Senior Full-Stack Engineer (Multiple Openings)

Wordwall; Greater London; Remote; GBP 90,000 - 130,000; Full time

Benefits offered by this job

30 days holiday per year

100% remote working

Social events and annual meet ups

Job summary

Wordwall is hiring three Senior Full-Stack Engineers to join our remote Engineering team. You will work across C#/.NET and modern TypeScript/React, with opportunities to contribute to cross-functional pillars and UI modernization.

The roles require 5+ years of software development experience, strong backend or frontend focus, and a remote-ready setup. Emphasis on collaboration with PMs, Designers, and Marketing, with a culture of mentoring and high-quality code.

Qualifications

• Minimum 5 years of progressive software development experience.
• Strong proficiency in C#/.NET or React/TypeScript with full-stack capability.
• Relational databases experience (SQL Server/Azure SQL preferred).
• Experience with Agile/SDLC, code reviews, mentoring, and best practices.
• Bachelor's or Master's in CS/Engineering or equivalent.
• Remote workstation setup is required.

Responsibilities

• Deliver high-quality features across full-stack or front-end/back-end focus areas.
• Migrate to .NET 8, optimize Azure SQL, and modernize UI components.
• Identify and raise technical debt; draft technical proposals.
• Provide code reviews, mentor engineers, and promote standards.
• Collaborate with PMs, Designers, and Marketing; evaluate AI tooling for delivery.

Skills

C#/.NET

React/TypeScript

Full-stack

Web accessibility

Agile/SDLC

Education

Bachelor's or Master's in CS/Engineering

Tools

Azure SQL

SQL Server

Entity Framework Core

Azure DevOps

OpenTelemetry

Jest/React Testing Library/Playwright

Job description

• First stage interview w/ Engineering Manager & Pillar Lead: 19th - 30th October
• Panel Interview & Technical Assessment: 2nd - 5th November (potential extension to 12th Nov)

Location: Remote

Reports to: Engineering Manager

Department: Engineering

Interview process

• Application deadline: 11th October 2026
• Initial HR intro call: 14th October 2026
• First stage interview w/ Engineering Manager & Pillar Lead: 19th - 30th October
• Panel Interview & Technical Assessment: 2nd - 5th November (potential extension to 12th Nov)

THE ROLES

We are hiring three Senior Full-Stack Engineers to join our cross-functional team pillars (which include Commercial Optimization, Product Innovation, and Tech Scale). Please note that specific pillar placement is not guaranteed and may vary from time to time based on business needs.

We are advertising broadly for full-stack developers, but are actively seeking candidates with distinct front-end or back-end specialisms to fulfil three specific profiles:

• Balanced Full-Stack Developer. Comfortable splitting impact 50/50 across C#/.NET and modern TypeScript / React
• Back-end focused Senior Developer. Deep C#/.NET and Azure SQL expertise with front-end awareness
• Front-end focused Senior Developer. Strong Modern React/TypeScript specialization to lead UI architecture and frontend modernization while collaborating with backend systems. Migrating legacy patterns through TypeScript into component-driven React

During the application review, we will evaluate your individual background against all three specialist tracks to find the best fit for your technical strengths

Key Responsibilities

• Technical depth and delivery. Deliver high-quality features across the full stack (or front-end/back-end focus areas). Make independent technical decisions, consider architectural knock-on effects, and write clean, thoroughly tested code
• Migration and modernization. Help steer key initiatives—whether migrating C# services to .NET 8, optimizing Azure SQL performance, or converting legacy UI modules into scalable React components
• Technical debt and architecture. Identify and raise technical debt, author technical proposals on complex tickets, and champion quality standards
• PR reviews and mentorship. Provide constructive code reviews, pair with mid-level engineers, unblock colleagues proactively, and guide standard methodologies
• Collaboration and strategic AI. Work closely with PMs, Designers, and Marketing to shape what gets built, not just how. Strategically utilize and critically evaluate AI tools to accelerate delivery without compromising quality

Requirements

REQUIRED

• Minimum 5 years of progressive, professional software development experience
• Technical core:
• Strong proficiency in C# and the .NET ecosystem, OR
• Strong proficiency in React, TypeScript, HTML, and CSS (with web accessibility/WCAG experience for FE-focused candidates), OR
• Broad comfort working across the full stack and adapting to where team focus is required
• Data and cloud. Experience with relational databases (SQL Server / Azure SQL preferred)
• Engineering standards. Proven experience conducting thorough PR reviews, mentoring mid-level engineers, and working within Agile/SDLC frameworks
• Education. Bachelor's or Master's degree in Computer Science, Engineering, or equivalent practical experience
• Remote setup. Candidates must have an existing and suitable remote workstation setup

NICE-TO-HAVES

• Experience with React component library design systems or component-driven migration
• Hands-on experience with Azure Ecosystem (App Services, Azure SQL, Azure DevOps)
• Experience with Entity Framework Core or backend performance optimization
• Familiarity with OpenTelemetry, front-end performance monitoring, or testing frameworks (Jest, React Testing Library, Playwright)
• Prior experience in the EdTech sector

Benefits

• 30 days' holiday per year (inclusive of UK bank holidays)
• 100% remote working
• Social events and annual meet ups

About Wordwall

Wordwall empowers educators to create interactive, customisable teaching materials in minutes - turning static lessons into dynamic, student-centred learning experiences. With just a few simple inputs, teachers can generate a variety of gamified activities, from quizzes and flashcards to arcade-style challenges, making learning more engaging and effective.

We're flipping the script on traditional educational publishing by putting powerful creation tools directly into teachers' hands. Our platform fuels a bottom-up content ecosystem - scalable, shareable, and deeply attuned to real classroom needs - powered by a global community of educators. With millions of active users, strong organic traction, and a product that's beloved by teachers worldwide, Wordwall is entering an exciting new chapter.

We're focused on building upon an already great product and increasing our impact and reach in key markets like the U.S. and Europe, deepening engagement with our paid user base, and driving innovation through emerging technologies such as AI. We're a lean, mission-driven, remote team building for long-term impact - and we're looking for sharp, strategic technical thinkers to help us scale both our product and our purpose.