
Ably · London
Our everyday digital experiences are in the midst of a realtime revolution. Whether chatting alongside a livestreaming event, receiving realtime financial infor...
Our everyday digital experiences are in the midst of a realtime revolution. Whether chatting alongside a livestreaming event,
receiving realtime financial information, or working with colleagues in an online collaborative environment - consumers simply
expect realtime digital experiences as standard. At Ably we’re not just witnessing this revolution, we’re powering it - at scale.
At the heart of our mission lies a commitment to putting developers first. Ably provides a suite of products to build, extend, and
deliver powerful digital experiences in realtime, delivering billions of messages for millions of devices every day and supporting
organizations like Harness, EA, Panasonic and HubSpot.
Working at Ably means helping to build the infrastructure and technology that will power and shape the future of the internet. The
opportunity in front of us is immense. And we’d like your help.
Thousands of developers around the world use Ably's SDKs and APIs to power realtime features in their applications. The Developer
Experience team is responsible for ensuring that Ably is a platform that exemplifies great developer experience, and is a
reference point that other companies aspire to.
As our Senior Developer Experience Writer, you’ll be contributing directly to this goal; helping developers to quickly understand
Ably, build confidently and ultimately succeed with the platform. At its core, this is an AI-focussed role; you’ll be in charge of
setting up the foundations that empower engineers to produce first-class developer documentation with AI at scale. You’ll use AI
to automate checks, maintain quality, and allow for rapid iteration in the content itself, as well as in the documentation
platform. You’ll still be setting the standards for technical content across the business, and using your expertise to shape the
information architecture.
This is a modern take on technical writing; you’ll be using AI to both increase your own output, whilst also increasing the
velocity of other contributors. The same core values still apply though - ensuring that users can quickly understand and succeed
with Ably.
content meets Ably’s quality standards.
that PRs are always exceeding standards. You’ll leverage AI to check for technical accuracy, and make sure that content always
assists developers in learning and succeeding with Ably in the fastest and easiest ways possible.
pattern to write similar content. This will be in the format of templates and skills that team members can leverage.
producing accurate, well-structured, developer-friendly content.
content meets editorial standards, is technically accurate, and is free from AI-generated patterns that undermine trust or
clarity.
structure and tooling. This includes making sure content is logically structured, and easily navigable, and that it helps
external developers understand Ably in new and exciting ways.
that others have visibly learned from.
quality content at scale is a bonus.
output and limitations.
in at least one programming language (ideally JavaScript).
delight developers.
completion.
on rapid iteration, with excellent communication and cross-functional collaboration skills.
We’re tackling planet-scale problems and our ambitions are a testament to that. You’ll join a successful, deeply motivated and
collaborative team that thrives on innovation, experimentation and autonomy. To get a sense of life at Ably, visit our careers
page. You can also read about the origins of Ably's core values on our blog.
We believe in fostering a culture that's built on inclusivity and mutual respect among all team members, and we recognise that
each individual is different and will want to be supported in their role in different ways. We provide a range of perks and
benefits to aid folks' development and wellbeing, allowing them to be their best selves and do great work.
Old Street) and we get together as a company twice per year. Aside from that, you’re welcome to work wherever suits best for
you.
options programme.
enjoy your birthday).
recover.
that you have everything you need to work comfortably.
skillset.
We believe our differences as individuals is what makes 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 creating long-term success as
an organization. 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 that opportunity.
If you enjoy working as part of a technology company, value open source, and love solving hard problems - then we’d love to hear
from you, regardless of whether you fit the job description exactly or not. If in doubt, drop us an email; we’d be more than happy
to give you some advice on your application.
