Delivered WCAG 2.1 AA-compliant Angular applications, embedding accessibility into the design system so compliance held as the product scaled.
    • Introduced AI-assisted engineering through hands-on R&D, pairing team adoption with code review and established quality gates.
    • Grew the platform from early features to production use across public-sector clients, balancing new delivery with long-term maintainability.
  3. 2024 - Present

    Co-Founder & Architect

    ipark.fi - Helsinki, Finland - Remote (Sri Lanka)
    • Co-founded the company and architected its EV charging management platform (CSMS) end to end, from protocol layer to customer portals.
    • Built an OCPP 1.6-compliant charging station management system that interoperates with real EV charger hardware.
    • Engineered a Go backend processing 1,000+ daily charging events, instrumented with OpenTelemetry and Grafana for observability.
    • Designed Next.js portals for charger and site management, now piloting with operators in Helsinki and Turku.
  4. 2019 - 2022

    Senior Software Engineer

    IDS NEXT - Colombo, Sri Lanka
    • Migrated legacy monolithic systems to .NET Core, modernizing the codebase for scalability and easier maintenance.
    • Optimized core APIs to cut response times by 40%, improving responsiveness for a hotel ERP used by 220+ hotel chains worldwide.
    • Implemented complex hospitality business logic and third-party integrations to meet the real operational needs of hotel clients.
  5. 2017 - 2019

    Software Engineer

    Zillione - Colombo, Sri Lanka
    • Developed enterprise ERP and POS solutions for major clients including Dialog Axiata, shipping systems into live production.
    • Built a mobile POS application that cut in-store counter queues by moving SIM and device sales onto handheld devices.
    • Integrated third-party payment gateways for secure online transactions, including a public payment system for the University of Colombo.

Engineering range

The tools and disciplines I rely on to design, ship, and operate production systems, not an inventory of every library I have used.

Languages

  • TypeScript
  • Go
  • C#
  • SQL

Product engineering

  • React
  • Next.js
  • Angular
  • React Native
  • Expo

Backend & data

  • .NET Core
  • Convex
  • PostgreSQL
  • Redis

Platform & cloud

  • Azure
  • AWS
  • Docker

Reliability

  • OpenTelemetry
  • Grafana
  • Sentry
  • Datadog

Specialisms

  • OCPP 1.6
  • WCAG 2.1 AA
  • AI-assisted engineering

Academic & research

Education

BSc in Information Technology

2019
SLIIT (Sri Lanka Institute of Information Technology)

Covered software engineering, database systems, algorithms, distributed systems, mobile development, machine learning, software architecture, security, user experience, and programming fundamentals throughout coursework.

Research & publications

An Enhanced Networked Traffic Light System and Traffic Flow Prediction Using Machine Learning

2019
IEEE

A smart traffic light system using Google Maps and cameras with neural networks to manage congestion across six junctions. Two algorithms process real-time video and traffic data: one reduces congestion locally, another optimizes network-wide flow, exposed through a REST endpoint for optimal routing recommendations.

Read paper

Available for interesting problems

Let’s build
something.

Looking for a senior product or platform engineer, building a connected product, or want to talk through a difficult system decision? My inbox is open.

[email protected]