Senior Software Engineer - AI / Agentic Systems in London
Senior Software Engineer - AI / Agentic Systems

Senior Software Engineer - AI / Agentic Systems in London

London Full-Time 70000 - 90000 £ / year (est.) No home office possible
MA (Montreal Associates)

At a Glance

  • Tasks: Build and scale cutting-edge AI platforms that automate complex workflows.
  • Company: Exciting AI startup redefining intelligent systems with a collaborative culture.
  • Benefits: Strong compensation, hybrid work model, and rapid career growth opportunities.
  • Other info: Mentor fellow engineers and influence the technical direction of a growing company.
  • Why this job: Join a pioneering team and make a real impact in the AI space.
  • Qualifications: 5+ years in backend engineering with strong Python or Golang skills.

The predicted salary is between 70000 - 90000 £ per year.

We’re partnering with a cutting-edge AI startup redefining how intelligent systems operate at scale. Their mission is ambitious: to push the boundaries of agentic AI and build platforms that automate complex, multi-step human workflows—unlocking entirely new levels of productivity.

This is an opportunity to join early, work alongside world-class AI talent, and directly shape a platform sitting at the intersection of research and real-world deployment.

As a Senior Software Engineer, you’ll play a key role in building and scaling an enterprise-grade AI platform. You’ll operate at the core of the product engineering function—designing systems that power autonomous agents, orchestrate workflows, and enable observability at scale.

This is not just another backend role. You’ll influence architecture, mentor engineers, and help define the technical direction of a rapidly growing AI company.

What You’ll Be Doing

  • Own and drive system architecture and long-term technical strategy
  • Build high-performance, scalable backend systems powering AI-driven workflows
  • Lead design and code reviews, ensuring high standards of quality and security
  • Collaborate closely with AI research, product, and infrastructure teams
  • Improve system reliability, observability, and scalability
  • Mentor engineers and act as a technical multiplier across teams
  • Champion best practices, tooling, and engineering excellence
  • Proactively identify and resolve technical debt

What they are Looking For

Core Experience

  • 5+ years in backend engineering, ideally at Senior level
  • Strong experience with Python and/or Golang
  • Proven track record building and scaling distributed systems or cloud-native platforms (AWS preferred)
  • Experience delivering end-to-end solutions in production environments

Technical Skills

  • API development (REST / GraphQL) and third-party integrations
  • Strong knowledge of databases (SQL & NoSQL)
  • Experience with event-driven systems / messaging (Kafka, RabbitMQ, SQS, etc.)
  • Solid understanding of system design, architecture patterns, and testing frameworks
  • Hands-on experience with monitoring, observability, and instrumentation

Leadership & Impact

  • Strong mentoring capability—raising the bar across teams
  • Ability to communicate across technical and business stakeholders
  • Confident leading complex technical decisions with long-term vision

Working Model

  • Hybrid: 3 days per week onsite (London)
  • Occasional travel between offices (every 4–6 weeks)

Why This Role?

  • Join one of the most exciting AI startups in Europe
  • Work on agentic AI systems at real scale—not just theory
  • Collaborate with top-tier engineers and researchers
  • Significant ownership and influence from day one
  • Strong compensation + rapid career growth opportunities

Senior Software Engineer - AI / Agentic Systems in London employer: MA (Montreal Associates)

Join a pioneering AI startup in London that is at the forefront of agentic systems, where you will have the opportunity to work alongside world-class talent and directly influence the development of cutting-edge technology. With a hybrid working model, a culture that champions innovation and collaboration, and significant opportunities for career advancement, this company offers a dynamic environment where your contributions will be valued and impactful from day one.
MA (Montreal Associates)

Contact Detail:

MA (Montreal Associates) Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Senior Software Engineer - AI / Agentic Systems in London

✨Tip Number 1

Network like a pro! Reach out to people in the AI and software engineering space, especially those who work at companies you're interested in. A friendly chat can open doors that a CV just can't.

✨Tip Number 2

Show off your skills! Create a portfolio or GitHub repository showcasing your projects, especially those related to AI and backend systems. This gives potential employers a taste of what you can do beyond the written application.

✨Tip Number 3

Prepare for technical interviews by brushing up on system design and architecture patterns. Practice coding challenges and be ready to discuss your past experiences in detail—this is where you can really shine!

✨Tip Number 4

Don’t forget to apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, we love seeing candidates who are proactive about their job search.

We think you need these skills to ace Senior Software Engineer - AI / Agentic Systems in London

Backend Engineering
Python
Golang
Distributed Systems
Cloud-Native Platforms
API Development (REST / GraphQL)
Database Management (SQL & NoSQL)
Event-Driven Systems (Kafka, RabbitMQ, SQS)
System Design
Architecture Patterns
Testing Frameworks
Monitoring and Observability
Mentoring
Technical Leadership
Communication Skills

Some tips for your application 🫡

Tailor Your CV: Make sure your CV reflects the skills and experiences that align with the Senior Software Engineer role. Highlight your backend engineering experience, especially with Python or Golang, and any work you've done on distributed systems or cloud-native platforms.

Craft a Compelling Cover Letter: Use your cover letter to tell us why you're passionate about AI and how your background makes you a perfect fit for our team. Share specific examples of projects where you've influenced architecture or mentored others, as this will resonate with our mission.

Showcase Your Technical Skills: In your application, don't shy away from detailing your technical expertise. Mention your experience with API development, databases, and event-driven systems. We want to see how you can contribute to building high-performance, scalable backend systems.

Apply Through Our Website: We encourage you to apply directly through our website. This way, we can ensure your application gets the attention it deserves. Plus, it’s the best way to stay updated on your application status and any next steps!

How to prepare for a job interview at MA (Montreal Associates)

✨Know Your Tech Inside Out

Make sure you’re well-versed in Python and Golang, as these are key for the role. Brush up on your experience with distributed systems and cloud-native platforms like AWS, as you’ll likely be asked to discuss your past projects and how they relate to the company’s mission.

✨Showcase Your Leadership Skills

Since this role involves mentoring and influencing technical direction, prepare examples of how you've led teams or projects in the past. Be ready to discuss how you’ve raised standards and championed best practices in your previous roles.

✨Understand the Product and Its Impact

Research the company’s AI platform and its applications. Be prepared to discuss how you can contribute to building scalable backend systems that power AI-driven workflows. Showing genuine interest in their mission will set you apart.

✨Prepare for Technical Discussions

Expect to dive deep into system design and architecture patterns during the interview. Brush up on API development, databases, and event-driven systems. Practising coding challenges related to these topics can also help you feel more confident.

Senior Software Engineer - AI / Agentic Systems in London
MA (Montreal Associates)
Location: London

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