Backend Software Engineer · Enterprise Platforms · Payment Infrastructure · Distributed Systems · Java · Spring Boot · AWSAvailable for new projects

Backend Software EngineerEnterprise PlatformsPayments · FinTech · Distributed Systems

I build backend platforms that power enterprise applications, banking systems, and payment infrastructure — reliable, scalable, and built for long-term evolution.

Enterprise PlatformsPayment InfrastructureDistributed SystemsJava & Spring Boot

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Dakar, Senegal (GMT) — open to international freelance & contract engagements. · Start a project

Trusted by teams building in demanding industries

BankingFintechCredit SystemsHealthcareEnterprise SaaS

Companies

Experience

Banking, fintech, and enterprise systems — contexts where correctness, compliance, and reliability are non-negotiable.

Full experience

Synapse Groupe
Backend Engineer — Banking Systems
Feb 2025 — Present
Designed and evolved backend services for payments, transfers, and transaction processing — supporting enterprise banking platforms across 11+ Bank of Africa subsidiaries.
ENG Technologie Group
Software Engineer — FinTech & Payments
Jul 2023 — Feb 2025
Contributed to a FinTech platform supporting digital lending, payment processing, and financial operations — designing and implementing backend microservices for customer onboarding and payment workflows.
Mafalia — Ecom & Fintech Applications
Software Engineer — SaaS Platform
Jun 2022 — Nov 2023
Built backend services and REST APIs supporting inventory management, order processing, sales, and financial workflows for a SaaS platform helping SMEs manage operations.
SarayaTech Senegal
Software Engineer
Dec 2021 — May 2022
Developed backend services and full-stack features supporting patient management, consultations, prescriptions, and healthcare workflows on a clinical platform.

Full experience

Core capabilities

Where production fintech systems are won — six areas of depth from ledger design to mobile money at scale.

Strategic Payment Platforms

Design and deliver robust payment ecosystems built for regulatory certainty, frictionless scaling, and sustained business growth. Architect bulletproof idempotent payment rails, automate reconciliation workflows, and strategically optimize provider routing to accelerate market expansion and maximize revenue.

Stack

Java (8/11/17/21)Spring BootPostgreSQLRedisApache Kafka

Patterns

Double-entry & subledgering
Clearing & settlement automation
Cross-provider orchestration
Deep idempotency
Regulatory compliance controls

Pro Enterprise Backend Engineering

Engineer enterprise-grade backends engineered for agility, auditability, and secure operation. Apply advanced clean architecture, decoupled modularity, and resilient business logic to ensure reliability and future-proof evolution without risky rewrites. Go beyond best-practices for fintech-grade platforms.

Stack

Java (8/11/17/21)Spring BootPostgreSQLApache KafkaSpring SecuritySpring CloudSpring BatchSpring DataSpring Integration

Patterns

Strategic Domain-Driven Design (DDD)
Bounded context orchestration
ACID & eventual consistency
Event-driven/CQRS patterns
Pattern-driven outbox
Composable modularity
Zero-trust multi-tenancy

Strategic API Architecture

Construct API infrastructures as true business leverage: governed, secure interfaces for partner integrations, product layering, and rapid iteration. Lead API marketplaces and ecosystems with strong contract management, full-lifecycle observability, and pro-level scalability.

Stack

OpenAPI/SwaggerSpring Cloud GatewayJWTWebhooksHMACAPI ManagementAsyncAPI

Patterns

Backward & forward-compatible APIs
Contract-first design
Configurable rate limiting
Secure/automated partner provisioning
Observable & traceable endpoints

Distributed Systems Engineering

Engineer truly resilient, distributed event-driven platforms to withstand volatility, regulatory stress, and hyperscale volumes. Leverage strategic patterns to minimize downtime, guarantee data integrity, and seamlessly route traffic across clouds or regions.

