Senior Software Engineer, JS

Senior Software Engineer, JS

Full-Time 60000 - 75000 £ / year (est.) No working from home possible
Sage

At a Glance

  • Tasks: Design and develop scalable Salesforce product features while mentoring fellow engineers.
  • Company: Join a supportive tech team at Sage, known for innovation and collaboration.
  • Benefits: Enjoy competitive salary, generous leave, hybrid work, and ongoing training.
  • Other info: Be part of a close-knit team with excellent career growth opportunities.
  • Why this job: Make a real impact in a friendly environment with cutting-edge technology.
  • Qualifications: Strong Salesforce development experience and knowledge of Apex, SOQL, and JavaScript.

The predicted salary is between 60000 - 75000 £ per year.

hackajob is collaborating with Sage to connect them with exceptional professionals for this role.

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

  • 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

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.

Sage

Contact Details:

Sage Recruitment Team

We think you need these skills to ace Senior Software Engineer, JS

Salesforce Development
Apex
SOQL
JavaScript
Salesforce Lightning
Lightning Web Components
VisualForce