About the team The Developer Experience team owns the internal platform that every SumUp engineer touches daily: CI/CD pipelines, observability tooling, our developer portal, and an emerging AI platform. It's a high-visibility role: the work you lead directly shapes the productivity of hundreds of engineers across the company. We're looking for an experienced Engineering Manager to take full ownership of this domain, grow a team of seven engineers, and define what great developer experience looks like at SumUp as we scale. What you'll do * Lead and develop a growing team of 5+ highly motivated engineers across observability, CI/CD, developer portal (Backstage), and FinOps tooling — setting clear priorities and establishing strong ways of working * Own and evolve the technical roadmap across all DevEx domains, communicating trade-offs clearly to engineering leadership and internal stakeholders * Shape the AI Platform domain from the ground up — defining its charter and identifying where AI tooling adds real value for SumUp engineers * Partner with product engineering managers and platform peers to drive measurable improvements in deploy frequency, onboarding time, and support load * Build the case for how the team needs to grow, identifying skill gaps and preparing the organisation for a future where this role leads other engineering managers You'll be great for this role if… * You have proven experience leading platform, infrastructure, or internal tooling teams at a senior engineering manager level, with a track record of owning a technical domain end-to-end * You bring strong technical foundation across the DevEx stack: CI/CD, observability (Prometheus, Grafana, or equivalent), Kubernetes-based platforms - sufficient to make sound architectural decisions and earn engineer trust * You know how to lead through ambiguity and organisational change, including reorgs, scope shifts, or leadership transitions * You can build and communicate a product-style roadmap for a platform domain, with clear prioritisation and a narrative that lands with both engineers and senior stakeholders * You have a genuine curiosity about AI tooling in an engineering context and the confidence to lead a greenfield domain in this space Why you should join SumUp * 🌎 Opportunity to work with a truly global, multicultural team from our central London office location - this involves an office-first setup * 🌈 Commitment to Diversity and Inclusion: be part of a workplace that values and promotes diversity, fostering an inclusive environment where everyone's perspectives are respected and embraced * 🚀 Enrolment onto our Virtual Stock Option programme: you will own a stake in SumUp's future success * 📚 A dedicated annual L&D budget for attending conferences and/or advancing your career through further education * 🌴 Break4me: 1-month sabbatical after 3 years of service * 🔗 Referral Bonus: earn additional rewards by referring talented individuals to join the SumUp team * 🏖️ Generous time off: enjoy 28 days of paid leave, plus bank holidays and special leaves * 🏥 Health matters: private health insurance, including optical and dental * 🚗 Life made easier: salary-sacrifice commuter benefits via Gogeta * 💼 Financial security: retirement scheme (SumUp matches 7% when you contribute 5%) * 🛡️ Peace of mind: life insurance from MetLife for 2× your salary About SumUp Be empowered to do more that matters. At SumUp, we're on a mission to empower small businesses across the globe by providing simple and affordable tools that allow them to thrive. Today, over 4 million businesses in 37 markets rely on SumUp as their financial partner to manage payments, finance and customer relationships. Our commitment to small businesses is reflected in our diverse team of over 3,000 SumUppers from over 90 nationalities, united by global collaboration and an innovative mindset. Our core values lay the foundation for who we are and what we stand for, shaping our work culture and driving our success. We foster inclusivity and a continuous learning culture, providing a safe space for personal and professional growth. Our differences make us unique and strong as we strive to create an environment where everyone belongs and feels supported, no matter how they identify. SumUp is proud to be an Equal Employment Opportunity employer, actively seeking and embracing diversity in our workforce. We don't make hiring or employment decisions based on race, colour, religion or religious belief, ethnic or national origin, nationality, sex, gender, gender identity, sexual orientation, disability, age or any other basis protected by applicable laws or prohibited by company policy. Our commitment extends beyond recruitment to creating a safe and respectful workplace where harassment of any form is strictly prohibited. Discover more about our culture and opportunities on our careers website, and follow our journey on LinkedIn, Instagram, and TikTok. Job Application Tip We recognise that candidates feel they need to meet 100% of the job criteria in order to apply for a job. Please note that this is only a guide. If you don’t tick every box, it’s ok too because it means you have room to learn and develop your career at SumUp.
