Product engineering
New systems built, old ones modernised, and the processes that run on spreadsheets turned into software, by a team that stays to run them.Web platforms, internal systems, integrations and the modernisation of the software your business already depends on. Delivered by an embedded team or as a fixed-scope project, with weekly reporting either way.
Who this is for
- Businesses whose core system was built by a supplier who has since moved on.
- Operations teams running on spreadsheets and email where a system should be.
- Companies that need a customer-facing product built properly the first time.
What’s included
Each capability has its own page with deliverables, process, measures and questions answered.
Web platforms and portals
Customer, supplier and staff portals with authentication, roles and reporting built in.
Legacy modernisation
Incremental replacement of ageing systems with no big-bang cutover and no lost data.
Integrations and APIs
Connecting finance, CRM, ERP and line-of-business systems so data is entered once.
From spreadsheets to systems
The processes the business runs on Excel and email, turned into systems with automation, one at a time.
Internal tools and workflow
The operational software that takes over from the spreadsheets and email the business runs on today, one process at a time.
Rescue and stabilisation
Taking over a system from a previous supplier, documenting it, and making it safe to change.
Testing and release engineering
Automated tests and pipelines so releases are routine rather than an event.
Core payments: Faster Payments, BACS and SEPA
Ledgers, scheme connectivity and reconciliation for the UK and EU payment rails.
Payment and compliance integrations
Stripe, Adyen, GoCardless, KYC and AML providers behind one abstraction, reconciled automatically.
Payment gateways, routing and orchestration
Routing, retries and reconciliation across acquirers and markets, built or bought.
From MVP to production
A first product that survives its first enterprise customers, in your own accounts from day one.
Technical due diligence
An independent, fixed-price assessment for a round, an acquisition, or a founder who wants to know first.
How it’s delivered
Engagement models that fit this service, in order of how often clients choose them.
- Stage 1.
Delivery and iteration
Monthly retainer on 30 days’ notice, or fixed price per phase
Software built or changed by a team in one of two shapes: embedded inside your business, on your tools and in your meetings, or run in-house at Hexploits with your stakeholders joining the demos. Bring a specification or we write one with you. Either way you get a written report every week, a working demonstration every fortnight, and live progress against the KPIs agreed at the start.
Best for: Every build, integration, migration or AI system. Embedded when you have an internal team to work alongside; in-house when you would rather hand the work over and see it at the demo.
- Stage 2.
Discovery and assessment
2–4 weeks
A fixed-price, fixed-length look at an idea, a process or an existing system, ending in a written report your board can act on: what it would take, what it would cost, and whether it is worth doing. Feasibility studies, technical assessments and due diligence all start here.
Best for: Before committing to a build, a migration or an AI initiative. Also the starting point for a security review, an EU AI Act assessment, or due diligence on a system you are buying.
- Stage 3.
Deployment and monitoring
Rolling, 30 days’ notice
Someone to own a system that is already live: deployment pipelines, monitoring, patching, backups, on-call and support, on a monthly contract with response times in writing. The monthly figure includes two hours of incident work; anything beyond that is billed per engineer per hour. Runs on your existing stack or on Hexploits Cloud.
Best for: Anything in production that matters, where you would rather one contract covered deployment, support and small changes. Most clients choose it after a build; none are obliged to.
Technologies & frameworks
Technologies we’ve used on recent projects.
Languages
- Java
- Python
- JavaScript
- TypeScript
Frameworks & runtimes
- Node.js
- Spring Boot
- .NET
- Django
- Flask
- React
- Next.js
Data & AI
- PostgreSQL
- SQL Server
- pgvector
- Claude
- OpenAI
- Open-weight models
Cloud & edge
- AWS
- Google Cloud
- Azure
- Cloudflare
- Hexploits Cloud
Platforms & delivery
- Kubernetes
- Docker
- AWS Lambda
- Terraform
- Helm
- Argo CD
- GitLab CI
- GitHub
Monitoring & observability
- Grafana
- Loki
- Prometheus
- OpenTelemetry
We’re familiar with modern technology stacks beyond those shown here, and work with the languages, frameworks and platforms your business already uses.
Proof
Outcomes with numbers and named clients.
Gradvisor · Charity · 8 weeks to production, then ongoing
98% faster page loads and a 12% smaller cloud bill for a UK careers charity
JobVantage · Recruitment technology · Duration TBC
99.9% availability and sub-100ms responses for a recruitment intelligence platform, at negligible infrastructure cost
swarmd.ai · Software vendor · 6 months
Enterprise AI control plane delivered in six months at 75% under budget for a UK software vendor
What clients say
Verified reviews, linked to Google where they were left there.
Director, Gradvisor
“Fantastic company and our development partner for Gradvisor, a social mobility careers platform with national ambitions. Extremely responsive and mission-oriented. Cameron owns any shortfalls humbly - rare for IT providers. Thinks like a client too.”
Director, Lothbury
“Top quality delivery, and reasonable price. Will be using again.”
Director, JobVantage
“Working with Hexploits has genuinely been a pleasure, and I see them as my scaling partner for the foreseeable future as JobVantage grows. If you’re looking for a development team who combine strong AI/engineering capability with honesty, flexibility and a real interest in your business, I’d strongly recommend them.”
Questions we get asked
Do we own the code?
Can you take over a system someone else built?
How do you report progress?
What if requirements change?
Next step
Request a proposal.
Tell us about the system and the sector. A named engineer replies within one working day. A written scope and an indicative price within two working days of a short scoping call.