Diagnose
We audit your architecture, data flows, and failure patterns before writing a single line of code. Most problems are misdiagnosed before we arrive — and misdiagnosis is expensive.
North America & Europe · C# / .NET · Azure
Every Hour Your Bottleneck Runs,
It Costs You.
Slow processes, broken integrations, and regulatory gaps aren't IT problems — they're revenue problems. We design, build, and rescue enterprise backend systems in C#/.NET and Azure — whether you need a new platform built or an existing one fixed — and deliver results you can measure.
95%
Statements Within 5s
50→0
Staff Replaced by One Pipeline
10+
Years Enterprise Experience
5
Systems in Production
What We Solve
Backend problems always have a business cost attached.
Every engagement has a measurable business consequence. We track success in throughput gained, cost eliminated, and regulatory risk removed — not lines of code or sprint velocity.
Performance
Critical System Bottlenecks
A core process running far below its architectural capacity isn't a technical nuisance — it's a competitive liability costing you throughput every single day. We locate the constraint, quantify the business cost, and eliminate it.
Integration
Third-Party Integration Failures
Every day a broken API or failed data feed sits unresolved is another day of manual workarounds, customer-facing errors, and compounding operational risk. We build integrations that survive production load and regulatory scrutiny.
Compliance
Regulatory & Reporting Exposure
Manual compliance workflows are error-prone by design. Whether it's US tax-form reporting, EU regulatory obligations, or shareholder proxy voting, we automate the obligation completely — so the regulator never has a reason to call.
Automation
Operational Drag from Manual Work
When dozens of employees spend days on work that should take hours, the architecture is the problem. We've replaced 50-person, multi-day manual operations with fully automated Azure pipelines — zero human touchpoints required.
How We Work
No surprises.
No surprises.
No disappearing after launch.
Most consultancies skip the diagnostic and jump straight to the proposal. We don't. Every engagement follows a disciplined four-step process that protects your investment from the first conversation.
Architect
We design the target state with explicit trade-offs documented. You know what we're building, why we're building it that way, and what we're explicitly choosing not to do.
Deliver
Production-ready C#/.NET code, tested against your actual load patterns. Documentation is built in parallel — not bolted on in the final week before handoff.
Sustain
Post-launch, we remain available — not as a courtesy, but by design. We've supported Azure-hosted systems 18+ months after delivery. New requirements, new volumes, new regulations: what we build stays sound as they arrive.
Our Technical Environment
Proven Outcomes
Results our clients measured.
Every number below corresponds to a real engagement. Client identities are protected. Results are not.
95%
Account Statements Within 5 Seconds
A trading platform's account statements ran on a slow monolith over data spread across several databases and services. We rebuilt the engine into .NET microservices with parallel reads and an Azure Blob cache — returning 95% of statements inside a five-second target.
50→0
Staff Required After Catalog Automation
A European retailer mobilized 50 employees for 3–4 days per cycle to process catalog updates. Our automated Azure pipeline reduced the operation to under 3 hours, with zero manual input and near-zero error rates.
2
Regulatory Workflows Fully Automated
US 1099 tax-form filing — 1099-B, 1099-DIV, and the new 1099-DA — and US & global shareholder proxy voting: two regulated, deadline-bound workflows automated end-to-end and running in production.
Selected Engagements
What these engagements delivered.
Client identities are protected. Each engagement is described by sector and outcome.
Account statements that had slowed to a crawl as the book grew were rebuilt to return ninety-five percent of requests inside a five-second target — with the client working directly with a single senior engineer from first call to go-live, and no consultancy layer in between.
A catalog refresh that tied up fifty operations staff for three to four days each cycle now runs unattended in under three hours. The first production run completed inside the weekend window, and no manual cycle has run since.
Tax-form reporting that was assembled by hand every filing season — and still produced errors — now runs as an automated pipeline, including a brand-new first-year filing a previous vendor had called too risky to automate, and has met every deadline since.
Architecture built to survive the jump from pilot to production without a rewrite — delivered with documentation clear enough that the client's own engineers extend it today without anyone from Subject Matter Systems in the room.
Common Questions
What to expect before the first call.
- What backend engineering services does Subject Matter Systems offer?
- Three engagement models: an Embedded Partner (a senior .NET architect embedded directly in your team on a monthly retainer), Project-Based Delivery (fixed scope, milestone-gated payments for defined problems), and a Discovery Sprint (a two-week diagnostic that audits your backend architecture and delivers a written remediation roadmap with no obligation to proceed).
- Which industries and regions do you work with?
- Financial services, enterprise retail, fintech, deep tech, and robotics — primarily across North America and Europe. Most engagements are conducted remotely with no travel required from the client.
- How quickly can an engagement begin?
- Most engagements begin with a 30-minute diagnostic conversation. From first call to signed scope, the typical lead time is one to two weeks. A Discovery Sprint can usually begin within two to three weeks of initial contact.
- Do you work with companies that already have an internal engineering team?
- Yes — most clients have internal teams. The most common pattern is acting as an embedded senior architect alongside an existing team, owning specific architectural challenges while the internal team handles product and feature work.
Why Teams Trust Us
Senior accountability, built into every engagement.
One senior architect
The engineer who scopes your system is the one who builds it — no account managers, no junior hand-offs.
10+ years in regulated backends
High-load trading, compliance reporting, and financial systems delivered across the US and EU.
You own everything
Full source, documentation, and IP with complete knowledge transfer. No lock-in, no dependency on us.
We don't disappear
We've supported Azure systems 18+ months past delivery. Post-launch availability is by design.
Free Resource
Not Sure Where Your Backend Stands?
The 12-point diagnostic we run on real .NET and Azure engagements — covering performance, integration resilience, auditability, and compliance risk. Twelve concrete checks, why each matters, and the warning signs. Written for engineers and the people who answer to the board.
Stop Losing Revenue to
Avoidable Problems.
One 30-minute conversation is enough for us to tell you honestly whether we can help — and what the engagement would look like.