Technical Founder / Fractional CTO / Product Architect

Build Ambitious
Platforms

Product-focused engineering

I help founders and engineering leaders build scalable SaaS platforms with clean architecture and rapid iteration.

I design and ship real platforms across education, sustainability, and operational systems. This portfolio is built to show architecture judgment, delivery discipline, and product thinking, not just interface polish.

Architecture

01

Systems design, platform boundaries, delivery sequencing, and scaling decisions.

CTO-level framing
>Discovery
Delivery

Product Thinking

02

Discovery-led execution with practical scope control and outcome-focused prioritisation.

Founder-aware

Delivery

03

Fast iteration with strong foundations across APIs, frontend, data, and deployment.

Hands-on build

Case Studies

04

Clear narratives on tradeoffs, constraints, architecture decisions, and what shipped.

Signal over polish

About

Improve outcomes with architecture-led execution.

I work end-to-end across discovery, architecture, implementation, deployment, and iteration. I care about systems that scale cleanly and products that create value early.

Strengths

Architecture, full-stack delivery, product strategy

Stacks

React/Next, MERN, Flutter, Postgres, Azure

Delivery style

Fast iteration with strong foundations

Focus

Practical systems, measurable outcomes

Projects

Shipped platforms, not concept work.

A selection of products and systems across education, sustainability, and field operations. Each project reflects product decisions, architecture constraints, and execution tradeoffs.

Maps & Pathways

01

Multi-tenant platform connecting runtime workflows, collaboration, and tenant ops tooling.

Multi-tenant talent platform ecosystem spanning core product workflows, realtime collaboration, tenant ops tooling, and supporting web/CMS surfaces.

Impact: unified product runtime and control-plane operations

React + MUIExpress + MongoSocket.IOPlatform Ops

Deovise

02

Food product insights platform for emissions analytics and scenario-driven decision support.

Multi-service food product insights platform for emissions analytics, ingredient alternatives, and scenario-driven decisions.

Impact: faster sustainability analysis and admin decision workflows

React + MUIExpressPostgresPython Functions

EstateOps

03

Estate operations proof of concept unifying asset, compliance, and field capture flows.

Proof-of-concept estate operations platform for portfolio-scoped assets, compliance, and field capture across web and mobile clients.

Impact: improved operational visibility across web and mobile

Express + MongoReact + ViteFlutterR2 + Geo

ALT Coach

04

CPD tracking platform covering coaching workflows, lesson visits, and observation evidence.

Multi-tenant CPD tracking platform for lesson visits, coaching, guides, and video observations across web and mobile clients.

Impact: streamlined coaching operations across devices

Node + MongoReact + MUIFlutterVideo Ops

Curious Puffin

05

Retail field capture platform with direct-to-storage media workflows and geospatial store lookup.

Retail photo capture platform with Flutter mobile app, Node/Express API, and Cloudflare R2 direct uploads for field workflows.

Impact: faster media capture and reduced backend transfer load

FlutterExpress + MongoR2 UploadsGeo Search

SheIsAction

06

Social sports platform combining realtime messaging, discovery, moderation, and brand workflows.

MERN social networking platform for women in sports with realtime messaging, geospatial discovery, brand content workflows, and admin moderation tooling.

Impact: stronger community engagement and safer platform operations

MERN + Socket.IOMUI + ReduxGeo + SearchBrands + CMS

Tip: shift + mousewheel (or trackpad) to scroll the carousel.

Case studies

The thinking behind what shipped.

Structured write-ups focused on the problem, architecture decisions, constraints, tradeoffs, and outcomes.

Deovise • Architecture Snapshot

Multi-service emissions and alternatives platform with strong admin governance.

The portfolio signal here is not just UI polish. Deovise combines a React admin experience, a Node API security layer, and Python function services for emissions aggregation and ingredient recommendations, backed by Postgres and denormalised read models.

JWT auth + password reset flowsMUI X Data Grid Pro admin workflowsProduct versioning, diffing, and restoreEmissions proxy with Postgres fallback pathIngredient swap options feeding recommender logicPython services with SQLAlchemy + pandas

Platform

Monorepo architecture spanning a React 18 + MUI admin app, Node/Express API, and Python Azure Function Apps.

Security Boundary

Browser traffic goes through Express proxy routes so Function App keys stay server-side, with fallback handling built in.

Data Layer

Postgres-backed services with pg, JSONB version snapshots/diffs, and denormalised views for fast emissions reads.

Governance

Multi-tenant organisations, role-gated admin workflows, soft delete lifecycle patterns, and cached role checks.

Maps & Pathways

01

Multi-tenant platform connecting runtime workflows, collaboration, and tenant ops tooling.

Multi-tenant talent platform ecosystem spanning core product workflows, realtime collaboration, tenant ops tooling, and supporting web/CMS surfaces.

Impact: unified product runtime and control-plane operations

React + MUIExpress + MongoSocket.IOPlatform Ops

Deovise

02

Food product insights platform for emissions analytics and scenario-driven decision support.

Multi-service food product insights platform for emissions analytics, ingredient alternatives, and scenario-driven decisions.

Impact: faster sustainability analysis and admin decision workflows

React + MUIExpressPostgresPython Functions

EstateOps

03

Estate operations proof of concept unifying asset, compliance, and field capture flows.

