Available for freelance web development

Full-Stack Engineer & Associate Technical LeadScalable, Cost-Optimized Cloud Platforms

Four+ years building enterprise B2B SaaS at Velaris — growing from a 2021 intern to technical leader. I work end-to-end across React, Node.js and AWS, with a focus on performance, reliability and zero-downtime platforms.

Portrait of Padma Gnanapriya

Career

From intern to engineering leadership

A focused journey at Velaris — growing through full-stack delivery into a leadership role centred on enterprise integrations and performance at scale.

  1. Associate Technical Lead · Velaris

    CurrentJun 2026 — Present

    Leading a full-stack squad — owning planning, estimation, code review and delivery while raising the engineering quality bar.

    • Own platform reliability and observability — building real-time monitoring with AWS SQS failure-queue analysis, automated Slack alerts, and custom CloudWatch alarms to catch processing failures and delays instantly.
    • Lead a full-stack engineering squad through task planning, technical discussions, code reviews, and feature delivery.
    • Designed and implemented an event-tracking process that identified and resolved 500+ data-quality issues across the platform.
    • Resolved critical AWS SQS processing issues for enterprise customers and optimized core event handlers to reduce dependency on costly third-party APIs.
    • Reduced cloud costs by eliminating duplicate AWS Secrets Manager requests across 45 client environments.
    • Improved platform security and stability by identifying and removing high-risk legacy scripts.
    • Mentor engineers on system architecture, coding standards, and advanced Git workflows.
  2. Senior Software Engineer · Velaris

    Jun 2024 — Jun 2026

    Led performance engineering and enterprise integrations end to end across React, Node.js and AWS.

    • Fixed a major six-month-old performance bottleneck in the legacy system by redesigning the data- synchronization process — improving throughput 11x and reducing external API calls by 99%.
    • Improved real-time synchronization speed in the Intercom integration by 3x, better supporting large enterprise customers.
    • Built a complete AWS SES email infrastructure from scratch in three days, supporting 60,000 emails per run with zero failures.
    • Drove end-to-end development of enterprise data integrations (Stripe, Mixpanel, Snowflake), using AI tooling to accelerate delivery by 3–4 days.
    • Created reusable coding patterns and best practices adopted across the company, improving maintainability and data quality.
    • Improved platform security by resolving critical issues from external security audits and completing internal security challenges.
  3. Software Engineer · Velaris

    Jul 2023 — Jun 2024

    Owned email deliverability and engagement features on a serverless AWS stack.

    • Built an email analytics dashboard with user-engagement tracking and email-verification workflows to improve deliverability.
    • Implemented one-click unsubscribe aligned with Gmail requirements, improving email reputation and delivery performance.
    • Researched and developed the platform's bulk email verification to reduce email-reputation issues.
    • Reduced infrastructure costs by migrating core services to AWS Lambda and moving event-handler templates to a serverless architecture.
    • Managed production deployments and release processes — including release notes, documentation, and testing — to maintain software quality.
    • Delivered technical KT sessions, supported teammates, and wrote thorough documentation to aid development and maintenance.
  4. Associate Software Engineer · Velaris

    Jul 2022 — Jul 2023

    Designed and maintained microservices for new platform services.

    • Designed and maintained backend microservices focused on scalability, reliability, and maintainability.
    • Researched and built marketing email systems and improved project-management features to resolve issues in our existing Gmail-integrated service.
    • Replaced repetitive QA work with Python and Jupyter Notebook test scripts for cases previously considered impossible to automate, saving the QA team significant time.
    • Reviewed code and mentored teammates on coding standards and Git best practices.
  5. Software Engineer Intern · Velaris

    Mar 2022 — Jul 2022

    Where the Velaris journey began.

    • Developed web applications using React, Redux, Node.js, and AWS in an Agile environment.
    • Built REST APIs and managed application data with PostgreSQL.
  6. Software Engineering Trainee · Intahub (Pvt) Ltd

    Sep 2021 — Feb 2022

    Built proof-of-concept systems across platforms.

    • Built POC systems for cloud and desktop environments using Angular, Express.js, and Bootstrap.
    • Developed mobile applications using Angular and the Ionic Framework.
  7. Software Engineer Trainee · SoftVessel (Pvt) Ltd

    Feb 2021 — Jul 2021

    First role — focused on pixel-perfect frontend delivery.

    • Built a student registration system and dashboard using React, Redux, Node.js, GraphQL, and MongoDB.
    • Automated scheduled email notifications using AWS SES.
    • Developed responsive frontend interfaces from design specifications.

Background

Education

A software engineering foundation from the University of Kelaniya, backed by professional training.

BSc (Hons) in Software Engineering

Jan 2019 — Aug 2023

University of Kelaniya, Sri Lanka

Second Class Upper Division · GPA 3.54 / 4.0

Comprehensive Master Java Developer (Professional)

Professional Diploma

IJSE — Institute of Software Engineering, Galle

Professional software engineering diploma

GCE Advanced Level — Physical Science

GCE A/L

Mahinda College, Galle

Combined Maths: A · Physics: A · Chemistry: C

GCE Ordinary Level

GCE O/L

Mahinda College, Galle

7 A’s and 2 B’s

Toolbox

Skills matrix

The stack I use to design, build and operate scalable products — grouped by where it lives in the system.

Languages & Frameworks

The core of everything I ship.

  • JavaScript
  • TypeScript
  • Node.js
  • Express.js
  • React
  • Redux
  • Java

Cloud & DevOps

Scalable, cost-aware AWS systems.

  • AWS
  • Lambda
  • SES
  • SQS
  • CloudWatch
  • EC2 / ECS
  • Serverless
  • CI/CD

Databases & Architecture

Designing systems that hold up at scale.

  • PostgreSQL
  • MongoDB
  • REST APIs
  • Microservices
  • Event-Driven Architecture
  • System Design
  • Performance Optimization

AI & Automation

Using AI to raise team velocity.

  • AI-Assisted Development
  • GitHub Copilot
  • Claude
  • Test Automation (Jest)
  • Workflow Automation

Leadership & Methods

How I help teams deliver.

  • Technical Leadership
  • Mentorship
  • Code Review
  • Cross-Functional Collaboration
  • Agile Development

Tools

Day-to-day delivery toolkit.

  • Git / GitHub
  • Jira
  • Postman

Writing

Articles on Medium

Notes on engineering, architecture and building at scale — pulled live from my Medium feed, so new posts appear here automatically.

Freelance

Let’s build something

Have a web development project in mind? Send a few details and I’ll get back to you.

I take on select freelance web development work — modern, fast, accessible sites and apps. Prefer email? Reach me at padmaisuru@gmail.com.