Elizabeth Adejumo

From chartered engineer to
software engineer
— by choice, not accident.

Also known as a stem mentor.

Full-Stack Software Engineer. Formerly a Chartered Mechanical Engineer (CEng, MIMechE). Self-taught into Tech. This is the record of that whole journey.

01

The career switch

I spent over five years as a Mechanical Engineer at a global engineering and infrastructure consultancy, promoted three times — from graduate engineer to senior engineer — before a year as Assistant Project Manager and chartering (CEng, MIMechE) in 2022. Frustrated by how much of that role relied on manual, repetitive processes, I taught myself Python to automate my own workload — chasing invoices, parsing contractor emails, wrangling spreadsheets. That first project is still on GitHub — the actual starting point, not just a line on a CV. It gave me the confidence to leave a career I'd trained years for and switch into tech entirely, around three and a half years ago.

Both roles left their mark. The structured, safety-conscious rigor of mechanical engineering shows up in how I approach system design and code review; the stakeholder management and risk communication I built as a Project Manager now shapes how I lead cross-team migrations and mentor engineers finding their way into the industry.

Flagship Work — Platform Migration
Took full ownership of a critical platform migration and its post-launch stabilisation. The framework I designed is now the official blueprint for every migration that's followed.
Production error rate, post-release
89,085
Jan 2026
393
May 2026
−99.6% errors
Internal microservices platform
02

Case studies

01
Cross-team crisis resolution — partner payments bug
Investigated, diagnosed, and resolved a business-critical bug blocking 900+ global partners from adding PayPal payout methods — an issue that had persisted since 2022. Challenged the initial root-cause hypothesis to land on the real fix and ship a secure solution.
02
Cotopaxi Design System Upgrade
Tech-led the revival of a project stalled for over a year, driving cross-functional alignment between Design and Engineering — landing adoption across 4+ teams and 2 consumer-facing applications.
03
HS2 Rail Infrastructure — Sustainability & Design
Exceeded client energy and carbon targets by 5% on the £60bn High Speed 2 rail station infrastructure project, translating complex requirements into scalable, sustainable solutions. Shortlisted finalist for the IEMA award — 55% carbon reduction, 16% cost savings.
04
Automated Budget Tracking — £6bn Bogotá Metro Line 1
Built a Python-based tracking system to monitor budget, time, finance, and resources for the Bogotá Metro Line 1 — Colombia's first metro line, a £6bn international project — increasing profit margins by 11% over 9 months, as Assistant Project Manager.
03

On stage & in print

Elizabeth contributing to a discussion at the She Bytes Back x Synthesia event
She Bytes Back × Synthesia
Contributed to discussions on AI development workflows and the risks of introducing AI tooling to junior engineers too early — among 80+ senior engineers from Google, Spotify, Microsoft, and Cloudflare
Audience Discussion · 2026
Elizabeth speaking at the Women in Tech Oxfordshire event
Women in Tech Oxfordshire
Represented sponsors at this Humand Talent event hosted by Viator — used the introduction to share my own career-switcher journey into tech, alongside speakers covering career transitions and first-time engineering leadership
Speaking · 2025
Elizabeth presenting at the IMechE Future of Rail competition
IMechE "Future of Rail" Regional Presentation Competition
Applied to build my speaking repertoire — presented to directors and senior leaders across the mechanical engineering industry and IMechE on my role on HS2, placing runner-up (2nd) as the only female engineer in the final four
Competition · 2019
AI Personalisation Panel — with Colorintech
Co-organising cross-organisational sessions on agentic AI, bias, and engineering trust
Coming soon · Aug/Sept 2026
Codecademy Learner Story
Selected by Codecademy for a Learner Story feature after they reached out following my content — publishing soon
Coming soon
04

Leadership & mentoring

Since June 2024, I've led the WomenCoders Leadership Team at a global travel-tech company — a global initiative supporting women in engineering across the US and UK — and driven improvements to the company's interview process for candidates from non-traditional backgrounds.

I'm also an advocate for AI adoption within my team — running 3 AI learning sessions in 2 months across a team of 12, promoting agentic workflows and tooling to make engineering work more efficient, and sharing that knowledge across teams.

Mentorship runs through both halves of my career: as a STEM Ambassador and Mentor with the Association for BAME Engineers since 2018, I run CV and interview-prep sessions that have reached tens of students. In tech, three to four people I've mentored have switched into cybersecurity and software engineering roles, and three engineers I've guided have passed mechanical engineering chartership on their first attempt. I also create content on breaking into tech, reaching 350+ people with that advice.

I'm also an active member of CodeFirstGirls (since 2022) and GTA Black Women in Tech (since 2026).

05

Awards & nominations

Diversity Inclusion Tech Awards 2026 Finalist
STEM Advocate Award
Diversity Inclusion Tech Awards
Finalist · 2026
Diversity Inclusion Tech Awards 2026 Finalist
Rising Star Award
Diversity Inclusion Tech Awards
Finalist · 2026
06

Credentials

Engineering
Master of Engineering (MEng Hons) in Mechanical Engineering — Loughborough University, 2017
Chartered Engineer (CEng) — Institution of Mechanical Engineers (MIMechE), 2022
Software Engineering
AWS Cloud Practitioner Essentials — 2022
Complete Python Developer — Zero To Mastery, 2020–2021
The Complete Web Development Bootcamp — The App Brewery, 2022
07

Let's talk

Happy to hear from event organisers about speaking opportunities, from award panels, or from anyone considering the same career leap.

Open to speaking on
Career switching into tech
AI tooling in engineering practice
Women in STEM / engineering
Moving up the ladder quickly in engineering
Building visibility for your work