Sebastian Evison-Theodossiades - Full-Stack Developer

Full-stack developer focused on web applications and infrastructure. Starting work at NatWest Group in September 2026. Graduated from the University of Leicester with a First-class honours degree (79.48% overall) in Computer Science. Previously worked as a SWE at the Office for National Statistics.

Work Experience

Engineering Graduate Trainee - London

NatWest Group

Starting Sept. 2026

Incoming graduate Software Engineer at NatWest Group.

Software Engineer

Office for National Statistics (ONS)

Sept. 2024 - May 2026

Developed scalable React/Python apps on AWS (ECS Fargate, S3, Cognito) with Terraform; owned CI/CD and automated tests. Took PoC from concept to production plus key supporting services. Accepted part-time extension to continue during dissertation collaboration.

Founder

Lattara.org

June 2025 - Nov. 2025

Built custom Selenium scraping service delivering structured data to clients via scheduled jobs. Maintained monthly subscription model, with payment via cryptocurrency on a self-made dashboard.

Projects

Survey Kit

Open-source React survey framework: mobile-first flow, WCAG 2.2 AA, JSON config, TypeScript, form/chat rendering modes, validation, progress and localStorage persistence. Created for my university final year project, received 80.58% overall.

ONS Tech Stack Visualiser

Led MVP development to map ONS repositories, project and dependencies. ECS-hosted app (React/Node.js) deployed with Terraform IaC; used by 100+ staff for project discovery and technology assessment.

Lattara.org

High-scale Twitter & YouTube scraping platform. Requires signup, paid via crypto. Outputs clean JSON for developers, analysts and prediction markets.

MultiConnect

SaaS platform for solo creators to generate, schedule, and publish TikTok carousels and YouTube Shorts from one dashboard. AI content generation, automated rendering, Stripe subscriptions. Next.js, SQLite, OpenRouter, Python.

ScanSave.In

1st place winner of the IBM x LeicesterCS Hackathon 2025. AI-powered app to track diet and spending by scanning barcodes. Next.js, Supabase, GeminiAI.

LinkedIn Games Solver

An automated system that solves LinkedIn's daily games every morning at 8am. The frontend is built with Vite and deployed on Vercel, while the backend uses Python with Flask RESTX. A Selenium-wire bot, running on a Hetzner VPS, scrapes the answers and updates the solutions each day.

Olbia Pro

A real-time NFT mint monitor surfacing trending collections and runner alerts. Features a Next.js dashboard, Node.js backend, and paid Discord webhook alerts via on-chain payments.

Bumpy.Pro

Depop bot automation tool to increase sales. Chrome extension (HTML and JS) and a web app (Next.js and MongoDB).

Voting Platform

Paid work creating a custom hub for NFT holders to participate in project decisions. Next.js, PostgreSQL.

PlanBot

Participated in the Government Digital Service's x i.AI hackathon in Leeds. Within 24hrs we built a chatbot with ShadCN and Gemini to aid planning consultations and clients.

Analytics Dashboard

Proof of concept for a project management platform with magic link authentication. Next.js, PostgreSQL.

Zero CMS

Content management system (PoC) for Zero Bank. Create, edit, delete FAQs and articles for customers to view. MongoDB, Express, React, Node.js.

IBM SkillsBuild Gamification

University coursework, group project using Scrum methodology. Created an application on top of the IBM SkillsBuild site with gamification elements as well as login, signup and profile sections.

Top Food Markets in London

A food market recommendation platform using the MERN stack. Users can sign up and rate food markets in London with intuitive UI and fast API.

CampusTalk

A university news platform using the MERN stack. Users can sign up, post news, and interact by liking or disliking posts with OTP verification.

SwapStuff

Exchange items among students using an in-app points system. React application developed within 4 days for a Hackathon, achieved top 5 ranking.

Education

University of Leicester

BSc Computer Science

Sept. 2022 - June 2026

Graduated with a First-class honours degree (79.48% overall). Completed a one-year placement at the ONS in Year 3; part-time employment at the ONS continued in Year 4 whilst collaborating on my final year project (achieved 80.58% overall).