Senior Software Engineer
Senior Software Engineer

Senior Software Engineer

Portsmouth Full-Time 42000 - 58000 £ / year (est.) No home office possible
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At a Glance

  • Tasks: Design and build complex front-end features using modern JavaScript frameworks.
  • Company: Join an innovative SaaS company shaping a serverless platform on AWS and Azure.
  • Benefits: Enjoy fully remote work, competitive salary, 25 days holiday, and private medical healthcare.
  • Why this job: Make a real impact in a fast-paced environment that values innovation and collaboration.
  • Qualifications: Expert-level JavaScript/TypeScript experience with strong knowledge of React, HTML5, and CSS3.
  • Other info: Opportunity to influence design decisions and mentor fellow developers.

The predicted salary is between 42000 - 58000 £ per year.

Our client, an innovative SaaS company, is looking for a Senior Software Engineer to join their remote team. This is an exciting opportunity to help shape a fully serverless platform built on AWS and Azure, using cutting-edge technologies such as React, TypeScript, and Node.js. You’ll play a key role in developing intuitive, responsive, and visually compelling features that enhance the user experience. You will also have the chance to influence design and architecture decisions while driving technical excellence across the engineering team.

What’s on Offer

  • Fully remote UK based contract
  • £60,000 - £70,000 starting base salary
  • 25 days’ holiday plus 8 public holidays, with an optional two weeks’ unpaid leave based on working full time
  • Company pension scheme with 7% employer contribution and 2% employee contribution, with additional contributions matched by the employer up to a further 3%
  • Private medical healthcare and life insurance 4x your salary
  • Eligibility for a discretionary bonus (9%)
  • Participation in the company’s share options scheme

What You’ll Be Doing

  • Designing and building complex front-end features using modern JavaScript frameworks
  • Collaborating with UX/UI designers and stakeholders to deliver seamless user experiences
  • Ensuring performance, accessibility, and cross-browser compatibility
  • Influencing architecture and contributing to product design discussions
  • Promoting best practices through code reviews and mentorship
  • Staying up to date with emerging technologies and tools

What We’re Looking For

  • Expert-level JavaScript/TypeScript with deep experience in React, Vue, or Angular
  • Strong grasp of HTML5, CSS3, browser APIs, and responsive design principles
  • Proven experience in integrating front-end applications with RESTful APIs
  • Understanding of web security and accessibility best practices
  • Excellent communication skills and ability to collaborate cross-functionally
  • A proactive mindset and a passion for building quality software

Essential Experience

  • Significant background in SaaS product development
  • Track record of delivering high-quality, user-focused features
  • Version control (Git) and collaborative workflows
  • Performance optimisation and responsive design implementation

Bonus Points For

  • Full-stack capabilities with Node.js or similar
  • Familiarity with AWS or Azure services
  • Experience with NoSQL/graph databases
  • Knowledge of state management, testing practices, and scalability
  • Open-source contributions or reusable component library development
  • Experience mentoring developers and supporting team growth

Ready to make a real impact in a fast-moving, product-focused environment? Apply now to join a team that values innovation, collaboration, and technical excellence!

Senior Software Engineer employer: 83zero

Join an innovative SaaS company that champions a fully remote work culture, offering you the flexibility to thrive from anywhere in the UK. With competitive salaries, generous holiday allowances, and a robust benefits package including private healthcare and a strong pension scheme, we prioritise your well-being and professional growth. Here, you'll have the opportunity to work with cutting-edge technologies while collaborating with a passionate team that values creativity and technical excellence, making it an ideal environment for those looking to make a meaningful impact.
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Contact Detail:

83zero Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Senior Software Engineer

✨Tip Number 1

Familiarise yourself with the latest trends in JavaScript frameworks, especially React, TypeScript, and Node.js. Being able to discuss recent advancements or features in these technologies during your interview can demonstrate your passion and expertise.

✨Tip Number 2

Showcase your experience with SaaS product development by preparing specific examples of projects you've worked on. Highlight how you contributed to user-focused features and any challenges you overcame, as this will resonate well with the hiring team.

✨Tip Number 3

Brush up on your knowledge of web security and accessibility best practices. Be ready to discuss how you've implemented these principles in past projects, as this is crucial for the role and will set you apart from other candidates.

✨Tip Number 4

Prepare to talk about your collaborative experiences, especially in cross-functional teams. Sharing examples of how you've worked with UX/UI designers or other stakeholders will highlight your communication skills and ability to drive technical excellence.

We think you need these skills to ace Senior Software Engineer

Expert-level JavaScript
TypeScript proficiency
Deep experience in React, Vue, or Angular
Strong grasp of HTML5 and CSS3
Understanding of browser APIs
Responsive design principles
Experience integrating front-end applications with RESTful APIs
Knowledge of web security best practices
Accessibility best practices
Excellent communication skills
Collaborative mindset
Proactive approach to software development
Version control (Git) expertise
Performance optimisation techniques
Experience in SaaS product development
Full-stack capabilities with Node.js
Familiarity with AWS or Azure services
Experience with NoSQL/graph databases
Knowledge of state management and testing practices
Experience mentoring developers

Some tips for your application 🫡

Tailor Your CV: Make sure your CV highlights your experience with JavaScript, TypeScript, and frameworks like React. Include specific projects where you've built complex front-end features and mention any SaaS product development experience.

Craft a Compelling Cover Letter: In your cover letter, express your passion for building quality software and your proactive mindset. Mention how your skills align with the company's needs, particularly in influencing design and architecture decisions.

Showcase Relevant Projects: If you have a portfolio or GitHub repository, include links to projects that demonstrate your expertise in modern JavaScript frameworks and your ability to deliver user-focused features. Highlight any contributions to open-source projects if applicable.

Prepare for Technical Questions: Anticipate technical questions related to web security, performance optimisation, and responsive design principles. Be ready to discuss your experience with integrating front-end applications with RESTful APIs and your understanding of best practices in accessibility.

How to prepare for a job interview at 83zero

✨Showcase Your Technical Skills

Be prepared to discuss your expertise in JavaScript, TypeScript, and frameworks like React. Bring examples of past projects where you’ve built complex front-end features, and be ready to explain your thought process and the technologies you used.

✨Demonstrate Collaboration Experience

Since the role involves working closely with UX/UI designers and stakeholders, share specific instances where you collaborated effectively. Highlight how you contributed to delivering seamless user experiences and how you handled feedback.

✨Discuss Architecture and Design Influence

Prepare to talk about your experience influencing architecture and design decisions. Discuss any relevant projects where you played a key role in shaping the product's technical direction and how you ensured best practices were followed.

✨Emphasise Continuous Learning

The tech landscape is always evolving, so show your passion for staying updated with emerging technologies. Mention any recent tools or frameworks you've explored and how they could benefit the company’s projects.

Senior Software Engineer
83zero
8
  • Senior Software Engineer

    Portsmouth
    Full-Time
    42000 - 58000 £ / year (est.)

    Application deadline: 2027-06-08

  • 8

    83zero

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