Qube Research & Technologies (QRT) is a global quantitative and systematic investment manager, operating in all liquid asset classes across the world. We are a technology- and data-driven group implementing a scientific approach to investing. Combining data, research, technology, and trading expertise has shaped our collaborative mindset, which enables us to solve the most complex challenges. QRT’s culture of innovation continuously drives our ambition to deliver high-quality returns for our investors. You will join the Core Trading Platform team, which is responsible for the design and operation of QRT’s global electronic trading infrastructure. This team builds and maintains the ultra-low latency systems that underpin real-time trading, managing performance-critical workflows across global markets. You will work closely with developers, traders, and operations to optimise system behaviour, reduce latency, and ensure platform reliability at scale. Your future role within QRT * Design and implement low-latency trading systems on Linux, focused on throughput, reliability, and determinism * Engineer scalable, high-performance distributed systems that support global real-time trading workflows * Analyse system behaviour using low-level tools such as packet captures, core dumps, and runtime profilers * Apply deep expertise in TCP, UDP, and multicast to understanding trade-offs in short-haul vs long-haul networks * Continuously profile, benchmark, and optimise code to reduce latency and increase throughput * Engage across the full software lifecycle: from architecture to debugging in live trading environments Your present skillset * 5+ years of professional C++/C development experience on Linux, including modern C++ and multithreading * Strong expertise in TCP, UDP, multicast, and performance trade-offs in low-latency networks * Experience building and operating high-throughput distributed systems in production * Familiarity with scalable I/O models (e.g., epoll, io_uring), lock-free structures, and concurrent programming * Deep attention to detail with a rigorous approach to performance troubleshooting and optimisation * Proficiency in system-level tools (e.g., gdb, perf, tcpdump, valgrind, wireshark) * Comfortable working autonomously and taking ownership from problem to solution * Scripting experience (e.g., Python, Bash) and exposure to CI/CD or observability tooling is a plus * Prior exposure to electronic trading or exchange-facing systems is advantageous QRT is an equal opportunity employer. We welcome diversity as essential to our success. QRT empowers employees to work openly and respectfully to achieve collective success. In addition to professional achievement, we are offering initiatives and programs to enable employees achieve a healthy work-life balance.
Our everyday digital experiences are in the midst of a realtime revolution. Whether chatting alongside a livestreaming event, receiving realtime financial information, or working with colleagues in an online collaborative environment - consumers simply expect realtime digital experiences as standard. At Ably we’re not just witnessing this revolution, we’re powering it - at scale. At the heart of our mission lies a commitment to putting developers first. Ably provides a suite of products to build, extend, and deliver powerful digital experiences in realtime, delivering billions of messages for millions of devices every day and supporting organizations like Harness, EA, Panasonic and HubSpot. Working at Ably means helping to build the infrastructure and technology that will power and shape the future of the internet. The opportunity in front of us is immense. And we’d like your help. ABOUT THIS ROLE As the Technical Lead for Developer Experience at Ably you will report directly to our CTO and co-own the DevEx vision and strategy, transforming our dashboard, documentation platform, and control plane into a world-class experience. You are a senior, hands-on engineer who’s passionate about building for developers like yourself; someone who’ll obsess over the developer journey and elevate the user experience of the Ably platform. You’ll blend deep full-stack expertise with a strong product mindset and lead a team of five engineers where the feedback loop is immediate, because you and your team are the target users of the very ecosystem you are building. DAY TO DAY YOU WILL * Obsess over developer experience. You’ll have broad responsibility for elevating how developers interact with Ably’s platform and services, partnering with the DevEx PM as a unified leadership team to deliver a developer experience that becomes a reference point for the industry. * Lead technical execution and vision. You’ll lead a team of five engineers building customer-facing web applications and own the technical architecture and design decisions for our dashboard, docs platform, marketing website, and billing UI. * Drive a product-first engineering culture. You’ll foster an environment where engineers are themselves principal stakeholders of product features, and obsess over customer outcomes. You’ll challenge the "feature factory" mentality and build a team that takes true