Recruiter view

Saïfoulaye Diallo

Senior Backend Engineer. Payments and financial systems. Based in Dakar, working remote worldwide.

Currently consulting at Synapse Groupe on backend modernization for 11+ Bank of Africa subsidiaries.

Before that: FinTech and payments at ENG Technologie, SaaS for merchants at Mafalia, and Ecom 360 — a product I run, live with 10+ merchants.

Book a call

Availability: Open to senior roles and select engagements — Q1 2027.
Location: Dakar, Senegal · remote worldwide · GMT
Languages: French, native. English, professional working.

Trajectory

Feb 2025 — Present
Senior Backend Engineer — Banking Platforms (Consultant)
Synapse Groupe · Bank of Africa — Groupe Bank of Africa
Ngor, Dakar, Senegal
- Backend modernization (Java / Spring Boot, multi-tenancy, clean architecture) on Bank of Africa Group platforms that serve 11+ subsidiaries — standardizing integration patterns and raising maintainability of core services.
- Designed secured REST APIs and gateway-style boundaries (versioned contracts, JWT / RBAC, audit logging) plus append-only reconciliation so money movement stays explainable for finance and compliance. Ownership with product, QA, and engineering on high-availability delivery (Docker, Kubernetes, CI/CD).
Jul 2023 — Feb 2025
Backend Engineer — FinTech & Payments
ENG Technologie Group
Dakar-Plateau, Senegal
- Owned backend microservices for digital lending, customer onboarding, and payment workflows on a FinTech platform in production.
- Integrated Wave and Orange Money; designed Kafka event flows with explicit idempotency so retries cannot double-debit. Hardened APIs with Spring Security and improved payment operations reliability on AWS (Docker, GitLab CI/CD).
Jun 2022 — Nov 2023 · parallel with ENG from Jul 2023
Software Engineer — SaaS Platform
Mafalia — Ecom & Fintech Applications
Dakar Region, Senegal
- Built multi-tenant backend services and REST APIs for inventory, orders, sales, and financial workflows helping SMEs run operations.
- Improved performance via query optimization, caching, and async processing — keeping reporting off the collection path so checkout stays responsive.
Dec 2021 — May 2022
Software Engineer
SarayaTech Senegal
Senegal
- Developed backend services and domain features supporting patient management, consultations, prescriptions, and healthcare workflows on a clinical platform.
- Designed secure and scalable REST APIs across multiple business modules. Improved performance through caching and asynchronous processing; participated in code reviews and testing.

Core stack

Languages: Java (8–21) · SQL
Frameworks: Spring Boot · Spring Security · Spring Cloud
Data & messaging: PostgreSQL · Redis · Apache Kafka
Cloud & ops: Docker · Kubernetes · AWS · GitLab CI
AI: LLM applications · RAG · Tool calling

AI is exploration beside production work, not a claim of shipped agent platforms.

Recommendations

Named recommendations are on LinkedIn.

CV

Saïfoulaye Diallo

Senior Backend Engineer. Payments and financial systems. Based in Dakar, working remote worldwide.

Currently consulting at Synapse Groupe on backend modernization for 11+ Bank of Africa subsidiaries.

Before that: FinTech and payments at ENG Technologie, SaaS for merchants at Mafalia, and Ecom 360 — a product I run, live with 10+ merchants.

Book a call

Trajectory

Feb 2025 — Present

Senior Backend Engineer — Banking Platforms (Consultant)

Synapse Groupe · Bank of Africa — Groupe Bank of Africa

Ngor, Dakar, Senegal

Backend modernization (Java / Spring Boot, multi-tenancy, clean architecture) on Bank of Africa Group platforms that serve 11+ subsidiaries — standardizing integration patterns and raising maintainability of core services.
Designed secured REST APIs and gateway-style boundaries (versioned contracts, JWT / RBAC, audit logging) plus append-only reconciliation so money movement stays explainable for finance and compliance. Ownership with product, QA, and engineering on high-availability delivery (Docker, Kubernetes, CI/CD).

Jul 2023 — Feb 2025

Backend Engineer — FinTech & Payments

ENG Technologie Group

Dakar-Plateau, Senegal

Owned backend microservices for digital lending, customer onboarding, and payment workflows on a FinTech platform in production.
Integrated Wave and Orange Money; designed Kafka event flows with explicit idempotency so retries cannot double-debit. Hardened APIs with Spring Security and improved payment operations reliability on AWS (Docker, GitLab CI/CD).

Jun 2022 — Nov 2023 · parallel with ENG from Jul 2023

Software Engineer — SaaS Platform

Mafalia — Ecom & Fintech Applications

Dakar Region, Senegal

Built multi-tenant backend services and REST APIs for inventory, orders, sales, and financial workflows helping SMEs run operations.
Improved performance via query optimization, caching, and async processing — keeping reporting off the collection path so checkout stays responsive.

Dec 2021 — May 2022

Software Engineer

SarayaTech Senegal

Senegal

Developed backend services and domain features supporting patient management, consultations, prescriptions, and healthcare workflows on a clinical platform.
Designed secure and scalable REST APIs across multiple business modules. Improved performance through caching and asynchronous processing; participated in code reviews and testing.

Core stack

Languages

Java (8–21) · SQL

Frameworks

Spring Boot · Spring Security · Spring Cloud

Data & messaging

PostgreSQL · Redis · Apache Kafka

Cloud & ops

Docker · Kubernetes · AWS · GitLab CI

LLM applications · RAG · Tool calling

AI is exploration beside production work, not a claim of shipped agent platforms.