Fahmid Haque
Fahmid Haque

Full Stack Software Engineer

Open to offers · Member since 22 Oct 2026
Location
London, United Kingdom
Desired salary
Confidential
Work preference
Hybrid / Full Time, Contract
Experience level
Mid

About

Professional summary

I am a Full Stack Software Engineer with over three years of commercial experience building enterprise SaaS products. I deliver React and TypeScript frontends alongside C#/.NET, Node.js, and Azure-based backend services.

I have worked on a global data-centre provider portal serving more than 5,000 customers, helping consolidate services inherited through acquisitions into a unified platform. I take ownership of tickets from requirements clarification through implementation, automated testing, QA, UAT, and release support.

My experience includes secure authentication and authorisation, role and permission management, microfrontends, REST and GraphQL APIs, Azure integrations, SQL-backed workflows, data migration, and observability. I am comfortable investigating issues across browser, API, cloud, and data layers.

I have delivered security improvements, including JWT validation and remediation of CodeQL findings, as well as performance and reliability improvements through request cancellation, telemetry, dependency health checks, and cloud-service optimisation.

I also build independent full-stack products. My current portfolio project is a barbershop booking platform built with Next.js, NestJS, Prisma, and PostgreSQL, featuring secure authentication, booking foundations, API contracts, automated testing, and transactional processing.

Notice period: Immediately

Skills

34 capabilities

Tech stack & tools

Working toolkit

Experience

Career history

Full Stack Software Developer Aqovia

Worked in a 12-15 person blended Aqovia and client squad rebuilding a global data-centre provider portal into a unified enterprise SaaS platform for more than 5,000 customers. Owned cross-stack tickets spanning user management, authentication, permissions, account access, and data migration from requirements clarification through implementation, automated testing, QA, UAT, and stakeholder demonstrations.

Delivered React and LitElement frontend features, C#/.NET services, Node.js and Express APIs, Azure Functions, GraphQL and REST integrations, and Azure SQL workflows. Improved platform security by closing an authentication and authorisation gap using JWT/JWKS validation and remediating CodeQL findings; also improved reliability and observability through request cancellation, Application Insights instrumentation, dependency health endpoints, and cloud workflow diagnostics.

Graduate Software Developer Sigma Labs

Built small full-stack applications using HTML, CSS, JavaScript, React, and REST APIs. Applied authentication, security, object-oriented programming, and test-driven development practices.

Worked with Git and agile delivery practices while developing practical software engineering skills across frontend and backend application development.

Technology Consultant Smith & Wardle Financial Consultants

Translated business requirements into technical options to support stakeholder decision-making. Coordinated delivery activities and documented user flows for technology-related initiatives.

Worked at the intersection of business and technical teams, helping clarify requirements, communicate implementation options, and maintain delivery documentation.

Full Stack Developer Personal Project

Building an active portfolio project: a full-stack barbershop booking platform using Next.js, NestJS, TypeScript, Prisma, and PostgreSQL. Created separate customer and staff route areas with modular API feature boundaries, customer authentication, and booking and availability foundations.

Implemented secure browser authentication using Backend for Frontend handlers, HttpOnly cookies, JWT access tokens, one-use refresh-token rotation, replay detection, email verification, and short-lived MFA challenges. Added OpenAPI-generated contracts, focused unit and end-to-end tests, transactional-outbox processing, and architecture decision records; staff/admin features, payments, mobile, and broader end-to-end verification remain in development.

Education

Learning history

University of Birmingham

MEng, Chemical Engineering

Graduated with Upper Second-Class Honours (2:1) in Chemical Engineering.

This professional hasn’t added portfolio projects yet.

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