ownership of the product. * Thrive in a rapid iteration environment. You’ll operate in a high-velocity workspace where PMs, customers, and engineers co-create features. You’ll lead the team in working full-stack to iterate, improve, and ship improvements quickly. * Champion AI-assisted development. You’ll be a catalyst for AI adoption across the team. You’ll leverage LLMs and AI tools to accelerate velocity without compromising on engineering integrity. * Guide engineering outcomes and quality. You’ll set and enforce high standards for code review, testing, and production readiness. You will participate in incident response and coordinate with the Infrastructure team on platform dependencies and deployments. * Mentor and grow the team. You’ll manage performance, career development, and hiring. You will hold the team accountable for delivery commitments while providing the mentorship needed to turn engineers into product-minded leaders. WE'D LOVE TO TALK IF YOU HAVE * A natural empathy for developer customers because you are the target audience. You are genuinely excited about building developer tools and instinctively understand what good looks like. You're fluent in API design, documentation, and the nuances that differentiate a great developer journey. * Extensive experience leading teams at B2B SaaS or API-first companies. You have a track record of building product-minded engineering cultures where teams take initiative and ownership of product outcomes. * A strong software engineering background with expertise in React, TypeScript, and modern JavaScript, alongside backend experience in Ruby on Rails or Node.js. You're comfortable writing code and building prototypes using our APIs, and have built and shipped customer-facing web applications at scale. * An AI-first mindset. You champion the use of LLMs and AI tools as productivity multipliers for the team. You see AI as an enabler for higher velocity and output, not a replacement for engineering judgment. * Experience at a startup or growth-stage company or adaptability to thrive in a fast-paced, agile environment with a focus on rapid iteration. To be effective in this role you’ll need excellent communication and cross-functional collaboration skills. BONUS POINTS IF YOU HAVE * Experience delivering solutions used by software developers (developer tooling or APIs) or similar technical personas. * An understanding of pub/sub and familiarity with distributed systems and event based architectures. WHAT’S IT LIKE TO WORK AT ABLY? We’re tackling planet-scale problems and our ambitions are a testament to that. You’ll join a successful, deeply motivated and collaborative team that thrives on innovation, experimentation and autonomy. To get a sense of life at Ably, visit our careers page. You can also read about the origins of Ably's core values on our blog. We believe in fostering a culture that's built on inclusivity and mutual respect among all team members, and we recognise that each individual is different and will want to be supported in their role in different ways. We provide a range of perks and benefits to aid folks' development and wellbeing, allowing them to be their best selves and do great work. * A remote-first and flexible work environment. UK-based teams come together in person once per month in our London hub (next to Old Street) and we get together as a company twice per year. Aside from that, you’re welcome to work wherever suits best for you. * Equity. We’re a growing start-up and we want all team to members to share in the success of the company through our EMI share options programme. * Enhanced holiday allowance. Our policy provides Ablyans with 28 days of paid annual leave (27 regular days, plus a day off to enjoy your birthday). * Enhanced parental leave package, so that you can take the time you need to get to know your new family member, rest and recover. * Home workstation budget of £500 on joining (and £150 p/a thereafter), so that your home office is set up to serve you well and that you have everything you need to work comfortably. * Personal learning and development budget of £1000 annually, and 5% L&D time during working hours to focus on improving your skillset. * Private healthcare with BUPA. * Medical cash plan to cover a range medical and dental costs. * Mental wellbeing coaching and counselling from Self Space. * Monthly wellbeing budget via Juno. * Life assurance and income protection. * Access to Tech & Cycle to Work schemes. * Weekly snack allowance for our end-of-week “Need To Know” meeting. * A fully-paid one-month sabbatical after five years with Ably. DIVERSITY, INCLUSION & BELONGING AT ABLY We believe our differences as individuals is what makes 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 creating long-term success as an organization. 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 that opportunity. If you enjoy working as part of a technology company, value open source, and love solving hard problems - then we’d love to hear from you, regardless of whether you fit the job description exactly or not. If in doubt, drop us an email; we’d be more than happy to give you some advice on your application.