Architecture
Deciding where responsibilities live before writing features. If the boundaries are wrong, no amount of clean code inside them will help.
Full-Stack Software Developer·Backend Engineer
Building SoftwareThat SolvesReal Problems.
I’m Oluwatobiloba Olorunsanmi. I design and build practical software systems across the full stack — from backend architecture, APIs and payment workflows to modern React interfaces and third-party integrations.
Python · Django · REST APIs · React · Next.js · PostgreSQL · Celery · Redis · WebSockets · TypeScript
Open to opportunities & collaborations
Drag to rotate
01 / About
Software Developer
& Problem Solver
I build software by starting with the problem, understanding the workflow behind it, and designing systems that can support the people and businesses using them.
My work spans backend development with Python and Django, modern frontend development with React and Next.js, REST APIs, third-party integrations, payment workflows, authentication and authorisation, real-time communication, AI-enabled systems and blockchain experimentation.
I work across the full development lifecycle — from system architecture and database design to backend logic, API integration, frontend implementation and deployment.
Alongside engineering, I teach programming, AI literacy and modern tooling to young learners. Explaining a system to someone who has never written one is the fastest way I know to find out whether its boundaries are actually clear.
- Problem before code
- Server-authoritative state
- Boundaries over layers of convenience
Oluwatobiloba Olorunsanmi
Full-Stack Software Developer
System shape
Fig. 01Every project here follows the same shape: a client, an API that owns the rules, and a data layer. The differences are in what sits between them.
02 / Engineering Approach
How I Think About Software
A project is not a collection of pages. It is a set of components that have to agree with each other under load, under failure and under change. I spend most of my effort on making sure they do.
The delivery loop
Problem
Understand the workflow and who it serves.
Architecture
Place responsibilities and model the data.
Implementation
Build the backend logic and the API surface.
Integration
Wire in external services and payment flows.
Testing
Verify behaviour, boundaries and edge cases.
Deployment
Ship it, then make it observable.
Iteration
Feed real usage back into the design.
What I judge a system against
Reliability
Knowing what happens when a dependency is slow, down or lying. Failure handling is a design decision, not an afterthought.
Security
Authentication, authorisation and validation enforced on the server, because the client is an untrusted suggestion.
Maintainability
Code that a stranger can change safely. Readable structure, honest naming and tests that describe behaviour rather than implementation.
User Experience
Interface decisions driven by what the system is actually doing — showing real progress and real state instead of a spinner that hides both.
Scalability
Designing for the next order of magnitude of traffic before it arrives, so growth is a configuration change rather than a rewrite.
In practiceArchitecture → Reliability → Security → Maintainability → User Experience → Scalability. The order matters: a fast interface over an unmaintainable backend is not a good product, and a secure one that nobody can operate is not either.
03 / Technical Capabilities
What I build with, and why
Grouped by the role each technology plays, because a list of sixty badges says nothing about how you work. This is the shape of the systems I build.
Backend & Systems
Where most of my work lives — the business rules, the data model and the API surface that everything else depends on.
- PythonPrimary language
- DjangoCore framework
- Django REST FrameworkAPI layers
- REST APIsDesign & versioning
- AuthenticationJWT, sessions, OAuth
- AuthorizationPermission boundaries
- RBACRole-based access control
- Business LogicDomain rules
- Database DesignModelling & relations
- Workflow AutomationAsync & scheduled work
04 / Featured Work
Systems I have designed, built and shipped
Two of these are live products you can use right now. The rest are open repositories — the code is linked on every entry, so the claims below can be checked.
- Live
- 02
- Open repos
- 06
- Total
- 08
8 projects
01LiveLive Product · Social Platform
DestinyPair
Christian Singles Community Platform
DestinyPair is a Christian singles community platform designed for people seeking meaningful relationships, serious connections and marriage-focused community. It is the largest product I have shipped and the one that pushed me furthest as an engineer, because the difficulty was never the profile grid — it was identity, trust, discovery and the paid-intent workflow behind a relationship product.
What I built
- User authentication with email and social sign-in
- Profile creation, management and staged profile completion
- Compatibility logic and server-side matchmaking
- User discovery with filtering and ordered results
- Subscription architecture and payment workflow
- Direct messaging between permitted members
- Admin management surface
- Responsive React frontend
ReactDjangoDjango REST FrameworkJavaScriptPayment workflows
02LiveLive Product · Business Website
Pure Intentions Global Tech Services
Digital Technology Services Platform
Pure Intentions Global Tech Services is a digital technology services platform showcasing software development and technology solutions for businesses, organizations and individuals. Where DestinyPair is a product, this is a business front door — the site that has to load fast, read clearly on a phone, and turn a visitor into an enquiry without any of the usual template noise.
