Bluefin is a London consultancy that designs, builds and modernises software and puts AI to work in real operations. Our specialism is capital markets: over 15 years building OMS/EMS, FIX connectivity, market data and derivatives pricing systems inside Tier-1 investment banks.
We take on defined pieces of work and deliver them to the standard of a trading floor, whatever your industry.
Custom applications, APIs and data platforms, designed for reliability and built to be maintained.
Practical AI that connects to your systems and data, with measurable outcomes rather than demos.
Fractional, senior trading-systems engineering for firms that need depth without a permanent hire.
Systems that move money cannot be slow, wrong or opaque. We bring the same discipline to every product we build.
Web platforms, internal tools and services, from first design through to production support.
Migrate ageing systems onto modern stacks in stages, without stopping the business that depends on them.
Profiling, optimisation and load testing for systems that have outgrown their original design.
Pipelines, warehouses and reporting that give teams numbers they can trust.
Independent reviews of architecture, build-versus-buy decisions and technology roadmaps.
Senior engineers who step into a delayed or stalled project and get it delivered.
We start with where AI will save time or money, then build it properly: integrated with your systems, tested, monitored and owned by your team.
A short, structured review of your processes that ranks where AI will pay back fastest.
Automate document handling, reconciliation, reporting and other repetitive work.
Agents that use your tools and data to complete multi-step tasks, with guardrails and audit trails.
Add language models to existing products and internal systems securely and cost-effectively.
Prepare the data AI depends on and turn it into analysis people act on.
Every Bluefin engagement uses AI-assisted engineering, so you get senior output, faster.
Smaller trading firms need senior trading-systems expertise for specific projects, but that engineer is slow to find, expensive to keep and often more than one project justifies. Bluefin plugs in for the work itself.
years building low-latency trading systems inside Tier-1 investment banks.
Where Bluefin plugs in
Automate post-trade checks, surveillance triage, research workflows and reporting, built by engineers who understand the trade lifecycle.
The question isn't whether an OMS or a pricing engine can be built. It is whether it will hold up in production, under load, on a volatile day.
Latency budgets, deterministic testing and full audit trails. We apply what the trading floor demands to every client's software.
A feature, a service or a complete product, scoped and delivered end to end.
Senior engineers join your team to unblock and ship work that has stalled.
An AI opportunity audit, an architecture review or a performance review, with a clear written plan.
Specialist capacity in AI, low-latency systems or modernisation, for as long as you need it.
| Full-time senior hire | Bluefin engagement | |
|---|---|---|
| Time to value | Months to recruit and onboard | Productive within days |
| Cost shape | Salary, benefits and recruiter fees | Scoped to the work |
| Commitment | Permanent headcount | Project by project |
| Depth | One person's experience | Tier-1 engineering, AI and modern software practice |
| If the need passes | You still carry the role | The engagement ends with a clean handover |
We spent over 15 years building trading systems where software has to be fast, correct and auditable. We now bring that standard to every software and AI project we take on.
Michael Okusi · Chief Technology Officer
Michael brings over 15 years designing and delivering performance-critical systems inside Tier-1 investment banks, across pricing engines, OMS/EMS and market data platforms. At Bluefin he leads technical strategy and delivery across software development, AI and capital markets engagements.
Companies that need senior software and AI capability without building a large in-house team.
Smaller, serious trading firms that need Tier-1 depth for specific projects.
A short conversation is the fastest way to find out whether Bluefin can help, whether it's a new product, an AI initiative or a trading system.
