Soundhar Raj Let’s talk

Senior Full-Stack Engineer · Product Builder

I build web & mobile products from idea to production.

I help startups and businesses turn complex requirements into reliable SaaS, web, and mobile products—covering architecture, development, deployment, and long-term evolution.

View my work Let’s talk
Portrait of Soundhar Raj
Available for remote opportunities

Currently focused on

Product engineering, SaaS architecture, and modernizing production systems.

Working internationally

Collaborating across products, teams, and business contexts.

Freelancer

Proven freelance track record

Freelancer since 2012 Previously ranked Top 50
Experience
15+ years
Projects delivered
180+
Rating
4.9 / 5
Client reviews
150
On time
99%
On budget
100%
View Verified Freelancer Profile

01 / Approach

Beyond delivering tickets.
I help move products forward.

I work across the complete product lifecycle—from understanding business requirements and shaping architecture to building, deploying, and maintaining production applications.

More than a decade of independent client work has taught me to connect engineering decisions to real product needs, work autonomously, and stay accountable for what happens after launch.

02 / Selected work

Product work with depth
and continuity.

Selected engagements that show long-term ownership, infrastructure thinking, and end-to-end product development.

Project 01 Flagship case study

Financial SaaS · Switzerland · Long-term engagement

FidHappy

FidHappy is a financial management platform built for Swiss entrepreneurs, self-employed professionals, SMEs and accountants. It simplifies everyday accounting, administrative and tax workflows through an intuitive web and mobile experience—helping users reduce manual work and focus on running their business.

My work spans long-term engineering ownership and modernisation across legacy PHP systems, financial workflows, Flutter mobile development, secure APIs and backend evolution.

  • CodeIgniter
  • MySQL
  • Flutter
  • Node.js
  • Firebase
Case study coming in a later phase

Project 02

Education SaaS · Ecuador

121Spanish

Built a multi-school online English-learning platform connecting administrators, teachers and students. Developed automated school provisioning with dynamic subdomains, databases, SSL configuration and sequential setup workflows.

  • PHP
  • MySQL
  • Cloudways API
  • Server Automation
Case study coming in a later phase

Project 03

Independent product · Currently in development

DayVault

A private personal-history platform for organising important events, milestones, people, journeys, photographs, notes and reminders into a meaningful life timeline.

  • Flutter
  • Supabase
  • PostgreSQL
  • Edge Functions
  • Cloudflare R2
Case study coming in a later phase

Additional projects

Selected earlier products across business software and commerce.

01

POS & Spa Booking Platform

FingerBooth

Contributed to the early development of a business-management platform combining point-of-sale operations with appointment and spa-booking workflows while leading a four-person development team at Webscarlets.

02

E-commerce Platform

AsiaBuy

Developed e-commerce functionality supporting online product discovery, customer purchasing and business order-management workflows.

03

Customisable E-commerce Platform

Bondstate

Worked on a flexible commerce system designed to support different storefront requirements, product structures and business-specific purchasing experiences.

Beyond these highlighted products, I have delivered 180+ web, mobile, SaaS, e-commerce and business-software projects for clients across Switzerland, Ecuador, Singapore, Germany and Hong Kong.

Some client product visuals and operational details are intentionally omitted to protect confidential business and customer information.

How I engineer products

One builder.
Every layer connected.

I turn requirements into reliable digital products—connecting interface, application logic, data, infrastructure and delivery as one complete system.

Connected system

Full-Stack
Product Builder

Requirements → Architecture → Build → Launch → Improve

01 Product Thinking Requirements, scope, workflows and technical decisions

03 / Earlier work

15+ years of building
useful software.

More than 180 projects delivered across different stages, industries, and technical challenges—with many personally built end-to-end.

From client requirements and architecture through development, deployment, and ongoing support, independent ownership has been a defining part of my work.

SaaS platformsE-commerceCRM & business systemsBooking platformsWordPress & CMSCustom PHP applicationsMobile applicationsAPI integrations

04 / Capabilities

What I work on.

A practical toolkit shaped by years of building and supporting real products.

01

From concept to continuity

Product engineering

SaaS development · MVP development · Product architecture · Long-term product evolution

02

Reliable applications

Web engineering

PHP · Laravel · CodeIgniter · Node.js · JavaScript · Vue.js

03

Cross-platform products

Mobile & platforms

Flutter · Firebase · Supabase · WordPress · WooCommerce

04

Systems behind the product

Backend & data

REST APIs · MySQL · PostgreSQL · Authentication · Third-party integrations

05 / Experience

A career built through
ownership and range.

  1. 2011

    Started professional software development

    Began my career as a PHP developer at Q Base Technologies, building web applications, backend components, and API integrations.

  2. 2012—Present

    Independent / Freelance Full-Stack Engineer

    Delivered 180+ projects for businesses and international clients, with many handled single-handedly from requirements and architecture through development, deployment, and long-term support.

  3. 2013—14

    Webscarlets LLP · Founder

    Built and managed a small development company and team while continuing hands-on engineering and client delivery.

  4. Recent ~5 years

    FidHappy / GenevaDevelopment

    Deep long-term product engineering on a Swiss financial SaaS platform across web, mobile, maintenance, modernization, APIs, and production continuity.

  5. Present

    Senior Full-Stack Engineer & Product Builder

    Continuing independent product development while pursuing international remote opportunities.

06 / International experience

Built across borders.
Focused on the work.

Experience collaborating with clients and product teams across international markets.

SwitzerlandSingaporeGermanyHong KongSweden

07 / About

Soundhar Raj seated in a relaxed interior setting
Soundhar Raj · Full-Stack Engineer & Product Builder

I like making complicated products feel manageable.

I’m a product-minded engineer who is comfortable moving between business conversations, architecture, hands-on implementation, and production troubleshooting.

I value clear thinking, useful software, and the kind of long-term collaboration where understanding the product matters as much as writing the code.

08 / Resume

The complete career overview.

Professional resume

Experience, capabilities and technical background—in one document.

Download a concise overview of my 15+ years building web, mobile and SaaS products.

Last updated
June 2026
Format
PDF · 106 KB
Download resume

09 / Contact

Have a product to build
or a role that fits?

I’m open to remote full-time, contract, and selected consulting opportunities.

iamsoundharraj@gmail.com LinkedIn
What is your requirement?
What are you looking to build? Select all that apply