
Smarkets · London
We are always on the lookout for talented engineers. Please read the full description below to find out more. We welcome applications from candidates who are re...
We are always on the lookout for talented engineers. Please read the full description below to find out more. We welcome
applications from candidates who are really energised about the challenges we are working on and have transferable skills and
experience. We look forward to reviewing your application!
We are hiring for different levels (mid and senior).
Smarkets runs one of the world’s most sophisticated prediction markets, handling over £29 billion in volume since 2010 and
engaging 200,000+ traders globally. We’re a technology company that happens to revolutionise betting - from sports to political
markets, to delivering the sharpest prices and the fairest odds.
Our stack is designed for scale, reliability, and speed: Linux, Kafka, Postgres, Kubernetes, with Python 3, Rust, C++17, and React
powering our platform. We build infrastructure that institutions trust while keeping trading accessible to everyone. Our edge?
We’ve thrived through every market cycle, competitor, and industry revolution.
At the heart of our success are our people. We create a high-performance environment where exceptional talent can thrive, blending
deep business experience with a commercial mindset to drive strategic growth.
If you’re ready to help shape the future of prediction markets with cutting-edge technology and a customer-first philosophy,
Smarkets is where you belong.
As a Mid-Level Software Engineer within our Engineering org, you will play a pivotal role in designing, developing, and
maintaining the services that power Smarkets' business operations products. You will collaborate closely with engineering
managers, technical leadership, and product managers to lead complex technical projects aligned with the Smarkets product roadmap.
Smarkets is looking for talented and passionate engineers like you for an exciting opportunity to create a unified and
high-performing system that will not only optimize our services but also elevate Smarkets to new heights of success.
We believe in using the best tools for the job. We support two programming languages - a fast compiled language (Rust) for
critical path operations and a slower interpreted one (Python) for other tasks. Our Kafka pub/sub MQ, the heart of our system,
offers high availability, low latency, and message persistence. We provide gRPC and HTTP APIs for various metadata, while
PostgreSQL and ElasticSearch serve as our go-to databases.
horizon and your mind on the present
documentation workflows.
Our values are at the heart of everything we do - guiding how we work, collaborate, and innovate. They reflect what we expect of
ourselves and each other to deliver the best results, while fostering a positive, high-performing environment:
Culture Fit: These values define how we succeed as a team. If this isn’t you, this may not be the right place. We hire people who
thrive in a fast-paced, collaborative, and ambitious environment.
We offer a competitive salary and benefits package, alongside a dynamic, collaborative environment where your work truly makes an
impact and your voice is heard. Our team is diverse, driven, and ambitious - united by a strong work ethic and a hunger to
innovate and win.
Our benefits are designed around Health, Wealth, and Development, supporting you both professionally and personally.
soft drinks, because great work starts with great food.
We aim to have a simple and speedy hiring process, and we want to make sure that we are right for you as much as the other way
around.
We’re an equal opportunities employer and celebrate diversity in all its forms. If you need any adjustments during the recruitment
process, please let us know — we’re happy to accommodate your needs.
ABOUT US Legora is redefining how legal work gets done. Not built for lawyers, built with them. We work alongside the world’s best legal teams, who expect excellence, precision, and speed, and we hold ourselves to the same bar. Our AI-native workspace lets legal professionals move faster, think more clearly, and operate with sharper precision. By analysing thousands of documents in minutes and powering end-to-end workflows, we cut through complexity, teams can focus on what matters: judgment, strategy, and outcomes. 1,000+ customers across 50+ countries trust us, including Cleary Gottlieb, Goodwin, Linklaters, White & Case, Dentons, and Barclays. We’ve scaled to $100M+ in ARR, with teams across Europe, North America and APAC, and continue to expand through acquisitions including Qura, Walter AI and Graceview. We partner with world-class performers: including Aaron Judge and the New York Yankees, Ludvig Åberg (and his caddie), and campaigns featuring Jude Law. Joining Legora means three things. * We lean in: ownership over titles, outcomes over intentions. * We fight for excellence: high standards, direct, ego-free feedback. * We grow together: as a team and with our customers. Mission before ego. Everyone contributes. No one coasts. If you’re driven by impact, pace, and raising the bar. This is the place. The role As a Software Engineer at Legora you will build, review and ship amazing products helping legal professionals all over the world in their day-to-day job. You’ll get the chance to work across the entire tech stack with clear ownership and autonomy. What you will be doing: * Architect and implement features end-to-end for our web platform * Take ownership of our codebase, balancing high-quality code, security and speed of development * Work with technologies such as React, Node.js, AWS, Azure and Kubernetes * Review code and mentor junior colleagues to support them in their development, making the team even better! * Drive continuous improvement and challenge us, the industry and yourself Who you are * A passionate engineer with a several years of experience building great products using cutting-edge technologies * You feel comfortable working across the entire tech stack, with focus on backend development * You’re autonomous and take pride in the code you write * You’re a problem solver who’s not afraid to come up with creative solutions and think holistically about software architecture * Experience in infrastructure and integrations are a big plus Legora is an Equal Opportunity Employer At Legora, we believe great teams are built on diversity of thought and experience. We’re proud to be an equal opportunity employer and committed to creating an inclusive, high-performance culture where everyone can do their best work. We welcome people of all backgrounds and don’t discriminate based on race, color, religion, national origin, gender, gender identity or expression, sexual orientation, age, disability, veteran status, or any other characteristic protected by law.
