Your tools, finally talking to each other.
APIs, integrations, and event pipelines that move data between your systems automatically, so nothing gets re-keyed and nothing falls through.
What you walk away with.
- 01
Automated data flow
Data flowing between systems without manual steps
- 02
Documented APIs
APIs documented well enough for the next team
- 03
Retry-safe pipelines
Idempotent, retry-safe pipelines that don't double-process
- 04
Integration map
A map of your integrations someone can actually maintain
Every re-keyed record is a tax on your team and a bug waiting to happen.
We design and build the connective tissue between your systems: clean APIs, third-party integrations, and event pipelines that keep CRMs, finance tools, and databases in step in real time. We've integrated everything from Open Banking APIs to bank SFTP feeds to 20-year-old legacy cores.
Sound familiar?
The sentences we hear on first calls.
Someone exports a CSV from one system and imports it into another, weekly
Heard yourself in one of these?
Talk to us→Four steps. No mystery.
- Step 01
Map the flows
What data lives where, which copy is the truth, and where it stalls.
- Step 02
Design the contracts
Typed schemas and clear ownership, so integrations fail loudly, not silently.
- Step 03
Build & harden
Idempotency, retries, and monitoring: the difference between a script and a pipeline.
- Step 04
Document & hand over
Every integration mapped and documented so it outlives any one engineer.
The full scope, one accountable team.
API design & development
clean, versioned, documented APIs your partners will thank you for
Third-party integrations
payment gateways, CRMs, ERPs, and the long tail of SaaS
Open Banking
PSD2 AISP/PISP flows, consent management, and eIDAS certificates
Event pipelines
webhooks and queues that decouple systems and absorb failures
Data sync & ETL
scheduled and real-time sync with per-source processors
Legacy bridges
modern interfaces in front of systems too critical to replace
We've already built this.
Blackcurrant Finance: Accounting & Open Banking Platform
Cloud accounting microservices platform with Open Banking integration for real-time bank transaction import and PSD2 payment initiation.
- Live bank transaction import via PSD2 AISP flow with Barclays Open Banking API
- Payment initiation (PISP) enabling outbound payments directly from the accounting platform
- Microservice architecture with RabbitMQ decoupling accounting, payments, and Open Banking concerns
Questions, answered.
The things people ask us before starting a project like this. If yours isn't here, ask us directly, we reply like humans.
Ask us anything→We keep exporting CSVs between systems by hand. Can you actually stop that?
Yes, that's exactly the pattern we replace: mapping what data lives where, which copy is the source of truth, then building the pipeline that keeps them in sync automatically instead of someone exporting and re-importing weekly.
What happens if an integration fails partway through?
Our pipelines are built idempotent and retry-safe, so a failure doesn't double-process a record or leave things half-updated. Failures are designed to fail loudly, with monitoring, rather than silently corrupting data.
Do you work with Open Banking and financial APIs specifically?
Yes, this is where a lot of our practice comes from: PSD2 AISP/PISP flows, consent management, and eIDAS certificates for bank-grade integrations, alongside the standard third-party integration work.
A key integration was built by someone who's since left. Can you take it over?
Yes, we regularly inherit exactly this situation. We document what the integration actually does, harden it against the failure modes it wasn't built for, and make sure it outlives the next departure too.
We need to expose an API to partners. How do you make sure it holds up?
Clean, versioned, and properly documented from day one, with the idempotency and retry-safety built in up front, since a partner-facing API you get wrong the first time is much harder to fix once others depend on it.
We've unified four payment gateways behind one API, ingested bank feeds from HSBC and Goldman Sachs, and bridged legacy cores to modern platforms. Integration is where our fintech discipline shows: idempotent, audited, and boring in the best way.
Ready to craft tomorrow, today?
Where innovation meets execution, and ideas evolve into impactful solutions. Book a free consultation, no strings attached.