Senior Full-Stack Engineer: Drive Web Product Impact

Praktika.ai; Greater London; On-site; GBP 90,000 - 120,000; Full time

Job summary

Praktika.ai seeks a Senior Full-Stack Engineer to own every web-facing surface — onboarding flows, landing pages, customer portals, web app and internal tools. This full-cycle role lets you shape product direction, run experiments, ship features end-to-end, and measure impact on conversion, retention, and learner experience.

You’ll collaborate with Product, Marketing, and Growth, influencing product decisions and driving architecture.

Qualifications

• Senior-level full-stack engineer responsible for web surfaces across marketing site, onboarding, portals, web app and internal tools.
• Proficiency with modern full-stack tooling (TypeScript, React, Next.js) and strong UI/UX sensibilities.
• Data-driven with experience in analytics, experimentation, and conversion-focused product decisions.

Responsibilities

• Own the entire web stack: marketing site, onboarding funnels, customer portals, web app, and internal tools.
• Lead architecture, development, experimentation, and operations across all web applications.
• Drive product decisions: design and run A/B tests, analyze results, and iterate based on data.
• Build adaptive, animated, mobile-first experiences that convert and delight users.

Skills

Full-stack

TypeScript

React

Next.js

RESTful APIs

A/B testing

Analytics

UI/UX

Mobile-first

Tools

Next.js

CSS-in-JS

Tailwind

LaunchDarkly

Flagsmith

Amplitude

PostHog

Firebase

Auth0

Stripe

PayPal

RevenueCat

Job description

Praktika.ai seeks a Senior Full-Stack Engineer to own every web-facing surface — onboarding flows, landing pages, customer portals, web app and internal tools. This full-cycle role lets you shape product direction, run experiments, ship features end-to-end, and measure impact on conversion, retention, and learner experience.

You’ll collaborate with Product, Marketing, and Growth, influencing product decisions and driving architecture.