Senior Software Engineer

6+ years of experience building and operating production-grade software systems in complex environments.

Strong experience developing backend services in PHP, with the ability and desire to work language-agnostically and quickly learn new languages, frameworks, and codebases as needed.

Proven experience working on reliable, scalable, and highly available systems, with a clear understanding of tradeoffs in performance, resilience, and maintainability.

Practical experience designing or contributing to platform-level reliability solutions, such as observability tooling, alerting strategies, or reliability standards.

Solid understanding of distributed system fundamentals, including failure modes, latency, capacity, and graceful degradation.

Experience defining and improving operational practices, including incident response, post-incident reviews, and preventative engineering.

Strong knowledge of relational databases and data access patterns, with an operational mindset toward performance and reliability.

Hands-on experience deploying and operating services in cloud environments (AWS or equivalent).

Familiarity with secure, compliance-aware development practices (eg: PCI, SOC 2, OWASP).

Ability to influence technical direction across teams through clear communication, sound judgment, and collaboration.

Annual bonus scheme dependent on individual and company performance

Annual salary of £50,000 - £60,000

25 days holiday each year (+ bank holidays + 1 day after each year of service with up to a max. of 30 days)

Workplace pension scheme

Private medical insurance (upon 30 days of employment)

7 hours per day, 35 hours per week

A remote first culture

Great work-life balance with our Flexi-time policy

Family Friendly policies (Enhanced Maternity and Paternity Pay and Shared Parental Leave).

A chance to develop with an allocated company training budget

Bike2Work Scheme

Lifeworks, an Employee Assistance Programme which offers wellbeing, family and financial support services, such as assessments, resources and even 1:1 counselling sessions. It also offers interesting perks such as discounts on gyms, restaurants, high street retailers and cinema tickets

A strong commitment to employee wellbeing including mental health first aiders

Employee referral scheme with generous financial reward

Bonusly colleague reward scheme

We believe that having a diverse group of employees strengthens both our work and our workplace. We’re focused on making NMI more diverse and welcoming with initiatives like having a dedicated Diversity, Equity & Inclusion action group, diversity goals for hiring, anonymized resume screening, affinity groups such as our Women's network and LGBTQ+ Network, open forums for discussions on diversity and social justice, and measuring inclusion and belonging as part of our regular employee engagement surveys.

Equal Opportunity

NMI is committed to providing equal employment opportunity for all persons regardless of race, color, religion, sex, age, marital status, national origin, sexual orientation or sexual identity, genetic information, citizen status (except those that do not have the legal right to be employed in the United States), disability, military service, service member, veteran status, or any other basis protected by applicable law.

Please be aware that all offers of employment are made subject to receipt of satisfactory background and financial checks.

Attention job applicants: Please note that in compliance with the data protection regulations within your jurisdiction, any personal information submitted with your job application may be collected and used by NMI for the purpose of recruitment and employment-related activities. By submitting your application, you acknowledge and provide explicit consent to the processing of your personal information as described in our privacy policy found on our website. For more information on how we process your information, please read our privacy policy here: https://www.nmi.com/legal/privacy-policy/

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