Stack

Apache KafkaDockerKubernetesAWS

Patterns

Saga orchestration patterns
Transactional outbox
Advanced circuit breaking
Reliable message logistics
Multi-region/geo-replication

Production Cloud & DevOps Excellence

Deliver pro-grade DevOps for regulated fintech launches: automate delivery end-to-end, enforce infrastructure as code, and implement robust monitoring. Secure, scale, and operate global workloads with strategic SLOs and audited automation for best-in-class resilience.

Stack

AWSKubernetesDockerTerraformGitLab CI/CD

Patterns

SLO/SLI-centric operations
Full GitOps automation
Blue/green & canary deployments
Autonomous rollback/zero downtime
Proactive cost optimization

Unified Mobile Money Integrations

Accelerate time-to-market with a strategic, unified API abstraction for Orange Money, Wave, MTN, and local wallets. Standardize diverse integration logic, enforce reliability, guarantee reconciliation, and launch new corridors with a partner-grade single interface.

Stack

Java (8/11/17/21)Spring BootPostgreSQLRedisApache KafkaSpring SecuritySpring CloudSpring BatchSpring DataSpring Integration

Patterns

Provider-pluggable adapters
Webhook normalization & reliability
Automated audit trails
Auto-reconciliation & ledger sync
Provider-agnostic routing
System-wide idempotency
Enterprise financial controls

Delivery outcomes

Measured impact across regulated environments.

Profile-backed results from banking, fintech, and SaaS delivery — not vanity uptime claims.

Production years

Backend delivery across banking, fintech, healthcare, and SaaS platforms

11+

Banking subsidiaries

Enterprise banking platforms supported via Synapse for Bank of Africa Group

30%

Faster API responses

Measured improvement from Mafalia SaaS backend and database optimization

Credentials obtained

Java, software design, engineering essentials, and digital banking fundamentals

Reliability design standard

Production-ready

Target posture for mission-critical backends

100%Degraded

Infrastructure principles

Idempotency by default — every write operation is safe to retry
Event sourcing for financial state — full audit trail, always
Zero-trust security model — never trust, always verify
Observability as a first-class concern — not an afterthought

Featured projects

Case studies built for enterprise credibility.

Investor-ready narratives — problem, architecture, security, scale, and measurable outcomes.

View full case studies

Product preview

01Live

Ecom 360 PME

All-in-one commerce platform: tactile POS, real-time inventory with low-stock alerts, Wave & Orange Money tied to each sale, multi-store management, customer credits, and accountant-ready PDF/Excel exports.

500+

Active merchants

< 5 min

Time to start

AngularSpring BootMySQLWaveOrange Money

View Ecom 360 PME

Product preview

02In development

Pan-African Payment SDK

Unified SDK exposing one API for initiate, confirm, and reconcile flows — provider-specific adapters behind a stable contract.

Providers unified

60%

Faster integration

JavaSpring BootRedisKafkaPostgreSQL

Product preview

03In development

Double-Entry Ledger System

High-consistency ledger with double-entry postings, immutable audit log, and transactional guarantees on every money movement.

100%

Audit coverage

Ledger incidents

JavaSpring BootPostgreSQLKafka

Product preview

04In development

Unified API Gateway

Enterprise gateway centralizing auth, routing, rate limits, and provider orchestration behind versioned REST APIs — consultant-grade governance for regulated banking integrations.

Partner integrations

99.9%

Uptime target

Spring CloudKafkaPostgreSQLDockerAWS

Product preview

05Delivered

School Management SaaS

Modern multi-tenant SaaS for admissions, billing, staff, and reporting — built for African school operations.

Departments unified

35%

Admin time saved

AngularSpring BootPostgreSQLREST APIs

View full case studies

Services

For enterprises, fintechs, and ambitious product teams

Expert backend and payment integration services — architect, integrate, or modernize critical financial and enterprise systems, delivered by a seasoned consultant.

