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Case studies Fanatics
Fanatics
Warehouse platform rebuild
 Avayler
Avayler
Real-time SAP integration
 OSL
OSL
Counter-drone command & control
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Senior .NET Developer · Technical Lead available_now
Senior engineering,
built for the long term.
I'm Usman Daud, an SC-cleared .NET developer and technical lead. For 25 years I've been trusted with the systems that can't go down — from the build team to the boardroom.
Get in touch See my work

"He's the kind of engineer who quietly gets important things done — and makes the team stronger in the process."

Mark Lambert
Mark Lambert
Engineering Manager · Avayler
View case study
25+
years building systems that can't fail
Read about me
~£375k
projected savings delivered
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~98%
straight-through processing
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2,200
site rollout supported
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Case studies
Systems that couldn't afford to fail.
A closer look at three engagements where reliability wasn't optional — what was at risk, what was built, and what it delivered.
Avayler
From manual CSV exports to real-time SAP
~98%
straight-through processing
2,200
site rollout supported
View case study
Avayler case study
Have a project that can't afford to fail? Let's talk.
Get in touch
TRUSTED ON WORK FOR
BrotherFanaticsAvaylerBridgestoneBAE SystemsPanasonicNHSUniversity of ManchesterCrown Prosecution Service
Testimonials
What people say after the project ships.
From the people who managed and worked directly with me — in their own words.
Avayler
Mark Lambert
Mark Lambert
Eng. Manager · Avayler
“He brought 25 years of experience to every problem.”
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Fanatics
Simon Rowe
Simon Rowe
Head of Dev · Fanatics
“Knowledgeable, capable, diligent and a really nice guy with a great attitude.”
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Code
Adam Seabridge
Adam Seabridge
Senior Developer · Code
“He picked things up very quickly and was able to start development straight away.”
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NWEH
Gary Leeming
Gary Leeming
COO · NWEH
“Contributed hugely to a very demanding project with pressing timescales.”
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The University of Manchester
Crispin Bloomfield
Crispin Bloomfield
Development Manager · Uni of Manchester
“Coded to a high standard and delivered on time and to spec — I would hire him again.”
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Swinton Insurance
Craig Payne
Craig Payne
Senior Software Developer · Swinton
“An amazing attention to detail, and a very varied, experienced skillset.”
Read more
About
Trusted with software that isn't allowed to fail.
From R&D show floors to SC-cleared command platforms — a career spent where reliability matters most.
Usman Daud
Usman Daud
SENIOR .NET DEVELOPER & TECHNICAL LEAD
SC-cleared until May 2028
Remote / hybrid
linkedin.com/in/usman-daud
Core stack
C# .NET Core ASP.NET Web API AWS Azure Microservices Event-driven RabbitMQ SAP & enterprise integration SQL PostgreSQL
In short
Judgement, as much as code.
Knowing when to move fast and how to leave things stronger than I found them.
Twenty-five years writing the software that isn't allowed to fail.
Enterprise ERP integration, national digital services and counter-drone command platforms.
As comfortable in a stand-up as in the boardroom.
Translating between deep engineering detail and the people paying for it.
Selected Roles — click a card to flip
OSL
OSL · SC CLEARED · 2024–2026
Counter-drone command platform
Software Developer (SC)
CLICK TO FLIP
OSL · SC CLEARED · 2024–2026
Counter-drone command platform
Integrated radar, RF and optical sensors into a live counter-drone C2 platform protecting critical national infrastructure.
C# .NET Core Vue 3 Python MySQL RabbitMQ Prometheus Grafana Docker Azure Sensor SDKs
Avayler
AVAYLER · 2022–2026
Real-time SAP integration
Senior Software Developer / Integration Lead
CLICK TO FLIP
AVAYLER · 2022–2026
Real-time SAP integration
Replaced a manual CSV process with a resilient, extensible real-time SAP integration.
98%
Straight-through
2,200
Site target
C# .NET Core PostGreSQL AWS SAP REST APIs Microservices Event-Driven
CPS
CPS · 2021
Secure case management
Software Developer (SC)
CLICK TO FLIP
CPS · 2021
Secure case management
Secure case-management systems for the public sector, where access control and auditability came first.
C# .NET Core GraphQL Docker EF Core SpecFlow Azure Swagger
Fanatics
FANATICS · 2017–2020
In-house platform rebuild
Senior Software Developer / Team Lead
CLICK TO FLIP
FANATICS · 2017–2020
In-house platform rebuild
Designed and led an in-house commerce platform to retire costly third-party licences across global sports brands.
£375k
Saved · 3 yrs
C# .NET Core SQL Angular AWS RabbitMQ TeamCity Octopus
Swinton
SWINTON INSURANCE · 2014–2016
Line-of-business systems
Software Developer
CLICK TO FLIP
SWINTON INSURANCE · 2014–2016
Line-of-business systems
Line-of-business .NET systems for a national insurance broker — the everyday tools a large operation runs on.
C# ASP.NET MVC SQL SSIS SSRS WCF RabbitMQ Selenium
Brother
BROTHER INTERNATIONAL EUROPE · 2003–2007
Device software & product R&D
Product Development Engineer
CLICK TO FLIP
BROTHER INTERNATIONAL EUROPE · 2003–2007
Device software & product R&D
Built desktop and device software and took new products to trade shows and executive briefings across Europe, the US and Japan — folding the feedback straight back into the roadmap.
C# WinForms ASP.NET SQL Web Services Device SDKs
This is a selection. For the full career path — including earlier roles at Halfords, NWEH and the University of Manchester — request a CV and I’ll send it over.
Request CV
FAQ
Questions
What kind of engagements do you take on?
Senior contract .NET roles — technical lead or senior developer — on systems where reliability and integration matter. Remote or hybrid, on-site when strictly necessary.
How do you work on IR35?
Outside IR35 preferred. Inside considered for the right engagement — happy to discuss on a call.
Are you SC cleared?
Yes — SC cleared until May 2028, with delivery experience on counter-drone and critical-infrastructure programmes. Clearance is really a statement about the assurance standard I'm used to working to: controlled environments, auditable decisions, and systems that are held to account. That discipline applies just as directly to commercial platforms where an outage costs money rather than lives.
What's your core technology stack?
C#, .NET Core, ASP.NET and Web API across AWS and Azure, with microservices, event-driven design, RabbitMQ, SAP integration and enterprise APIs.
How do you work with non-technical stakeholders?
I've presented to audiences from developers to global executives. I translate deep engineering detail into business priorities and keep every stakeholder group aligned throughout delivery.
What's your availability?
Immediate. Get in touch and I'll respond quickly to discuss the role and how I can help.
Still got questions? Message me on LinkedIn
Get in touch
Let's talk about the system you can't let fail.
Immediate availability — remote, hybrid, or on-site when it matters. Tell me about the role and I'll get back to you within a day.
Work email
Get in touch
Opens a short brief — six questions, about a minute.
Prefer a conversation? Message me on LinkedIn