Fullstack Engineer (Backend leaning)

Ben; Greater London; Hybrid; GBP 85,000 - 120,000; Full time

Benefits offered by this job

Competitive base salary

Equity

Ben Balance £100/month (increasing to£

Weekly lunch in office

28 days of holidays (+ 5 buy/sell)

Work-from-abroad scheme

Enhanced parental leave

Private medical insurance

Life assurance with health check

Mental health support

Job summary

Ben is seeking a backend-leaning full-stack engineer to help build and scale features powering our benefits platform. You will work on APIs, services, and integrations, collaborating with product, design, and engineering to shape the roadmap and deliver end-to-end solutions.

You will contribute to data models, architecture decisions, and security-focused implementations, with an emphasis on enterprise-readiness and scalable, reliable software.

Qualifications

• Strong experience building modern web apps, especially backend systems.
• Proficiency in Python and TypeScript, and willingness to learn quickly if needed.
• Experience designing and shipping APIs and services at scale.
• Commitment to security best practices and enterprise readiness.

Responsibilities

• Build and ship backend-leaning full-stack features across APIs, services, integrations, and React frontend.
• Balance fast shipping with thoughtful engineering and quality.
• Collaborate with PMs to understand context and shape solutions early.
• Work with designers to create polished, intuitive experiences.
• Contribute to architectural thinking and implementation planning.

Skills

Backend systems

Python

TypeScript

APIs

Security

AWS Well-Architected

Collaboration

Tools

React

Job description

Our Mission

We're not your average benefits platform; we're the unordinary force that uplifts people's lives. Our technology is the link that connects the entire benefits ecosystem, creating better outcomes for employers, employees, brokers, and providers.

Our mission is clear: we're here to create a world where everything operates at its very best, ensuring that every employee receives the support they need to live life to the fullest, both at work and beyond.

Your Mission

As a backend leaning Full-stack Engineer at Ben, you’ll help build and scale the features that power our platform from benefits browsing and payments to provider integrations and smart admin tooling.

You’ll take features from idea to production: understanding the problem, scoping solutions, building, shipping, and making sure what you deliver truly solves the need. You won’t just be handed tickets, you'll contribute to shaping why we build things, how we build them, and what the future of our product looks like.

You’ll collaborate across product, design, and engineering to make decisions that matter: data models, integration patterns, API design, scalability choices, and how we support a system used by hundreds of thousands of people. At Ben, everything is connected so what you build helps power payroll workflows, provider integrations, notifications, and everything in between.

And you’ll do all this as part of a fun, fast-moving startup, spending 2 days a week with the team in our Barbican office.

Things you will be working on…

• Build and ship backend-leaning fullstack features across the product (APIs, services, integrations, and React frontend)

• Are pragmatic and can balance shipping fast with thoughtful engineering

• Work closely with product managers to understand context and shape solutions early

• Collaborate with designers to create polished, intuitive experiences

• Contribute to technical discovery, architecture thinking, and implementation planning

• Ask product and UX questions when something doesn't quite add up

• Design with scale, reliability, and enterprise readiness in mind (security, compliance, flexibility)

• Own your work from idea to production and care about the impact once it’s live

• Help improve developer experience, tooling, and internal standards

• Ensure security best practices (OWASP, AWS Well-Architected, etc.) are embedded in how we ship software

You will thrive in this role if you…

• Have strong experience building modern web apps, especially backend systems

• Are comfortable in Python and TypeScript (or excited to learn quickly)

• Care about solving real user problems, not just closing tasks

• Enjoy collaborating directly with PMs and designers without needing perfect specs

• Like figuring out the how with autonomy and the why with curiosity

• Know what it means to build for enterprise scale

• Are pragmatic able to balance scrappy shipping with thoughtful engineering

• Communicate clearly and enjoy working with friendly, ambitious people

Nice-to-haves, but not deal-breakers:

• Experience with financial platforms, HR tech, or B2B SaaS

• Experience building reliable workflows with tools like Temporal

You will not love this role if you…

• Prefer a slow or highly predictable pace we move quickly and value action

• Feel uncomfortable owning projects end-to-end and being accountable for outcomes

• Prefer maintaining the status quo we challenge assumptions and improve constantly

• Want a heavily structured environment we’re still building processes as we grow

• Struggle with ambiguity or prefer prescriptive direction you’ll get context, but you’ll need to figure things out

• Wait for others to take initiative this is a proactive, high-performance team

Not sure if you meet 100% of the requirements?

That’s okay, careers aren’t linear. If you have a strong technical foundation, solid backend experience, and enthusiasm for fullstack engineering in a fast-moving startup, we’d love to hear from you. Just make sure you feel confident contributing meaningfully from day one.

Our Compensation & Benefits

It’s important to us to practise what we preach when it comes to our benefits. We know what good looks like and we want to provide the best for our team, with a comprehensive and inclusive benefits package. This means you have a choice over the things that are most important to you. You can see a selection below, along with the full offering here.

Competitive base salary + equity, so you own what you build

£100 monthly personal Ben Balance: for whatever works for you, whether that's Netflix, Spotify, or a really expensive cup of coffee! This allowance will increase by £50 for each year of service until you reach £250

Weekly lunch provided in office so you can spend quality time with the team over some tasty food!

28 days of holidays a year plus bank holidays, and an option to buy or sell 5 days per year. Also, your holiday entitlement will increase to 30 days at your 3rd year of service!

Work-from-abroad scheme, so you can support your travels, enjoy an extended holiday, or visit loved ones.

Enhanced parental leave and workplace nursery scheme to support with the cost of childcare in a nursery setting

Comprehensive Private Medical Insurance

Funded Life Assurance cover with the option to voluntarily increase - this also includes an annual health check

Comprehensive and tailored mental health support and professional coaching through a leading provider

Diversity and Culture at Ben

We are organically growing a brilliantly diverse, inclusive and respectful bunch of people we are extremely proud of. This should go without saying but all applications are very much welcome. If you need any adjustments to support you with your application, just let us know by emailing ----- You can learn more about DEI at Ben here.