Senior Software Developer (Frontend)

We are seeking a skilled, motivated and proactive senior React developer to join our dynamic team and take ownership of our front-end applications. It is essential that the candidate has a strong background working with the React library and associated frameworks, including programming in Typescript. You will be working in a highly corporate environment, following advanced security-first coding practices. This role involves developing, maintaining, and enhancing software solutions that support our business operations and client services, as well as playing an integral part in ensuring best practice is followed across the software development team., · Lead development of complex web applications using React.js and TypeScript.

· Utilise Docker for containerisation to ensure consistent environments across development, testing, and production.

· Write and maintain unit tests to ensure code quality and reliability.

· Participate in code reviews to provide and receive constructive feedback.

· Collaborate with cross-functional teams to define, design, and ship new features.

· Troubleshoot and resolve software defects and issues in a timely manner.

· Apply and advocate sound architecture (SOLID, DRY, KISS, Clean Architecture).

· Improve developer workflows (linting, formatting, CI jobs, test coverage).

· Optimise components for performance and accessibility (WCAG compliance).

· Mentor and guide junior developers, fostering a culture of continuous learning and improvement.

· Stay up to date with emerging technologies and industry trends to continuously improve skills and knowledge.

· Proactivity is an essential skill to be successful in our environment.

· Excellent problem-solving skills and attention to detail.

· Excellent communication skills, able to explain complex technical concepts to non-technical stakeholders.

· Strong teamwork ability, while able to manage own workload independently.

Key Skills & Experience

· Solid expert experience in front-end development using React, including Next.js or similar.

· Strong TypeScript fundamentals and experience building clean, type-safe components with strong attention to UX, reusability, and documentation.

· Strong knowledge of version control and collaboration using GitHub, Bitbucket, Azure Repos etc, including maintaining 3rd party library hosting.

· High unit & integration tests coverage using automated testing tools & frameworks such as Jest, Cypress etc.

· Experience in writing and updating code documentation using tools such as Confluence.

· Working knowledge of the Azure/AWS/GCP cloud services platform and app distribution.

· Experience with modern build pipelines and deployment strategies using CI/CD tools like Azure pipelines and GitHub Actions.

· Infrastructure as Code with Terraform, Bicep etc.

· Security practices and tools like OWASP etc.

· Background in working in a corporate environment with a strong focus on first-class security implementation in Agile/Scrum teams.

Desirable Skills & Experience

· Familiarity with NodeJS backend coding and NPM package creation and maintenance.

· SQL-based database coding & management with MySQL, PostgreSQL, MS SQL Server etc.

· Observability/monitoring: Sentry, Datadog, New Relic.

· Familiarity with Jira or similar for project management and issue tracking.

· Understanding of SonarQube, Snyk or similar for code quality analysis.

· Monitoring and logging tools like ELK Stack, Prometheus, or Grafana.

· Willingness to learn other languages and skills as used by the wider team, e.g. C#, pensions calculations modelling etc.

· Familiarity with NodeJS backend coding and NPM package creation and maintenance.

· SQL-based database coding & management with MySQL, PostgreSQL, MS SQL Server etc.

· Observability/monitoring: Sentry, Datadog, New Relic.

· Familiarity with Jira or similar for project management and issue tracking.

· Understanding of SonarQube, Snyk or similar for code quality analysis.

· Monitoring and logging tools like ELK Stack, Prometheus, or Grafana.

· Willingness to learn other languages and skills as used by the wider team, e.g. C#, pensions calculations modelling etc., · Bachelor's degree in Computer Science, Software Engineering, or a related field, or equivalent work experience.

· Extensive professional software development experience, some of which in a corporate environment with a strong focus on security best practice & ISO27001 certification.

Demonstrated Commitment to our Core Purpose * Power in Partnership: We work in partnership with our clients & each other - building open and trusted relationships. Working together allows us to deliver the best for our clients. * Future Focus: We want to push our industry forward by solving problems in better ways that benefit both our clients & society. * Strength in Difference: We work with diverse perspectives to find better solutions. Working with differences makes us stronger. * People First: We recognise that pensions is a people business. People are the source of Isio's expertise and it is people's lives that we affect through our advice. What we offer you Isio is a people business, and we're committed to helping our great colleagues gain a wide variety of experience, significant development opportunities and progression through the business. The variety of work that'll be available to you will enable you to do this. You can find out more about Isio and the benefits we offer here Isio - Careers & Benefits. About Isio Isio was 'born' in 2020 from the sale of KPMG UK's Pension Practice to a private equity firm. An industry-leading challenger, we provide diverse expertise spanning Pensions, Investment, Benefits and Wealth to give clients an integrated experience. Isio is built by challengers, innovators and forward-thinkers, grounded around a vision which strives to deliver greater financial confidence for everyone. We empower and develop those who join us - valuing curious minds and giving people the freedom to outperform. Known and respected for our agility, we harness specialist experience, bold thinking and the desire to push the boundaries of what we can achieve for our clients, from small to blue chip, public to private. At Isio, we are committed to fostering an inclusive, equitable and diverse workplace, in which our colleagues feel they belong, regardless of background or difference. We uphold the values of respect, fairness, and inclusion in our actions and decisions. We believe that by adhering to these principles, we will create a stronger, more innovative, and supportive environment for all, as well as ensuring that the advice and support we provide to our clients is more creative, more insightful and leaves a lasting impact. We have offices across the UK and many of our roles offer a hybrid, flexible approach to work to help create a work-life balance that works for you. Isio Group is an equal opportunities employer and we welcome applications from all suitably qualified candidates.