What I built
- Service and capability presentation for businesses and individuals
- Fully responsive, mobile-first layout
- Semantic, accessible markup with a coherent heading structure
- Clear, prominent contact and enquiry paths
- Zero framework runtime — fast first paint on mobile connections
HTMLCSSJavaScriptResponsive Design
06 / Experience
Where I have applied it
Engineering work and instruction, side by side. Teaching is not separate from building — explaining a system precisely is a large part of designing it well.
Professional Experience
Code / Web Development Instructor
Uptech Computer Training Academy
2024 — Present
Teach programming and web development across the full stack, from first principles through to deployed Django and React applications.
- Teach Python and Django for backend development, from syntax and data structures through to project structure and deployment.
- Teach JavaScript and React for frontend development, including component architecture and state handling.
- Teach HTML and CSS for responsive, accessible web interfaces, and Scratch programming for complete beginners.
- Cover programming fundamentals, web development essentials and database design with SQL.
PythonDjangoJavaScriptReactHTMLCSSScratchSQL
Code Instructor
TechCiti
Present
I teach children coding, AI literacy, and modern technology tools at TechCiti, helping young learners develop practical digital skills and understand how emerging technologies can be used creatively and responsibly.
- Combine coding education with AI literacy, so learners understand not only how to program but what these systems do.
- Introduce modern technology tools alongside programming fundamentals, and show how they fit together.
- Teach through practical, project-based work rather than exercises in isolation.
- Explain technical concepts in an age-appropriate way, without flattening the ideas into something vague.
- Discuss responsible use as well as creative use, so students build good habits alongside working ones.
Coding fundamentalsAI literacyModern technology toolsProject-based learningScratch
Online Code Tutor
TutorsZone
Present
I work as an online coding tutor with TutorsZone, teaching children in the diaspora programming and coding concepts through structured, age-appropriate lessons and practical projects.
- Deliver live online instruction to children in the diaspora, one to one and in small groups.
- Teach programming fundamentals, then apply them immediately in practical projects.
- Break technical concepts into simple, understandable ideas without reducing them to hand-waving.
- Support students from different backgrounds and locations, adjusting pace and explanation to the learner in front of me.
Online instructionProgramming fundamentalsProject-based learningScratchAge-appropriate curriculum
Full-Stack AI Systems Engineer (Sprint Operator)
Uptech Computer Training Academy
2025 — Present
Build and ship complete client systems end to end — backend architecture, API design, AI integration and the frontend that sits on top — under sprint constraints and with production-style review gates.
- Design and implement backend systems in Python and Django, including REST APIs, data models and role-based access control.
- Integrate external services and LLM APIs into working application workflows rather than isolated demos.
- Treat security, architecture and deployment criteria as acceptance gates rather than post-build cleanups.
- Work inside a sprint process with structured review, so delivery decisions are made against defined passing criteria.
PythonDjangoDRFPostgreSQLCeleryRedisReactLLM APIs
Developer & Educator
I build software systems and also teach the next generation how to understand and use technology.
Explaining a system to someone who has never written one forces you to be precise about where responsibilities live and why. Teaching programming, AI literacy and modern tooling to young learners across three organisations has sharpened that ability considerably — and it is the same discipline the engineering work in this portfolio is about, applied in a different direction.
- PythonLanguage fundamentals to application structure
- DjangoBackend development and the request lifecycle
- JavaScriptLanguage and browser runtime behaviour
- ReactComponents, state and interface architecture
- HTML / CSSSemantic markup and responsive layout
- AI LiteracyWhat these systems do, and how to use them responsibly
- ScratchProgramming concepts for absolute beginners
- Web FundamentalsHow the browser, server and network fit together
Education
B.Tech — Physics Electronics
Federal University of Technology, Akure
2016 — 2023Second Class Lower
Full Stack Development & System Logic
Uptech Computer Training Academy
2024 — 2025Technical training programme
07 / Open Source
Explore the Code
The case studies on this site describe decisions and trade-offs. The repositories are where you can check them. Every project links to its source.
- Public repositories
- 9on GitHub
- Featured here
- 08written up
- Live products
- 02deployed
Repository count from the GitHub profile. Star and contribution figures are intentionally not shown — they are not a measure of engineering work.
08 / Contact
Have a Problem Worth Solving?
I'm open to opportunities, collaborations and projects where thoughtful engineering can turn a real problem into a practical solution.
Good fits: backend systems and APIs, payment and transaction workflows, AI-enabled applications, real-time interfaces, booking and ordering platforms, role-based administration, data ingestion pipelines and Web3 work.