Backend Engineering for Fintech & Growing Tech Companies
We build payment systems, financial integrations, APIs, and cloud infrastructure for products where reliability, security, and scale matter.
Engineering Services
We focus on backend systems, APIs, and infrastructure — the technical foundation that everything else depends on.
Backend Engineering
CoreAPIs that handle your current traffic and won't break when you scale. We design backend systems that are reliable, secure, and maintainable.
- REST & gRPC APIs
- Microservices Architecture
- Database Design & Optimization
- Authentication & Authorization
- Queue Systems & Caching
- Transaction Processing
Payment & Fintech Systems
SpecialtyPayment infrastructure that processes transactions reliably across multiple providers. From payment flows to settlement and reconciliation.
- Payment Gateway Integration
- Multi-Provider Routing
- Virtual Accounts & Wallets
- Settlement & Reconciliation
- AML/KYC Integration
- Transaction Monitoring
API & Integration Engineering
Connect your systems to banks, payment providers, and third-party services without building fragile point-to-point connections.
- Banking & Payment APIs
- Identity Verification
- Financial Data Providers
- Webhook Infrastructure
- Provider Abstraction Layers
- Error Handling & Retries
Cloud & Infrastructure
The infrastructure that keeps your systems running. Deployment, scaling, monitoring, and the DevOps practices that make operations predictable.
- Docker & Kubernetes
- CI/CD Pipelines
- Cloud Deployment (AWS, GCP)
- Monitoring & Observability
- Performance Optimization
- Cost Management
Backend Modernization
Migrate legacy systems, reduce technical debt, and improve performance without breaking what works.
- Legacy System Migration
- API Modernization
- Database Migration
- Performance Tuning
- Architecture Refactoring
- Technical Debt Reduction
A different kind of engineering partner
Production Experience
Not theoretical architecture. Real systems processing real transactions in production fintech environments.
Integration Expertise
Payments, banking APIs, identity verification, and third-party systems. We know where the edge cases and failure modes live.
Direct Senior Engineering
No layers of account managers between you and the engineer. You work directly with the people building your system.
We typically help when...
- Your backend is becoming a bottleneck
- You need multiple payment providers integrated
- Your system has accumulated technical debt
- You're launching a transaction-heavy product
- Your engineering team needs additional backend capacity
- Your infrastructure needs to become more reliable
Built on Production Fintech Experience
I founded Chelon Labs to help growing technology companies solve the backend, integration, and infrastructure problems that become expensive as products scale.
Before starting this studio, I spent years building backend infrastructure for a Nigerian fintech company processing ₦106M+ in monthly transactions. I've integrated 6 different payment providers, built transaction systems handling thousands of daily payments, and optimized cloud infrastructure to cut costs by 25% while improving response times by 40%.
I've built the systems that most agencies only diagram — payment gateways, multi-provider transaction routing, settlement workflows, and the cloud infrastructure that keeps them running at scale.
When you work with Chelon Labs, you get direct access to senior engineering expertise focused entirely on your backend and infrastructure challenges. No layers of account managers. No handoffs to junior developers.
Let's Discuss Your Project
Whether you need a complete system built, an existing platform improved, or strategic technical guidance — we're here to help. Tell us about your challenge and we'll respond within 24 hours.
How We Work
- Discovery CallUnderstand your requirements, timeline, and constraints
- Proposal & ScopeDetailed technical approach with clear deliverables
- Build & IterateRegular updates, transparent progress, quality code