Data Infrastructure Engineering for Financial Services & FinTech
Numbers that quietly stop matching are worse than a system that crashes, they get caught by finance or an auditor, not QA. We build the reliability, real-time, and access-control layer around financial data that's built to be checked.
Where Financial Data Infrastructure Actually Breaks
Payment, ledger, and risk pipelines rarely fail loudly. A source system outage that drops a batch, a duplicate ingest that double-counts a settlement, or a currency-conversion bug all produce a job that exits successfully and writes wrong numbers. Nobody catches it until finance closes the books, or an auditor asks for evidence the control existed.
Reliability monitoring — freshness, volume, and reconciliation checks on top of the pipeline itself — catches that class of failure. Real-time infrastructure matters where a decision, fraud scoring or a balance check, needs to happen inside seconds, not where a report is read once a day.
The access control question compounds both. A row-level security gap that's fine when nobody's looking becomes the finding that fails an audit, because "anyone with database credentials can query it" is not an answer a PCI DSS or SOC 2 assessor accepts.
We scope reliability monitoring, real-time infrastructure, and access control to the tables and pipelines that actually carry the risk, and build the audit logging underneath them to the standard a PCI DSS or SOC 2 assessor will actually test.
Five Problems We See Repeatedly, and How We Handle Them
Real scenarios, not a checklist of generic capabilities.
A settlement job exits with status code 0, but a duplicated ingest already double-counted yesterday's transactions by the time finance closes the books.
We build freshness, volume, and reconciliation checks on top of the pipeline itself, so a bad number gets caught before finance does.
Data ReliabilityFraud scoring runs on an hourly batch, so a stolen card gets three more approvals before the model ever sees the transaction.
We build CDC and streaming infrastructure so risk decisions run on data that's seconds old, not hours.
Real-Time Data EngineeringA PCI DSS assessor asks who can query the cardholder table, and the honest answer is "anyone with database credentials."
We build row-level security, encryption, and audit logging mapped to the controls an assessor actually tests.
Data Governance & SecurityA payment gateway integration works in sandbox and then silently drops webhooks once real transaction volume hits production.
We build and harden the integration itself, with monitoring on the parts that fail silently under load.
Custom API Development & IntegrationsCredit risk is reviewed against static rules, so a review queue is worked in arrival order instead of by which accounts are actually most likely to default.
We build a credit risk score with reason codes from your account and transaction data, so the highest-risk cases get reviewed first, not whichever came in this morning.
Data AnalyticsTechnology We Work In
PostgreSQL for ledger and account data, Kafka for real-time event streams, Stripe and Razorpay for payment integrations, and Vault/Auth0 for encryption and access control.
We work hands-on with: PostgreSQL, Kafka, Stripe, Razorpay, Vault, Auth0.
What's Included, By Category
Reliability & Reconciliation Engineering
- Freshness, volume, and reconciliation monitoring on payment and ledger jobs
- Lineage-based root cause analysis when a number is wrong
- Data quality checks layered on existing pipelines, not a rebuild
- Incident response and on-call coverage for reliability breaks
Real-Time & Risk Infrastructure
- CDC pipelines off transactional databases for fraud and risk scoring
- Streaming architecture on Kafka for balance checks and settlement events
- Sub-second to sub-minute freshness scoped to what actually gates a transaction
- Database performance tuning for high-volume transactional load
Governance, Security & Integration
- Row-level security and column-level masking for cardholder and account data
- Encryption, key management, and audit logging mapped to PCI DSS or SOC 2 scope
- Payment gateway, KYC, and banking API integrations
- Access architecture built for what an auditor actually tests
Market Segments Served
We work with financial services and fintech companies where reconciliation, real-time decisioning, or audit scope is the actual risk.
- Payment processors and gateways handling real-time transaction volume
- Digital banks and lending platforms running core ledger and account infrastructure
- Underwriting and risk teams needing sub-minute data freshness for decisioning
- Fintech products approaching their first PCI DSS or SOC 2 audit
- Financial services companies migrating off a legacy core banking or ledger system
- Teams whose reconciliation breaks currently take days to trace back to the source
Delivery Lifecycle
Discovery & Assessment
We audit your payment, ledger, and risk pipelines for reliability gaps and map which tables are actually in PCI DSS or SOC 2 scope.
Architecture & Design
We design the monitoring, streaming, and access-control architecture for your highest-risk gaps, with an explicit call on where real-time infrastructure is worth the cost.
Build & Integration
We implement the reconciliation checks, CDC pipelines, and access controls end to end, integrated with the systems your team already runs.
Testing & Validation
We validate against real transaction data and real load, demoable before any of it touches production.
Launch & Ongoing Coverage
We document runbooks, train your team, and stay on retainer for incidents and the next compliance cycle.
Why Financial Teams Work With Us
Depth Across the Whole Stack, Not Just One Layer
A monitoring vendor watches the pipeline. A security consultant writes the policy. We bring reliability, real-time, and governance engineering as one team, so a reconciliation break and an access-control gap don't fall to two different vendors.
A Team, Not One Person's Calendar
A single in-house hire means business hours and one person's availability, with everything waiting when they're out. We bring a team behind every engagement, so a reconciliation break doesn't wait on someone's vacation.
Scoped to the Actual Risk, Not a Generic Fintech Package
Every engagement starts by mapping which tables and pipelines actually carry compliance or reconciliation risk. You get a prioritized list of what's genuinely exposed, not a boilerplate fintech audit.
No Dependency by Design
Runbooks and documentation are part of the deliverable, so your team can run what we build and hand it to an auditor without us in the room. If ongoing coverage is still the right call, we'll say why, not just assume it.
Related Services
Frequently Asked Questions
Find Out Where Your Reconciliation Actually Breaks
We schedule a call to hear what's going on, then a second call to review your pipelines and tell you directly which gaps carry real risk.