Job Title: Senior DevOps Engineer

Reports to: Technical Operations Manager

Location: London /Hybrid  

Term: Permanent / Contract / Full-time 

ABOUT US: 

B4B Payments is a multi-award-winning, global financial services technology company offering an advanced transaction payments platform and APIs for emerging payments and financial services. Our flexible technology and comprehensive services include embedded finances, payment accounts, FX, rapid payouts, physical and virtual card issuing, and BIN sponsorship.

With 20 years of expertise in payments, B4B Payments is headquartered in the UK. In Europe, B4B Payments is regulated as an e-money institution (EMI) authorised by the Financial Conduct Authority (FCA) and the Bank of Lithuania and is a Mastercard® Principal Member.

B4B Payments’ US division (B4B Payments USA, Inc. ) is based in Boston, MA, and specialises in enabling companies to reduce costs and increase efficiency in managing corporate expenditure and global payouts.

B4B Payments Europe and US divisions offer full and partial program management and support, in addition to comprehensive technical, regulatory, and service support to fintechs looking to launch or grow domestically and internationally.

B4B Payments is a Banking Circle Group company. A next-generation financial technology platform for global commerce, Banking Circle Group comprises a rich set of complementary e-commerce solutions. From international cross-border payments, accounts and liquidity management, and embedded finance to business payments & card issuing, B2B Buy Now Pay Later, and account-to-account payment methods, the ecosystem is delivering modern financial solutions to 

some of the largest and most successful companies around the world, as they accelerate the digitalisation of their customer and supply-chain.

About the Role

We’re seeking a Senior DevOps Engineer to play a key role in the evolution of our cloud platform and payments infrastructure. Working within a highly regulated fintech environment, you’ll be responsible for ensuring our platforms are secure, scalable, resilient and highly automated.

This position offers the opportunity to influence engineering standards, cloud architecture, platform strategy and DevOps best practices across a business delivering API-driven payment and card solutions. B4B is implementing an API-first payments platform supporting cards, accounts, payments, FX, webhooks and OAuth-secured integrations.

We’ve fully embraced AI-assisted engineering across the team, and we’re looking for people who want to push that further, not someone who merely tolerates it.

RESPONSIBILITIES: 

What you’ll be doing

• Own and evolve cloud infrastructure across production and non-production environments
• Integrate AI tooling into daily engineering workflows (code, infrastructure, incident response) as a default way of working
• Design and implement Infrastructure as Code standards
• Build and optimise scalable CI/CD pipelines to accelerate software delivery
• Drive platform reliability, observability and operational excellence
• Collaborate with Software Engineers to deliver resilient solutions
• Champion DevOps culture, automation and engineering best practices
• Lead incident response, root cause analysis and platform improvements
• Implement monitoring, logging and alerting frameworks to support critical applications
• Ensure infrastructure meets security, governance and compliance requirements
• Support business continuity, disaster recovery and high-availability initiatives
• Mentor engineers on cloud, automation and DevOps practices

Technical environment

You are likely to have experience across several of the following:

• AWS, Azure or GCP
• Kubernetes or ECS
• Terraform
• GitHub Actions, Azure DevOps, GitLab CI or Jenkins
• Linux
• MySQL, MariaDB or postgreSQL
• Python, Bash or PowerShell
• Prometheus, Grafana, Cloudwatch or similar monitoring tools
• Microservices and distributed systems
• API-driven platforms
• Security and IAM best practices

What we’re looking for

Essential

• Genuine, demonstrated enthusiasm for AI-assisted engineering – daily use of tools like Claude Code, Copilot or equivalent as a core part of how you work, not a checkbox. This is not a role for someone skeptical of AI tooling or resistant to changing how they work
• Significant experience in a Senior DevOps, Platform Engineering or Site Reliability Engineering role
• Deep expertise in public cloud infrastructure
• Strong Kubernetes and containerisation experience
• Proven experience implementing Infrastructure as Code using Terraform or similar
• Experience designing and maintaining enterprise-grade CI/CD pipelines
• Strong understanding of networking, security and cloud architecture
• Track record of improving reliability, scalability and operational performance
• Ability to work closely with development teams to improve engineering velocity

Highly desirable

• Experience with PCI-DSS, SOC2 or similar regulatory frameworks
• Experience within fintech, payments, banking or other regulated industries
• Exposure to payment processing, card issuing or financial services technology – card and payment infrastructure supporting payment rails such as Faster Payments, SEPA, SWIFT and ACH
• Experience supporting high-volume transaction platforms
• Experience with event-driven architectures and API platforms

Why this role?

• Influence the future direction of a modern cloud platform
• Be part of a team that has gone all-in on AI-assisted engineering and is looking for people who want to go further with it, not adopt it reluctantly
• Opportunity to shape DevOps and platform engineering best practice
• Work on business-critical payment infrastructure
• High level of ownership and autonomy

What we offer 

• 25 days annual leave 
• Annual wellness day off 
• Access to one-to-one confidential counselling sessions through our Employee Assistance Programme 
• Access to retail & other discounts 
• Vitality health care plan  
• Access to ‘’Nous Finance-a smart way to save money’’   
• Learning & development support 
• Ride-to-work scheme
• Regular socials and a relaxed working environment 

Make a difference:

We are always on the lookout for talented individuals to help take us further – it is important to us to hire the right people for roles that work for both us and the individual.All interview processes will assess the following behaviours:

• Ownership & Accountability: We take responsibility for outcomes, not just tasks.
• Drive, Ambition & Initiatives: We move fast, think big, and don’t wait to be asked.
• Positive Mindset & Resilience: We solve problems with energy, even when the path isn’t clear
• Collaboration & Trust: We work together openly, with each other, with clients and with partners
• Customer & Commercial Focus: Every decision starts with the customer and ends with the values delivered. 

NOTE:

We kindly request that you contact us by submitting your CV, indicating your current location, and confirming your eligibility to work in the United Kingdom. We assure you that our team will promptly respond to your inquiry.

Please note that we are not considering inquiries or applications from Agencies. Additionally, we regret to inform you that we are unable to provide visa sponsorships at this time