Proof-of-concept estate operations platform for portfolio-scoped assets, compliance, and field capture across web and mobile clients.

Impact: improved operational visibility across web and mobile

Express + MongoReact + ViteFlutterR2 + Geo

ALT Coach

04

CPD tracking platform covering coaching workflows, lesson visits, and observation evidence.

Multi-tenant CPD tracking platform for lesson visits, coaching, guides, and video observations across web and mobile clients.

Impact: streamlined coaching operations across devices

Node + MongoReact + MUIFlutterVideo Ops

Curious Puffin

05

Retail field capture platform with direct-to-storage media workflows and geospatial store lookup.

Retail photo capture platform with Flutter mobile app, Node/Express API, and Cloudflare R2 direct uploads for field workflows.

Impact: faster media capture and reduced backend transfer load

FlutterExpress + MongoR2 UploadsGeo Search

SheIsAction

06

Social sports platform combining realtime messaging, discovery, moderation, and brand workflows.

MERN social networking platform for women in sports with realtime messaging, geospatial discovery, brand content workflows, and admin moderation tooling.

Impact: stronger community engagement and safer platform operations

MERN + Socket.IOMUI + ReduxGeo + SearchBrands + CMS

Business impact

Technical decisions tied to outcomes.

I focus on practical architecture choices that improve delivery speed, reduce risk, and create clearer product momentum.

Faster Delivery

Shape architecture and scope so teams can ship usable value early, then iterate without costly rewrites.

Reduced Execution Risk

Define service boundaries, security constraints, and operational workflows early to avoid downstream instability.

Clear Product Signals

Connect technical decisions to measurable product outcomes so both technical and non-technical stakeholders can track progress.

Endorsements

Independent recommendations from real collaborators.

Recommendations from collaborators across Maps and Pathways, ALT Coach, and Deovise, covering product thinking, technical execution, and delivery style.

Phil Beecher

CEO, Maps and Pathways; CFO, Active Learning Trust

Yomi works with Phil as co-founder of Maps and Pathways and through Active Learning Trust.

9th March 2026

Working with Yomi on the Maps and Pathways platform has been an incredibly positive experience. From the very early concept stage through to a fully operational platform used by thousands of users, Yomi has been central to bringing the vision to life.

Yomi has led the technical design and implementation of the system from day one. What stands out most is his ability to translate ideas into practical, well-structured solutions that genuinely work for organisations. The platform has been built in a way that allows us to continue expanding its capabilities as the needs of our users evolve, which has been critical as adoption has grown.

Beyond his technical expertise, Yomi has been a true partner in the development of Maps and Pathways. He regularly contributes to product thinking, attends client workshops and meetings, and supports conversations with potential customers to help ensure the platform delivers real value in practice. His willingness to engage directly with users and stakeholders has played an important role in shaping the platform and ensuring it solves the right problems.

When prospective clients see the platform for the first time, they very quickly recognise what it enables and the gap it fills in their current systems. A huge part of that is down to Yomi's insight, technical capability, and commitment to delivering a robust and scalable product.

I would happily recommend Yomi to anyone looking for a technical partner who can take an idea from concept through to a mature, production-ready platform while working collaboratively with stakeholders along the way.

mapsandpathways.com

Graham Parker

Academy Improvement Lead, Active Learning Trust

Yomi worked with Graham on the ALT Coach platform.

6th March 2026

Working with Yomi has been an absolute win.

He's one of those rare engineers who truly embodies discovery-led execution - he takes the time to properly understand the problem before jumping into solutions, which means the work that comes out the other side is thoughtful, clean, and built to last.

Yomi is incredibly thorough and organised, but what really stands out is how collaborative he is. He communicates clearly, keeps everyone aligned, and makes the whole process feel smooth rather than stressful. You always know where things stand, and deadlines are consistently met.

If you're looking for a technical partner who combines solid technical execution with great team energy, Yomi is exactly that. Smart, reliable, and great to work with - I'd happily collaborate with him again anytime.

activelearningtrust.org

Lars Kristensen

Data Scientist, Insights & Coffee

Yomi was Lars' client on the Deovise platform.

18th February 2026

I worked with Yomi on a project taking data science from early-stage startup work to scalable, production solutions and exploring future AI possibilities for the portfolio.

Yomi is a conscientious, highly competent collaborator who swaps fluidly between business strategy and technical execution. He is a true "Swiss-army-knife" of technology and has a rare ability to quickly learn and adapt on the fly, exemplified by how quickly he picked up Python and SQL for our project despite coming from a primarily web-focused stack.

Yomi is a genuinely nice person who truly cares about his teammates and the work. I have really enjoyed our collaboration and would recommend him for anything - from scaling an AI portfolio to looking after my kids.

insightsandcoffee.com

Now building

Current areas of momentum.

EstateOps: portfolio-scoped asset and compliance operations proof of concept across web and mobile

Deovise: emissions modelling, ingredient alternatives, and scenario tooling for food product decisions

Multi-tenant reporting and collaboration features for education platforms

Contact

Talk about your problem — let's solve it.

If you need product thinking with engineering depth, I can help you scope the right system and ship with confidence.