Senior Full-Stack Engineer, Multiple Openings

Wordwall

. Deliver high-quality features across the full stack or focused front-end/back-end areas .

Posted 9/23/2026full-timeRemote • United KingdomSeniorWebsite

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates strong proficiency in C# and the .NET ecosystem or React, TypeScript, HTML, and CSS, with a focus on delivering high-quality features and optimizing performance in a collaborative environment. Capable of mentoring mid-level engineers and conducting thorough code reviews while adhering to Agile methodologies.

Highest-signal resume keywords

C# ProficiencyReact DevelopmentAgile MethodologiesSQL Server ExperienceWeb Accessibility (WCAG)

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

C#ReactTypeScriptHTMLCSSSQL ServerAzure SQL.NET 8Code ReviewTechnical Proposal Writing

Soft Skills

MentoringCollaborationProblem SolvingConstructive FeedbackProactive Unblocking

Tools & Technologies

AzureAI ToolsAgile FrameworksSDLC

Certifications & Qualifications

Bachelor’s Degree in Computer ScienceMaster’s Degree in Engineering

Industry Keywords

Full Stack DevelopmentTechnical DebtModernization InitiativesLegacy UI ConversionQuality Standards

Tech Stack

Tools & technologies

AzureReactSDLCSQLTypeScript.NET

About the role

Key responsibilities & impact

Deliver high-quality features across the full stack or focused front-end/back-end areas
Make independent technical decisions and consider architectural knock-on effects
Write clean, thoroughly tested code
Help steer migrations and modernization initiatives, including migrating C# services to .NET 8, optimizing Azure SQL performance, and converting legacy UI modules into scalable React components
Identify and raise technical debt
Author technical proposals on complex tickets
Champion quality standards
Conduct constructive code reviews
Pair with mid-level engineers
Proactively unblock colleagues and guide standard methodologies
Collaborate with PMs, Designers, and Marketing to shape what gets built
Strategically utilize and critically evaluate AI tools to accelerate delivery without compromising quality

Requirements

What you’ll need

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

Benefits

Comp & perks

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