Product engineering
Systems integration and API development
Systems integration connects the software a business already runs, such as finance, CRM, ERP, HR and industry systems, so data is entered once and flows automatically. Hexploits builds integrations and APIs with error handling, monitoring and reconciliation, so that when a record does not sync, somebody knows.
A named engineer replies within one working day. A written scope and an indicative price within two.
Who this is for
- Businesses re-keying data between systems, or reconciling them by spreadsheet.
- Companies that need a partner, supplier or customer to connect to their systems through an API.
- Operations teams whose process breaks whenever one system changes.
What you get
Deliverables, not slogans. Each one appears in the statement of work.
- An integration map: systems, data, direction, frequency and ownership.
- Integrations built on the vendor’s supported APIs, with retries, idempotency and dead-letter handling.
- Public or partner APIs with authentication, rate limiting, documentation and versioning.
- Monitoring and reconciliation reports that show every failed or mismatched record.
- Runbooks for the people who will support it.
Our engineers work across the major languages, frameworks and cloud platforms. We build on the stack you already run, with technology choices explained in writing before work begins.
How it is delivered
The same four stages as every Hexploits engagement, applied to this capability.
Stage 1
Map
We document every flow and agree which system is the source of truth for each field.
Stage 2
Build
Integrations are built against sandbox environments and tested with real edge cases: duplicates, deletions, partial failures.
Stage 3
Reconcile
A reconciliation run compares both sides before and after go-live.
Stage 4
Operate
Failures alert an engineer, not a mailbox, under managed support.
How success is measured
Every engagement agrees its measures and the measurement period in writing before work starts.
- Manual re-keying hours removed.
- Records out of sync, reported daily and trending to zero.
- Time from an event in one system to its reflection in another.
Proof
Case studies with numbers, and reviews linked to Google where they were left there.
JobVantage · Recruitment technology · Duration TBC
99.9% availability and sub-100ms responses for a recruitment intelligence platform, at negligible infrastructure cost
Gradvisor · Charity · 8 weeks to production, then ongoing
98% faster page loads and a 12% smaller cloud bill for a UK careers charity
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.”

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.”

Questions we get asked
Can you integrate with our accounting or ERP system?
What happens when a sync fails?
Do you use middleware platforms?
Related
Sectors where this is most often needed
More in product engineering
Web platform and portal development
Legacy system modernisation
From spreadsheets to systems: automating the processes your business runs on Excel
Internal tools and workflow software
Software rescue and stabilisation
Automated testing and release engineering
Core payments engineering: Faster Payments, BACS and SEPA
Payment and compliance integrations: Stripe, Adyen, GoCardless, KYC and AML
Payment gateways, routing and orchestration
From MVP to production: building a first product that survives its first customers
Technical due diligence for founders and investors
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.