Enterprise Backend Architecture & Modernization

Future-proof your platform: migrate legacy systems, design robust cloud-native backends, and ensure resilience, observability, and compliance for enterprise-scale fintech and payment workloads.

Payment Integration & Unified API Adapters

Integrate local and global payment providers (banks, PSPs, wallets) under a single, stable contract. Standardize payment flows, enforce idempotency, and streamline onboarding — no more custom one-offs.

Fintech Product Launch & MVP Acceleration

For startups or new business lines — get a launch-ready MVP built on real payment infrastructure: ready to demo, fund, and extend, with best-practice documentation and auditability.

Secure API Gateways & Partner Onboarding

Design and deploy partner API gateways for regulated products: secure auth, granular access control, auditing, traffic management, and simplified onboarding for banks and PSPs.

Cloud DevOps & SRE for Payments

Deploy and operate payment infrastructure with blue/green or canary delivery, GitOps automation, real SLOs, and scalable, cost-optimized cloud — for always-on regulated services.

Technical Due Diligence & Codebase Audits

Independent code, integration, and cloud audits for M&A, investment, or compliance — get clear, actionable findings and risk assessments from a hands-on backend payments expert.

Discuss your backend needs

Strategic Production Stack

Expertly curated technology suite for high-stakes freelance and consulting projects — engineered for robust fintech platforms, future-proof partner integrations, and seamless handoff to your teams.

Backend

Java (8/11/17/21, pro-grade LTS)Spring Boot (enterprise-ready)Spring Security (advanced)Spring Cloud (distributed systems)Spring Batch (resilient processing)Spring Data (high-integrity data access)Spring Integration (modular orchestration)

Frontend

Angular (enterprise UX)React (scalable SPAs)Next.js (SSR/SEO optimization)TypeScript (strict reliability)Tailwind CSS (pro-grade design system)JavaScript (ESNext best-practices)React Router (strategic routing)React Query (expert state/data)

Data & Cache

Oracle (mission-critical workloads)PostgreSQL (open-core reliability)Redis (low-latency caching)MySQL (global compatibility)MongoDB (flexible document storage)Cassandra (massive scalability)Elasticsearch (pro search and analytics)

Messaging & APIs

RabbitMQ (enterprise brokers)Apache Kafka (event streams, at scale)OpenAPI (strategic API design)REST APIs (industry standard)GraphQL (efficient data fetching)gRPC (high-performance RPCs)Webhooks (real-time integration)Spring Cloud Gateway (secure API routing)

Cloud & Delivery

Jenkins (expert CI/CD pipelines)Git (strategic source control)Docker (portable containers)Kubernetes (pro orchestration)AWS (enterprise cloud)GCP (global scale)GitLab CI/CD (modern automation)OpenTelemetry (full-stack observability)Prometheus (metrics at scale)Grafana (pro dashboards)ELK Stack (log intelligence)Splunk (compliance analytics)Datadog (end-to-end monitoring)Sentry (expert error tracking)

Fintech & Consulting

Payment gateways & digital wallets (global reach)Mobile money platforms (emerging markets)Automated reconciliation (audit-ready)ISO 20022 & SWIFT messaging (standard compliance)Payment service provider (PSP) ecosystems (unified APIs)Domain-driven design (strategic DDD)Modular, clean architectures (future-proof)Event-driven & CQRS patterns (scalable design)Outbox, Saga, and orchestration patterns (expert reliability)

Credentials

Validated expertise you can trust

View all credentials

Cert
Java Intermediate
Professional certification
Certified
Cert
Software Design: From Requirements to Release
Professional certification
Certified
Cert
Software Engineering Essentials
Professional certification
Certified
Cert
Digital Banking Fundamentals
Professional certification
Certified

Engineering Principles

Unyielding standards for financial systems — every build engineered for trust, scale, and longevity.

Scalability

Systems architected for growth: horizontal scaling, resilient async workflows, and extensible data models that enable expansion without rewrites.

