High-Performance Software Engineering
Plaintextnerds is a London-based specialist firm, focussing on High-Throughput Low-Latency software and algorithms for FinTech, Trading, and Real-Time applications.

Why us?
Engineers first, Consultants second.
Founded by Tim Armstrong, Head of AI at BleuBox Group.
Plaintextnerds exists to provide access to high-performance engineers that are too expensive for most companies to hire as full-time employees.
Other firms
Most consultancies are built on information asymmetry; they know something you don't, and they'll milk that gap for all it's worth. They'll dazzle you with buzzwords, charge you a fortune, and deliver something unmaintainable.
Our team
We're built on the opposite principle: Radical transparency.
We document everything and offer training for internal software teams to ensure future maintainability by anyone.
This might seem like bad business, but here's our secret: when you're genuinely good at solving hard problems, you don't need to hide behind smoke and mirrors.
Laggy and Slow services
Modern software teams move fast, and don't have time to prioritise performance until it becomes a problem, and when they need to, they don't know how.
Performance optimised solutions
Our team have extensive experience in performance optimisation, solving issues in days that take internal teams weeks to even identify.
From vibes
Whether you've got an idea, a prototype, or an existing product you want to improve.
To Production
We help you get it to production, security and stability tested, optimised to your performance requirements, and we'll help you document maintain it.
By the numbers
Experts in 14+ programming languages
Each member of our team has over a decade of experience in several programming languages, from HTML & Javascript to Rust & C++

Delivering upto 50,000x more performance
We've delivered real-world performance improvements of upto 50,000x in projects from startups to Fortune 500s. With everything from custom studies/indicators so fast that SierraChart registers them as 0ms, to SmartContracts that handle more than 50k more transactions than the ones written by [a global firm that shall remain unnamed].

100% committed to excellence
We aim to excel in everything we produce, from code to documentation, and take feedback seriously. We want to know that we're delivering the best experience at all times. If we fall short at any point let us know.
Our Clients
- [Plaintextnerds are] excellent. Whilst CTO of a VC backed startup, we contracted [them] to support on some top of mind priorities. He is not only incredible technically, but consistently pushed to help refine the business needs, meaning he delivered excellent work, on time, that was actually relevant to what we were trying to achieve. His overview of the tech landscape is also excellent, meaning that he could help inform or team on broader decisions. I'd definitely work with Tim again.Wulfie BainApplied AI, OpenAI
- [Plaintextnerds] came up with the ideas, did his research, validated with data, and then delivered. I really appreciated his insights into what things are worth focusing on and what projects or tasks we should abandon or not invest in. The work he had done for us helped us deliver a good amount of growth from the right accounts. Tim was also a great colleague to work with. Very polite, listening and adapting to feedback, and always improving on his work.Michal BrutvanSenior Product Manager, CloudQuery
- Very professional, deeply knowledgeable, detail-oriented and yet always open-minded.Marco TroisiCTO, Trilo
- [Plaintextnerds] are exceptional engineers who have consistently delivered top quality work for my company. I would work with Tim anytime. Highly recommend.Jack SymondsCEO, Lounge