Red Badger Logo

Red Badger

Senior Fullstack Software Engineer

Posted Yesterday
Be an Early Applicant
In-Office
London, Greater London, England, GBR
Senior level
In-Office
London, Greater London, England, GBR
Senior level
Build and operate client-facing web applications with a front-end focus using React and Next.js, alongside Node.js services, REST APIs, integrations, data systems, and .NET services. Collaborate with designers, shape product and technical solutions, maintain component libraries, implement secure authentication, and contribute to architecture, testing, code reviews, CI/CD, and production releases in an agile Kanban environment.
The summary above was generated by AI

The best bit about Red Badger is, of course, the team. We’ve been around for 12+ years now and we are over 120 strong. We are really proud of our people; we support and learn a lot from each other; we work really hard but have fun doing it. We are a diverse group made up of 22 different nationalities, speaking 17 different languages.


The Role


We are looking for a senior, hands-on software engineer with a slight front-end lean. The role combines polished React interface development with the API, integration, data and back-end work required to bring services across the business into one client-facing platform. We want someone who understands the product problem, contributes ideas and helps shape the technical solution, rather than only coding against a finished specification.

  • Build production features using React and Next.js, working directly with designers in Figma and maintaining reusable components through Storybook.
  • Develop Node.js services and REST APIs; work with C#/.NET services, Microsoft SQL, Azure SQL and high-volume transactional data.
  • Integrate internal and external services through APIs, webhooks and SFTP, including platforms comparable to Stripe and Royal Mail.
  • Implement secure identity and access management using Auth0 or comparable authentication and authorisation platforms.
  • Contribute to architecture, code review, secure engineering, testing, CI/CD and releases through Azure DevOps.

How we work
We work in an agile, product-led Kanban environment managed through Jira. Product owns and prioritises user stories, with delivery broken into engineering subtasks. Engineers pick up and complete these tasks while contributing earlier through discovery, idea mapping, requirements scoping, feasibility assessment and scope definition.
Technical environment
React; Next.js; Node.js; Storybook; Figma; REST APIs and webhooks; Auth0; C#/.NET; Microsoft SQL and Azure SQL; Azure; Azure DevOps; Jira; data-lake and warehouse tooling; SFTP; HL7; and SOAP. Synapse is API-first and supports both its user interface and third-party integrations.
Candidate requirements and agency shortlisting steer
Prioritise engineers from established digital product teams who have built and operated high-value client-facing web applications, consumer services or enterprise-grade SaaS products at scale. We are particularly interested in people from highly regulated but rapidly transforming organisations who have modernised client services while integrating with complex legacy technology in large, established blue-chip environments.

  • Strong commercial React, Next.js and Node.js experience, with clear evidence of polished, client-facing UI delivery.
  • Hands-on collaboration with designers in Figma and experience building reusable component libraries in Storybook.
  • REST API development and third-party integrations across payment, logistics, delivery or comparable external services.
  • C#/.NET, Azure, Azure DevOps, Microsoft SQL or Azure SQL, secure development and ownership of live production applications.
  • Auth0 or comparable authentication and authorisation experience in production web applications.
  • High-velocity agile delivery: responding to epics and backlog priorities, completing engineering subtasks and picking up tickets through Jira.
  • Valuable experience includes API-first or headless platforms, high-volume data, webhooks, SFTP, SOAP, HL7, data lakes or warehouses, CI/CD and partner-facing API documentation.


Diversity & Inclusion:
 

Red Badger is committed to creating a diverse and inclusive environment, and is proud to be an equal opportunity employer. We hire, employ, train, promote and compensate regardless of gender, gender identity, race, disability, sexual orientation, age, creed and colour. We are fully focused on equality, and it is our fundamental belief that the fascinating characteristics that make us all different enable us to continue to do amazing work for our clients.
 
 
 
HQ

Red Badger London, England Office

2 Old Street, St Luke's, London, United Kingdom, EC1Y 8AF

Similar Jobs

21 Days Ago
Hybrid
London, Greater London, England, GBR
Senior level
Senior level
Fintech • Mobile • Payments • Software • Financial Services
Build and operate scalable full-stack systems that prevent fraud, account takeovers, scams, and financial crime. Own projects end to end, develop customer-facing security controls, improve transaction monitoring and detection capabilities, and collaborate with Product, Design, Data Science, and Investigations. The role requires Java or JVM expertise, Spring, modern frontend development, distributed systems, databases, CI/CD, testing, strong product judgment, and mentoring junior engineers.
Top Skills: Ci/CdConcurrent SystemsData PipelinesDistributed SystemsFeature EngineeringJavaJavaScriptJvmMachine LearningNon-Relational DatabasesReactRelational DatabasesSpringTest Driven DevelopmentTypescript
4 Days Ago
In-Office
London, Greater London, England, GBR
Senior level
Senior level
Robotics • Software • Automation
Lead technical direction and hands-on development for full-stack products across C#/.NET, Node/TypeScript, React, and PostgreSQL. Own architecture, delivery planning, code quality, backend design, and feature delivery while collaborating with Product, Design, and QA. Mentor engineers, facilitate Agile ceremonies, review code, document processes, and promote AI-assisted development and engineering best practices.
Top Skills: AWSAzureC#/.NetCi/CdClaudeCursorDockerGCPGitInfrastructure As CodeKafkaKubernetesNext.JsNode.jsOrmPostgresRabbitMQReactSignalrTrpcTypescriptWebsockets
14 Days Ago
In-Office
London, Greater London, England, GBR
Senior level
Senior level
Information Technology • Software
Build and prototype full-stack web, CMS, marketing platform, API, and cloud infrastructure solutions. Support technical exploration across CMS modernization, AI, agentic systems, and workflow automation. Develop proof of concepts, investigate scalable platform capabilities, and collaborate with principal engineers, technical leaders, engineers, and stakeholders to shape pragmatic architecture and roadmap decisions. The role uses modern JavaScript technologies, cloud services, APIs, and infrastructure-as-code.
Top Skills: AIAmazon CloudfrontAmazon S3AmplitudeAstroAWSCmsGraphQLJavaScriptNext.JsNode.jsReactRestSanity StudioSanity.IoTerraformTypescript

What you need to know about the London Tech Scene

London isn't just a hub for established businesses; it's also a nursery for innovation. Boasting one of the most recognized fintech ecosystems in Europe, attracting billions in investments each year, London's success has made it a go-to destination for startups looking to make their mark. Top U.K. companies like Hoptin, Moneybox and Marshmallow have already made the city their base — yet fintech is just the beginning. From healthtech to renewable energy to cybersecurity and beyond, the city's startups are breaking new ground across a range of industries.

Sign up now Access later

Create Free Account

Please log in or sign up to report this job.

Create Free Account