Reliability

Failure-tolerant by design — from idempotent operations and automated retries to robust fallbacks. Because real-world networks are unpredictable, but your uptime can’t be.

Security

Zero-trust methodology, signed interactions, strict least-privilege, and immutable audit logs embedded in every flow. Security is woven in, never layered on.

Maintainability

Modular by default: precise boundaries, clear contracts, and self-documenting APIs, for codebases your team can iterate on with confidence.

Performance

User-centric profiling, nuanced caching strategies, and explicit latency SLAs — performance as a feature, measured where it matters most.

Clean Architecture

Business logic at the core. Infrastructure details isolated at the edge — so your platform adapts to change, not the other way around.

Observability

Deep instrumentation, actionable telemetry, and proactive alerting empower rapid diagnosis and continuous improvement.

Work process

A proven delivery workflow for freelance and contract engagements — transparent, predictable, enterprise-ready.

Discovery

Goals, constraints, stakeholders, and success metrics — aligned before architecture or estimates.

Architecture

System design, data contracts, security model, and phased roadmap with explicit trade-offs.

Development

Incremental delivery with reviews, CI/CD, and demos tied to business milestones.

Testing

Unit, integration, and regression coverage — plus failure injection where money moves.

Deployment

Production rollout, runbooks, monitoring, and handoff your team can operate.

Optimization

Post-launch tuning — latency, cost, and reliability improvements from real traffic data.

Engagement patterns

What teams typically need from senior backend delivery — representative outcomes, not attributed client quotes.

“Credit and mobile-money flows delivered with regulated-environment rigor — shorter integration cycles and stable post-launch operations.”
FinTech delivery
Digital lending & wallets
West Africa

“API and event boundaries defined before implementation — reducing rework when partner integrations and multi-entity scope grow.”
Banking & middleware
Enterprise API programs
Regulated financial services

“Clear communication with product, integration, and compliance stakeholders — suited to embedded contract and freelance backend work.”
Contract engineering
Senior backend embed
SaaS & platform teams

Engineering Insights

Deep dives on building resilient payment systems, scaling backends, and real-world lessons from African fintech landscapes.

Browse all insights

Insight

Designing a banking middleware for multi-subsidiary organizations

How to protect core banking systems while exposing governed APIs, partner integrations, and observable money flows across multiple entities.

Architecture Decision

ADR: Why a double-entry ledger for payment systems

A short architecture decision record for choosing accounting correctness, auditability, and reconciliation over a simple mutable balance table.

Insight

Why most SaaS fail in Africa

Beyond the landing page: payments, distribution, and trust assumptions that don’t survive first contact with the market.

Browse all insights

About

Backend Software Engineer — Enterprise Platforms, Banking & Payment Infrastructure

I build backend platforms that power enterprise applications, banking systems, and payment infrastructure — with a focus on reliability, scalability, and long-term evolution.

I'm passionate about backend engineering, enterprise platforms, FinTech, and software architecture — and I enjoy partnering with product, integration, and engineering teams to ship production-ready solutions.

Production Years

20+

Platforms Launched

GMT

Based in Dakar · Working Globally

See full profile

Backend Software Engineer

Enterprise Platforms · Payment Infrastructure · Banking Systems

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Backend Software EngineerEnterprise PlatformsPayments · FinTech · Distributed Systems

I build backend platforms that power enterprise applications, banking systems, and payment infrastructure — reliable, scalable, and built for long-term evolution.

Enterprise PlatformsPayment InfrastructureDistributed SystemsJava & Spring Boot

Dakar, Senegal (GMT) — open to international freelance & contract engagements. · Start a project

Backend Software Engineer — Enterprise Platforms, Banking & Payment Infrastructure

I build backend platforms that power enterprise applications, banking systems, and payment infrastructure — with a focus on reliability, scalability, and long-term evolution.

Production Years

20+

Platforms Launched

GMT

Based in Dakar · Working Globally

See full profile