Senior Software Engineer, Backoffice Platform

Our everyday digital experiences are in the middle of a realtime revolution: chatting alongside a livestream getting realtime financial updates or working with colleagues in a shared online space. Consumers now expect realtime as standard and Ably powers a large part of it.

We put developers first. Our products help teams build extend and deliver realtime digital experiences delivering over 700 billion messages to more than 2 billion devices every month. Teams at HubSpot Fin Dialpad NASCAR Sportsbet and General Motors all build on Ably.

Working at Ably means helping build the infrastructure that will shape the next generation of the internet. More of what people do online is becoming live shared and interactive which only makes what we build more relevant and more necessary. AI is the latest place that shows up. Theres still so much to build and wed like your help with it.

Ablys back office platform is where every customer account is managed. It holds the packages entitlements and limits that determine what each of our customers can do and it runs the tooling our Finance Customer Success and Support teams rely on every day.

This is an opportunity to take ownership of a platform the whole business depends on with the scope to decide how it should work rather than maintain someone elses decisions. Youll be hands-on across entitlements administration tooling and billing working closely with our Head of Infrastructure and our Developer Experience team and directly with the teams who use what you build.

We work in an AI-first engineering culture: AI tools are part of how we plan prototype and iterate though engineers own every technical decision and human judgment is the quality bar that everything is measured against.

• Run the back office platform. Youll look after the systems holding every customers packages entitlements limits and billing along with the tooling Finance Customer Success and Support use daily.
• Solve problems not tickets. Youll be handed a problem usually described by the people living with it rather than specified in advance and youll own the design as well as the delivery.
• Make admin work for the people who use it. Staff should be able to see what a customer has bought how theyre billed and what limits they have make a change and trust the result without needing to understand our internal models.
• Partner across the company. Finance Customer Success Support and Engineering are all your users. Youll learn their processes well enough to question a requirement rather than just build it.
• Champion AI-assisted development. Youll use LLMs and AI tools for planning spikes code and docs to accelerate velocity while owning correctness and architectural quality yourself.
• Make the systems explain themselves. Why a customer has the limits they have and what produced an invoice should be answerable without an engineer digging through code.
• Set the testing bar. Youll decide what good looks like where mistakes cost money build the harness to match and hold the line on production readiness.

• Experience working in large established codebases and the judgement to tell when a system should be extended reworked or replaced outright including the confidence to say so unprompted. Ruby on Rails will help you get to grips with what we have today though we care more about your range than any one language and what you build here may well not be Rails.
• A track record of shaping architecture inside a system you inherited including the data ownership decisions that come with drawing a boundary.
• The ability to self-start work through ambiguity and make good decisions without a lot of hand-holding. Well bring you problems not designs and wed expect you to push back when the answer is to change a process rather than write code.
• An AI-first mindset. You see LLMs and AI tools as productivity multipliers and know where to apply the rigour they cant provide themselves.
• Experience making systems observable and testable. You instrument what you own use it to answer questions you never designed for and have set a test strategy for a system with patchy coverage.

• Experience of usage-based billing systems whether built in-house or on a platform such as Orb Metronome or Chargebee.
• A background in platform or internal tooling teams rather than product teams.
• Experience being the engineer accountable for a system rather than one contributor among many particularly one subject to financial or compliance audit.

Youll join a team of around 60 people working directly alongside senior engineering and leadership. No layers no bureaucracy and real ownership from day one.

We hire the best people wherever they are across the UK and Europe trust them to own their work and share decisions and feedback openly. Twice a year in February and August we all meet in person and we expect everyone to be there.

Remote-first comes with trade-offs. On one side: flexibility no commute long stretches of focus time and a wider pool of people to hire from. On the other: it can feel isolating relationships take effort to build and you miss the chance conversations an office creates. As our only recruiter youll need to manage your own time and stay close to the hiring managers and candidates you work with.

If you do your best work with trust and autonomy this will suit you. If youd rather have an office around you every day it probably isnt the right fit.

Our six values shape how we work day to day:

• Open for all. We default to sharing openly: source decisions and feedback with open minds to match.
• Tech needs humanity. We build with empathy for colleagues and developers alike.
• Even the best do better. We keep raising our own bar driven by curiosity not complacency.
• Bias for action. Once we know enough to act we act rather than waiting for certainty.
• Dependable by default. We take real ownership of what we ship and what we promise.
• Bold creativity wins. We treat big constraints as a reason to think differently not less.

You can read more about how we defined these values on our blog and see the team behind them on ourcareers page.

We believe our differences as individuals are what make us great. Our people are at the heart of what we do and we encourage everyone to be their most authentic self at Ably: we see inclusivity and openness as fundamental to our long-term success. We encourage applications from all backgrounds regardless of age disability gender sexual orientation parental status race religion educational background or neurodiversity. Ably has an amazing opportunity ahead of us and we want anyone to be able to contribute to it.

If you enjoy working as part of a technology company value open source and love solving hard problems wed love to hear from you regardless of whether you fit the job description exactly or not. If in doubt drop us anemail;; were happy to give you advice on your application.

• A remote-first and flexible work environment. Our London office (next to Old Street) is there whenever you want it. Aside from our company get-togethers youre welcome to work wherever suits you best.
• Equity. Were a growing start-up and we want everyone to share in the companys success through our EMI share options programme.
• Enhanced holiday allowance: 28 days of paid annual leave (27 regular days plus a day off to enjoy your birthday).
• Enhanced parental leave so you can spend time with your new family member: up to 16 weeks fully paid for primary caregivers and 4 weeks for secondary depending on length of service.
• A home workstation budget of 500 on joining (and 150 per year after that) so your home office serves you well.
• A personal learning and development budget of 1000 a year plus 5% L&D time during working hours to build your skills.
• Private healthcare with BUPA.
• A medical cash plan covering a range of medical and dental costs.
• Mental wellbeing coaching and counselling from Self Space.
• A monthly wellbeing budget via Juno.
• Life assurance and income protection.
• Access to Tech and Cycle to Work schemes.
• A weekly snack allowance for our end-of-week Need to Know meeting.
• A fully-paid one-month sabbatical after five years with Ably.