Senior Software Engineer in City of London
Senior Software Engineer

Senior Software Engineer in City of London

City of London Full-Time 36000 - 60000 £ / year (est.) Home office (partial)
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At a Glance

  • Tasks: Lead the design and build of AI-driven applications and scalable data solutions.
  • Company: Fast-growing consultancy at the forefront of AI and data science.
  • Benefits: Competitive salary, 26 days holiday, private healthcare, and a £1,000 development budget.
  • Why this job: Join a dynamic team and make an impact across diverse industries with cutting-edge technology.
  • Qualifications: Expertise in Python (FastAPI), SQL, and experience with cloud platforms required.
  • Other info: Enjoy hybrid working, regular socials, and opportunities for professional growth.

The predicted salary is between 36000 - 60000 £ per year.

This fast-growing consultancy is pushing the boundaries of AI and data science, helping clients turn complex challenges into scalable, production-ready solutions. They’re now hiring a Senior Software Engineer who can blend deep technical expertise with a practical, delivery-focused mindset.

Role Overview:

  • Location: London (hybrid)
  • Package: Competitive salary + bonus + benefits
  • Industry: AI, Data Science & Technology Consulting
  • Security Clearance: Applicants Must have Active SC Clearance or above

What You’ll Be Doing:

  • Leading the end-to-end design and build of applications that utilise advanced AI and data-led software solutions.
  • Developing scalable data pipelines and backend services that support complex modelling work.
  • Setting standards for clean, efficient engineering across Python (FastAPI), SQL and cloud environments.
  • Training, tuning and deploying machine learning models into production.
  • Creating processes for robust data extraction, transformation and management.
  • Integrating new solutions with existing systems and ensuring smooth deployment.
  • Producing clear technical documentation and presenting findings to clients.
  • Staying current with emerging technologies and bringing fresh ideas into the team.
  • Contributing to proposals and shaping new project opportunities.
  • Mentoring junior engineers and driving best practice across the engineering team.

Main Skills Needed:

  • Strong track record delivering complex software projects end-to-end.
  • Deep expertise in Python Application Development (FastAPI), with a strong SQL capability.
  • Hands-on experience building data pipelines, APIs and backend services.
  • Solid understanding of cloud platforms (Azure/GCP) and Bash scripting.
  • Advanced Docker knowledge, including storage, volumes and permissions.
  • Strong grounding in software engineering principles, version control and CI/CD.
  • Ability to review and improve others’ code with a collaborative approach.
  • Excellent communication skills and confidence presenting technical work.
  • Experience mentoring or line-managing technical team members.
  • Eligible for UK security clearance (British citizenship and UK residency for 5+ years).

What’s in It for You:

  • A genuinely entrepreneurial environment with autonomy and variety.
  • Projects spanning multiple industries, technologies and data challenges.
  • 26 days’ holiday + bank holidays + your birthday off.
  • BUPA private healthcare and a £1,000 annual development budget.
  • Performance-based bonus and hybrid working from a modern Shoreditch office.
  • Work from abroad for one month each year.
  • Regular socials, snacks and a supportive, ambitious team.

Think it could be a fit? We’d love to hear from you.

We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, colour, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.

By applying you are confirming you are happy to be added to the Addition Solutions mailing list regarding future suitable positions. You can opt out of this at any time simply by contacting one of our consultants.

Senior Software Engineer in City of London employer: Addition

Join a fast-growing consultancy in London that is at the forefront of AI and data science, where you will have the opportunity to lead innovative projects and work with cutting-edge technologies. Enjoy a supportive and entrepreneurial work culture that values autonomy, offers generous benefits including 26 days' holiday, private healthcare, and a £1,000 annual development budget, as well as the flexibility to work from abroad for one month each year. With a focus on employee growth and mentorship, this role provides a unique chance to make a meaningful impact while advancing your career in a dynamic environment.
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Contact Detail:

Addition Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Senior Software Engineer in City of London

✨Tip Number 1

Network like a pro! Reach out to your connections in the industry, attend meetups, and engage with online communities. You never know who might have the inside scoop on job openings or can refer you directly.

✨Tip Number 2

Show off your skills! Create a portfolio showcasing your projects, especially those involving Python and FastAPI. This will give potential employers a taste of what you can do and set you apart from the crowd.

✨Tip Number 3

Prepare for interviews by practising common technical questions and coding challenges. Use platforms like LeetCode or HackerRank to sharpen your skills. Remember, confidence is key when presenting your solutions!

✨Tip Number 4

Apply through our website! It’s the best way to ensure your application gets noticed. Plus, we love seeing candidates who take the initiative to connect directly with us.

We think you need these skills to ace Senior Software Engineer in City of London

Python Application Development (FastAPI)
SQL
Data Pipeline Development
API Development
Backend Services Development
Cloud Platforms (Azure/GCP)
Bash Scripting
Docker
Software Engineering Principles
Version Control
CI/CD
Technical Documentation
Communication Skills
Mentoring

Some tips for your application 🫡

Tailor Your CV: Make sure your CV reflects the skills and experiences that match the Senior Software Engineer role. Highlight your Python (FastAPI) expertise and any relevant projects you've led, as we want to see how you can contribute to our team.

Craft a Compelling Cover Letter: Your cover letter is your chance to shine! Use it to tell us why you're passionate about AI and data science, and how your background makes you a perfect fit for this consultancy. Keep it engaging and personal!

Showcase Your Projects: If you've worked on any complex software projects, make sure to mention them in your application. We love seeing real examples of your work, especially those involving data pipelines and backend services.

Apply Through Our Website: We encourage you to apply directly through our website. It’s the best way to ensure your application gets into the right hands and shows us you're serious about joining our ambitious team!

How to prepare for a job interview at Addition

✨Know Your Tech Inside Out

Make sure you brush up on your Python and FastAPI skills. Be ready to discuss your past projects in detail, especially those involving data pipelines and backend services. The more specific you can be about your contributions, the better!

✨Showcase Your Problem-Solving Skills

Prepare to talk about complex challenges you've faced in previous roles and how you tackled them. This consultancy is all about turning challenges into solutions, so demonstrate your ability to think critically and creatively.

✨Communicate Clearly and Confidently

Since you'll be presenting findings to clients, practice explaining technical concepts in a way that's easy to understand. Use examples from your experience to illustrate your points and show that you can bridge the gap between tech and business.

✨Be Ready to Mentor

As a senior engineer, you'll likely be mentoring junior team members. Think of examples where you've helped others grow or improved team practices. Highlighting your leadership skills will show you're not just a tech whiz but also a team player.

Senior Software Engineer in City of London
Addition
Location: City of London
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  • Senior Software Engineer in City of London

    City of London
    Full-Time
    36000 - 60000 £ / year (est.)
  • A

    Addition

    50-100
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