Senior Software Engineer in London

Senior Software Engineer in London

London Full-Time 48000 - 84000 £ / year (est.) No home office possible
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At a Glance

  • Tasks: Design and develop API integrations while shaping our London engineering culture.
  • Company: Join Cyber Guardian Consulting Group, a leader in cybersecurity for small businesses.
  • Benefits: Enjoy 25 days holiday, pension contributions, and awesome perks like snacks and discounts.
  • Other info: Dynamic startup environment with excellent career growth opportunities.
  • Why this job: Be the first engineer in London and make a real impact on our growth.
  • Qualifications: Strong experience with REST APIs, Python, and cloud technologies required.

The predicted salary is between 48000 - 84000 £ per year.

At Cyber Guardian Consulting Group, we bring Fortune 100-caliber cybersecurity to small and medium-sized businesses. Since 2015, we have been building proactive, lightweight, and cost-effective solutions that meet and exceed modern security requirements. We are security-forward, AI-first, and obsessed with solving real problems for real clients. Headquartered in New York's Hudson Valley with offices in Hudson Yards and Brooklyn, we are now expanding to London—and looking for our first engineer on the ground to help us do it.

About the Role

This is a senior engineering role. You will be the first CGCG engineer in London, which means you won’t just write code—you will help shape how we build, hire, and operate as we grow our UK presence. You will work closely with our US-based engineering and leadership teams while laying the groundwork for what comes next in London. The role starts fully remote. Once we establish a London office, it will transition to hybrid.

What You’ll Do

  • Design, develop, and maintain API-based integrations with third-party platforms
  • Build and maintain RESTful services, webhooks, and asynchronous workflows
  • Troubleshoot integration failures, API errors, and data inconsistencies
  • Work with external vendors and internal stakeholders to understand integration requirements
  • Ensure integrations meet security, performance, and reliability standards
  • Write clear documentation for integration logic, APIs, and data mappings
  • Monitor integrations and improve observability (logging, alerts, retries)
  • Help shape engineering culture and hiring as we build out the London team

Required Qualifications

  • Strong experience working with REST APIs and JSON/XML payloads
  • Proficiency in Python or other backend languages
  • Proficient or experienced with cloud technologies such as AWS, Azure, or GCP
  • Experience debugging API issues using logs, monitoring tools, and API clients
  • Comfortable working with relational databases and SQL
  • Strong communication skills and ability to collaborate across teams and time zones

Nice to Haves

  • Hands-on experience integrating with third-party SaaS systems (ERP, HRIS, CRM, finance platforms, etc.)
  • Comfortable working with Excel
  • Experience with authentication methods such as OAuth 2.0, API keys, JWT
  • IT background with experience supporting, integrating, or administering enterprise software systems
  • Exposure to SOC 2, GDPR, or enterprise security requirements
  • Experience with Infrastructure as Code (CDK, CloudFormation, or Terraform)
  • Knowledge of CI/CD pipelines and deployment automation
  • AWS certification

Why This Role?

  • First on the ground – You will be the founding engineer in London, with real influence over how we grow here
  • Ownership – Own major pieces of our integration infrastructure, from architecture to deployment
  • High-Impact Work – Your code ships fast and directly supports our clients
  • Career Growth – As the London team grows, so do your opportunities to lead it
  • Startup Energy + Stability – We move quickly, backed by real clients, real revenue, and real partnerships

What We Offer

  • 25 days holiday + bank holidays
  • Pension scheme with 10% employer contribution
  • 2% interest rate reduction on home mortgages
  • Snacks sent to your door—you pick, we pay
  • 50% off Apple products
  • UberEats credits & life insurance
  • Peloton discounts & bi-monthly video game tournaments

Senior Software Engineer in London employer: Cyber Guardian Consulting Group, LLC.

At Cyber Guardian Consulting Group, we pride ourselves on being an exceptional employer, offering a dynamic work culture that fosters innovation and collaboration. As the first engineer in our new London office, you'll have the unique opportunity to shape our engineering practices while enjoying a range of benefits including generous holiday allowances, a robust pension scheme, and exciting perks like UberEats credits and discounts on Apple products. Join us in a role that not only promises career growth but also allows you to make a significant impact in the cybersecurity landscape for small and medium-sized businesses.
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Contact Detail:

Cyber Guardian Consulting Group, LLC. Recruiting Team

StudySmarter Expert Advice 🤫

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

✨Tip Number 1

Network like a pro! Reach out to current employees at Cyber Guardian Consulting Group on LinkedIn. Ask them about their experiences and the company culture. This not only shows your interest but can also give you insider info that might help you stand out in interviews.

✨Tip Number 2

Prepare for technical interviews by brushing up on your API knowledge and coding skills. Practice common coding challenges and be ready to discuss your past projects, especially those involving RESTful services and integrations. We want to see how you think and solve problems!

✨Tip Number 3

Show your passion for cybersecurity! Research recent trends and challenges in the industry, and be prepared to discuss how you can contribute to solving these issues at Cyber Guardian. Your enthusiasm can make a big difference in how you're perceived.

✨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, it shows you’re serious about joining our team and being part of our exciting journey as we expand into London.

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

API Development
RESTful Services
Python
Cloud Technologies (AWS, Azure, GCP)
Debugging API Issues
Relational Databases
SQL
Strong Communication Skills
Collaboration Across Teams
Integration with Third-Party SaaS Systems
Authentication Methods (OAuth 2.0, API keys, JWT)
Infrastructure as Code (CDK, CloudFormation, Terraform)
CI/CD Pipelines
Observability (Logging, Alerts, Retries)

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 experience with REST APIs, Python, and cloud technologies like AWS or Azure. We want to see how you can bring value to our team!

Craft a Compelling Cover Letter: Your cover letter is your chance to shine! Use it to explain why you're excited about joining Cyber Guardian Consulting Group and how your background aligns with our mission. Let us know how you can contribute to our growth in London.

Showcase Your Problem-Solving Skills: In your application, share examples of how you've tackled integration issues or improved API performance in the past. We love seeing candidates who can think critically and solve real problems for real clients, just like we do!

Apply Through Our Website: We encourage you to apply directly through our website. It’s the best way for us to receive your application and ensures you’re considered for this exciting opportunity. Plus, it shows us you’re keen on being part of our journey!

How to prepare for a job interview at Cyber Guardian Consulting Group, LLC.

✨Know Your APIs Inside Out

Since the role focuses heavily on API-based integrations, make sure you brush up on your knowledge of REST APIs and JSON/XML payloads. Be ready to discuss your past experiences with these technologies and how you've tackled integration challenges.

✨Showcase Your Problem-Solving Skills

Cyber Guardian Consulting Group values real problem-solving abilities. Prepare examples of how you've debugged API issues or improved integration processes in previous roles. Highlight your analytical thinking and how you approach troubleshooting.

✨Demonstrate Team Collaboration

As you'll be working closely with teams across different time zones, emphasise your strong communication skills. Share instances where you've successfully collaborated with external vendors or internal stakeholders to meet integration requirements.

✨Get Familiar with Their Culture

Since you'll be shaping the engineering culture in London, do some research on Cyber Guardian's values and work environment. Think about how your personal values align with theirs and be prepared to discuss how you can contribute to building a positive team culture.

Senior Software Engineer in London
Cyber Guardian Consulting Group, LLC.
Location: London
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