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Netherlands>Frontend Lead▍

Lavanya Manivannan

Senior Software Engineer | Frontend Lead | Full-Stack & AI-Assisted Development

“I turn complex product challenges into intuitive, scalable digital experiences.”

I'm a Netherlands-based software engineer with over a decade of experience building fintech platforms, marketplaces, ecommerce applications and enterprise solutions. I combine frontend engineering, full-stack development, product thinking and AI-assisted workflows to deliver reliable, user-centred software.

  • React
  • TypeScript
  • Next.js
  • Node.js
  • AWS
Portrait of Lavanya Manivannan in the Netherlands

01 · About

Product-minded. Engineering-led.

I'm a product-minded software engineer who enjoys turning complex requirements into intuitive digital products.

Over the years, I've worked across startups, scale-ups and enterprise environments, contributing to products involving financial transactions, compliance, customer onboarding, ecommerce and healthcare.

My strengths include frontend architecture, reusable design systems, API integrations, user experience, accessibility and full-stack collaboration.

I enjoy working closely with designers, product teams and engineers, taking ownership from technical planning through implementation, testing and delivery.

More recently, I've incorporated AI coding agents and AI-assisted engineering workflows into development, refactoring, testing and documentation — always retaining responsibility for the quality and correctness of the final solution.

10+ Years

in Software Engineering

Frontend & Full-Stack

Expertise across the product stack

Product Leadership

& AI-Assisted Delivery

02 · Featured Work

Engineering case studies

Renno

Fintech & Payments Platform

Jan 2026 – Jul 2026

Front End Lead

Visit renno.pro ↗

Developed complex fintech product experiences involving contractor onboarding, business verification, protected payments, milestone management and project workflows across the Netherlands and United Kingdom.

  • React
  • TypeScript
  • Vite
  • Tailwind CSS
  • REST APIs

Immigroov

Global Mentorship Marketplace

Feb 2025 – Jan 2026

Frontend Lead / Product Engineer (Freelance)

Visit immigroov.com ↗

Helped develop a mentorship marketplace connecting individuals planning international relocation with experienced mentors.

  • React
  • TypeScript
  • Tailwind CSS
  • AWS Cognito
  • Lambda
  • API Gateway
  • Aurora PostgreSQL
  • REST APIs

Enterprise Ecommerce Platforms

International commerce at scale

Oct 2019 – Aug 2023

Senior Full Stack Engineer · Redgrape Business Services

Visit laithwaites.co.uk ↗

Developed and improved large-scale ecommerce platforms serving international markets.

  • React
  • Next.js
  • TypeScript
  • Storybook
  • Contentful
  • Node.js
  • REST APIs

Enterprise Healthcare & Ecommerce

Appointments, pharmacy & digital health

Dec 2014 – Oct 2019

Associate · Cognizant Technology Solutions

Visit walgreens.com ↗

Contributed to enterprise healthcare and ecommerce applications, including customer experiences supporting appointment booking, pharmacy services and digital healthcare content.

  • React
  • Redux
  • JavaScript
  • Accessibility
  • Testing

Women Entrepreneurs Connect

Community platform · Freelance

Dec 2023 – Sep 2024

Designer & Developer

Visit wec-org.com ↗

Designed the brand identity and developed a responsive platform for networking, events and resource sharing among women entrepreneurs.

  • Brand Identity
  • UX Design
  • Responsive Frontend
  • CMS

Family Calendar

Personal product · In development (2026)

2026 — In development

Architect & Engineer

Architecting a configurable family dashboard designed to organise schedules and calendar-based workflows.

  • React
  • Next.js
  • TypeScript
  • Fastify
  • Prisma
  • PostgreSQL
  • Google Calendar

03 · Skills

Technical toolkit

Frontend Engineering

  • React
  • Next.js
  • TypeScript
  • JavaScript
  • Redux
  • Tailwind CSS
  • Vite
  • Storybook
  • HTML5
  • CSS3

Backend & APIs

  • Node.js
  • Express.js
  • Java
  • Spring Boot
  • Python
  • REST APIs
  • GraphQL
  • Microservices

Cloud & Infrastructure

  • AWS Lambda
  • Cognito
  • API Gateway
  • S3
  • CloudFront
  • DynamoDB
  • Aurora PostgreSQL
  • Docker
  • CI/CD
  • GitHub Actions

Testing & Quality

  • Jest
  • React Testing Library
  • Playwright
  • Cypress
  • Accessibility
  • WCAG
  • Performance Optimisation

Product & Architecture

  • Frontend Architecture
  • Design Systems
  • Technical Documentation
  • API Integration
  • Product Engineering
  • Agile Delivery

AI-Assisted Development

  • GitHub Copilot
  • Cursor
  • Devin
  • Claude Code
  • Codex
  • AI-Assisted Implementation
  • Testing and Refactoring

04 · Career Journey

A decade of building

  1. Jan 2026 – Jul 2026

    Front End Lead

    Renno BV

  2. Feb 2025 – Jan 2026

    Frontend Lead / Product Engineer (Freelance)

    Immigroov

  3. Oct 2019 – Aug 2023

    Senior Full Stack Engineer

    Redgrape Business Services

  4. Dec 2014 – Oct 2019

    Associate

    Cognizant Technology Solutions

  5. Jun 2014 – Nov 2014

    UI Developer

    SRS Business Solutions

  6. May 2013 – May 2014

    Research Trainee

    Qruize Technologies

Education

2025

MSc in Global Sustainable Business Management

Joint Degree — Amsterdam University of Applied Sciences & University of Northumbria

2012

Bachelor of Engineering in Electrical and Electronics Engineering

Paavai Engineering College

05 · Philosophy

Engineering in the AI Era

I see AI as a powerful engineering collaborator, not a substitute for sound technical judgement. I use AI-assisted tools to explore solutions, accelerate implementation, improve documentation and strengthen testing while remaining accountable for architecture, code quality, security and product outcomes.

  1. 01

    Problem

  2. 02

    Technical Design

  3. 03

    AI-Assisted Implementation

  4. 04

    Review & Testing

  5. 05

    Delivery

06 · Contact

Let's Build Something Meaningful.

I'm open to connecting with teams building thoughtful digital products and solving meaningful engineering challenges.

lavanya1690@gmail.com