Available for software engineering roles

Software Engineerbuilding secure, scalable web applications, FinTech platforms & enterprise software.

I'm Kingsley Marfo — a full-stack and backend engineer who designs and ships production software: payments, BNPL, authentication, KYC and role-based enterprise platforms.

View projects Download CVContact me
United Kingdom GitHub LinkedIn
Kingsley Marfo, Software Engineer
Professional portrait
Software EngineerFull-Stack DeveloperBackend DeveloperFinTech EngineerEnterprise Software Engineer
0+Production projects shipped
0+Technologies worked with
0%Full-stack ownership
0+Years writing code
Selected work

Production systems, not throwaway demos

Each project is a real system with real constraints. Every card links to an in-depth technical case study.

All projects
F

FinTech · E-commerce · Full-Stack

2024

Production

Flayona

A production commerce platform for imported goods in Ghana — card and Mobile Money payments, a Buy-Now-Pay-Later engine with credit scoring, KYC onboarding, and four separate authenticated portals, all built in vanilla PHP + MySQL.

PHPMySQLPaystackMobile MoneyPWA
Read case study
O

Enterprise · Cloud · Full-Stack

2025

Production

OpFix

OpFix is a cloud-based Maintenance Management System built as my BSc final-year project — a FastAPI + PostgreSQL backend and a React SPA, with role-based access, a multi-party job workflow state machine, audit logging, SLA tracking and reporting.

FastAPIPostgreSQLReactSQLAlchemyRender
Read case study
J

Client · WordPress · Web

2024

Client project

Julli Jets

A live, commercial private jet, helicopter and yacht charter website (jullijets.co.uk) — built and maintained on WordPress/Elementor through a custom two-layer PHP system that generates the page layouts programmatically.

WordPressElementorPHPJavaScript
Read case study
How I work

An engineering mindset

I don't just make things work — I make them correct, maintainable and fast. Here's what that looks like in practice.

Security & correctness first

When software touches money or identity, correctness isn't optional. I design around invariants, validation and auditability from day one.

Clear architecture

Explicit boundaries, state machines over boolean flags, and business logic in one place — code that's easy to reason about and change.

Performance that ships

Fast by default: sensible rendering, optimised assets and a real eye on Core Web Vitals and Lighthouse.

Accessible by default

Semantic markup, keyboard support and WCAG compliance — because software should work for everyone.

Capabilities

A full-stack toolkit, backend-leaning

The languages, frameworks and practices I use to design, build, secure and ship production software.

Languages

Typed and dynamic languages I ship production code in.

PHPPythonJavaScriptTypeScriptSQLHTML5CSS3

Frameworks

For building web apps, APIs and interfaces.

FastAPIReactNext.jsViteTailwind CSSWordPress / Elementor

Backend

Designing services, domain models and business logic.

REST APIsSQLAlchemy ORMAlembic migrationsMVC architectureWebSocketsCron / scheduled jobs

Databases

Relational modelling, migrations and query design.

MySQLPostgreSQLSupabaseSchema designNormalisationSoft deletes

Cloud & DevOps

Shipping and operating software in production.

RenderSupabaseIONOSGit & GitHubPWA / Service WorkersCI

Security

Protecting users, data and money.

RBACJWT & bcryptTOTP / 2FACSRF protectionKYC & credit scoringAudit logging

APIs & Payments

Integrating third-party platforms reliably.

PaystackMobile Money (MoMo)WhatsApp APISMS / OTPWebhooksIdempotency

Tools

The day-to-day engineering toolchain.

GitGitHubVS CodepytestPostmanAlembicFigma

Engineering

How I think about building software.

System designWorkflow state machinesAccessibility (WCAG)Automated testingTechnical writingPerformance

Let's build something reliable.

I'm looking for a software engineering role where I can design and ship production systems. If that sounds like your team, I'd love to talk.

Get in touch Download CV