Senior Salesforce Software Engineer

We're hiring | Senior Salesforce Developer - Product Engineering Team (ISV) in Winnersh (Reading area), UK | Hybrid (3 days onsite)

Sage People is a global HR & people management SaaS product built on the Salesforce (

Force.com

) platform, serving customers worldwide. As an ISV, we build and evolve one single product, with a strong focus on code quality, scalability, performance and long-term architecture.

We're looking for a senior hands-on Salesforce engineer who can go beyond feature delivery: someone able to understand business complexity, shape technical design, contribute to architecture decisions, and help build scalable, maintainable solutions within a mature Salesforce product environment.

Team culture & environment

What really makes this role stand out is the team.

- A stable, close knit engineering group - many team members have worked together for 8+ years

- A friendly, supportive and human environment, where people genuinely enjoy working together

- Engineers, testers, architects and product managers collaborating daily as one product team

- A culture that values shared ownership, learning and constructive technical discussions

- Strong leadership momentum and investment, particularly around AI and Salesforce innovation

- A modern, welcoming office in Winnersh, with teams enjoying face to face collaboration as part of a hybrid model

What you'll be doing

As a Senior Salesforce Developer, you will take ownership of complex technical delivery while contributing to the design and architecture of our Salesforce-based product. You will work hands-on with Apex, SOQL, JavaScript, Salesforce Lightning, Lightning Web Components, VisualForce and APIs, while helping define robust technical approaches for scalable product features.

- Design, develop and maintain enterprise-grade Salesforce product features with a strong focus on scalability, maintainability and performance

- Translate complex business requirements into clear technical designs and robust implementation plans

- Contribute actively to Salesforce architecture discussions, design reviews and long-term product decisions

- Apply strong object-oriented design principles, automated testing practices, code quality standards and CI/CD ways of working

- Mentor and support other engineers through code reviews, technical guidance and knowledge sharing

This is a senior hands-on development role with genuine technical depth. It is not an admin or configuration-focused position: we are looking for someone who enjoys building, designing and improving complex Salesforce product capabilities.

What we're looking for

Core skills

- Strong hands-on Salesforce development experience, ideally within a product, SaaS or ISV environment

- Advanced knowledge of Apex, SOQL, JavaScript, Salesforce Lightning and Lightning Web Components

- Good understanding, and ideally practical experience, of Salesforce solution design and architecture

- Ability to design scalable, secure and maintainable solutions while considering Salesforce platform limits, data model, integrations and performance

- Solid object-oriented programming background, for example in Java or C#, with strong software engineering fundamentals

Nice to have

- Experience contributing to architecture reviews, technical roadmaps or design governance

- Exposure to Salesforce REST APIs, integrations and enterprise application architecture

- Experience with Git, Jira, IntelliJ, CI/CD pipelines and automated testing strategies

- Salesforce Platform Developer certification, or architecture-related Salesforce certifications

- Interest in AI-driven product capabilities and how they can be embedded into Salesforce-based solutions

Benefits - we have plenty

- Competitive salary plus generous bonus scheme

- Pension plan: up to 8% matched + 2% top-up by Sage

- 25 days annual leave, with the option to buy up to 5 more

- 8 bank holidays

- 5 paid volunteer days per year via the Sage Foundation

- 50% income protection

- Holiday buy & sell

- Comprehensive health, dental and vision coverage

- Work Away scheme (up to 10 weeks per year)

- Ongoing training and professional development

- Hybrid working

- Healthy Mind app membership

- Access to financial, health and wellbeing memberships

Discover life at Sage:

If you're looking for a Salesforce developer role with real technical depth and a genuinely great team culture, we'd love to hear from you.