Saad Dar

Software Engineer

Saad Dar Profile

Senior full-stack software developer and consultant with cross-industry expertise in building complex, scalable applications

About Me

Product-minded and impact-driven. I like to work close to users and have shipped award-winning software to production.

Comfortable architecting greenfield platforms, modernising legacy codebases, and advising senior stakeholders on technical strategy.

Experience

Red Badger

Apr 2022 - Present

Deliver software in cross-functional, product-focused teams across a range of clients and industries, working in an Agile environment with pair programming and test-driven development.

Learn more about my projects below!

Barclaycard

Apr 2026 - Present

Technologies used: Rust, Kotlin, Spring Boot, TypeScript, React, DynamoDB

Built core systems for a greenfield merchant payment platform set to become foundational to the business.

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  • Created end-to-end transfer functionality, from the data model through to the UI.
  • Delivered the data transformer that processes incoming bank transaction data.
  • Engineered the pipeline and infrastructure linking S3 storage to the database.

Serco

Oct 2025 - Jan 2026

Technologies used: Appian, GOV.UK Design System, CSS, React

Conducted two audits advising the C-suite on high-stakes technical decisions.

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  • Cybersecurity audit: analysed incidents and practices, and advised the CTO on changes that strengthened the company’s security posture.
  • Technology audit: evaluated the existing stack, weighing trade-offs to shape future technology and roadmap decisions company-wide.
  • Developed a proof-of-concept beyond low-code that was well received and later showcased company-wide as a reference example.

: Comparison Creator

Jun 2025 - Aug 2025

Technologies used: Python, Django, Azure DevOps

Engaged to modernise a sprawling legacy codebase, focusing on version control, DevOps and security practices.

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  • Established a monorepo, CI/CD pipelines and Azure DevOps infrastructure, improving developer experience.
  • Replaced an error-prone manual deploy (developers logging into multiple machines to pull and release code) with a one-click, gated and automated pipeline.

Levi's

Apr 2022 - Feb 2025

Technologies used: JavaScript, TypeScript, React, Tailwind, Node.js, GraphQL, AWS

Built an award-winning internal tool for curating seasonal collections, which grew into the primary data source for managing product data across Levi’s global branches.

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  • Our team received the LS&Co Koshland award for exceptional work.
  • Worked in a large cross-functional team, practising pair programming and mentoring team members.
  • Scaled the application and architecture to accommodate passing data downstream to global users.
  • Optimised large seasonal product tables to load roughly 60× faster.
  • Reduced daily global product data export time by over 80%.

Kokoro

Nov 2021 - Apr 2022

Technologies used: C#, JavaScript, React, Azure

Developed marketing data analytics and visualisation software used company-wide to inform client strategies, proposals and reports.

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  • Worked in a small tight-knit team.
  • Provided direct technical support to clients and users.
  • Integrated with Salesforce and built an API integration test suite.

Symology

Sep 2019 - Nov 2021

Technologies used: C#, TypeScript, SQL

Built Aurora, a modern infrastructure asset-management system, with my team focused on the customer service subsystem.

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  • The system was used by the government and corporate clients such as Virgin and CityFibre.
  • Maintained and extended a large codebase of over 10 million lines of code.
  • Integrated role-based access control in the front-end.

Education

Sep 2014 - Jul 2019

First Class Honours BSc, Royal Holloway University

Commendation letter for ranking among the top 17 students out of over 100.

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    Royal Holloway University
  • Achieved 96% in the ‘Machine Fundamentals’ maths and theory exam.

    • Computing in Luton Sixth Form College
  • Invigilated students' IT exams which included instructing, assessing and guiding them during the exam.

    • Icknield High School
  • Work experience as Information Technology Assistant at Bedfordshire African Community Centre.

My Projects

Skin Mark Identifier AI App

Trained a deep-learning model that identifies skin conditions from user-uploaded photos, packaged into a published app. Used Python and fastai.

MyCab Rider and Driver Apps

Developed an Uber-style taxi service with cross-platform (iOS & Android) rider and driver apps using JavaScript and Ionic Framework.

Physics-Based Endless Survival Game

Game with simulated physics for the players and adversaries, developed using Python and PyGame Framework.

E-Commerce Website

Designed and built a full-featured e-commerce site for securely purchasing and reviewing products using JavaScript, PHP and Laravel.

Reaffirming Reminders App

Created an iOS app to select motivational quotes and helpful reminders to be sent as notifications to yourself at selected intervals.

Coming soon...

Exciting work happening. Stay tuned for more updates!

Coming soon...

More future projects.

Let's chat

Always interested in opportunities to collaborate on something great!

Prefer your own email client? Reach me at saaddar01@protonmail.com