ABOUT US At Axle Energy, we’re building the infrastructure that will underpin the decarbonised energy system. Our software moves energy usage to times when electricity is cheap and green, by controlling vehicle charging, heating systems, and home batteries. We control hundreds of thousands of energy assets. We’re building in a legacy industry and moving gigawatt-hours of electrons in the real world, but we operate at lightning speed, and we’re growing the team to meet customer demand. We’re proud to be supported by world-leading investors, including Accel. Read more about what we’re building here. ABOUT THE ROLE Software Engineers at Axle build the core infrastructure for connecting to distributed energy devices, orchestrating them, and allowing them to participate in electricity markets. This is a generalist Software Engineering role, encompassing product-engineering, devops, and data engineering. We encourage engineers to own as much of the problem-space as they can: you’ll spend time talking to clients, getting feedback from users, and working closely with market operators. At Axle, we work in a deliberately flat structure. That means fewer layers, faster decisions, and more ownership for everyone. SOFTWARE ENGINEERING AT AXLE LOOKS LIKE * Forming a deep understanding of the domain & the business, so you have enough context to execute independently at speed * Focusing on outcomes, not process, and taking ownership for the end product you ship into the world * Managing your own time and those of others to adapt to changing scope and deadlines, delivering 80% of the value in 20% of the time TECH STACK 🐍 We build in Python + React for the frontend 🐋 Everything we build lives in Docker, for minimal cross-platform faff and maximal reproducibility. 🤖 Unlimited Claude Code tokens - we are aggressive users and explorers of AI, and encourage everybody to reconsider their workflows regularly ☁️ We deploy on GCP WHAT'S IN IT FOR YOU A meaningful slice of equity in Axle, alongside a competitive salary, with total compensation ranging from £75k–£200k (base salary + equity). We operate with a deliberately flat structure and aim to keep pay equitable across the company, with a 1:1 median ratio between founder and team compensation. Enhanced parental leave to support you through life's meaningful moments. Bi-annual retreats to strengthen team connection & shared purpose. Hybrid working - We have a dog-friendly office around Farringdon. To maximize collaboration, we ask that you spend 2-3 days a week in the office. The opportunity to directly shape the future of energy markets and accelerate the transition to a low-carbon world. We are extremely keen to build a diverse company, and we’re particularly eager to hear from candidates who don't fit the traditional role stereotypes. If you’re motivated by our mission, please do reach out, even if you feel you might not ‘check all the boxes’. INTERVIEW PROCESS 1. Initial interview 2. Remote pair programming 3. Final interview (in-person) 4. Offer, references, and welcome to the team!
ABOUT DELFA Billions of people still suffer from every-day diseases. One key reason? Clinical trials are broken. Despite $120 billion spent each year, most trials are delayed due to bottlenecks like patient recruitment. Delfa is fixing this with autonomous AI agents. We're building AI agents to automate clinical trials. In less than a year from launch we’ve already: * Deployed onto 300+ trials across multiple conditions * Reached seven figures in ARR, growing 25% MoM * Raised an oversubscribed $3.8m seed from tier-one AI investors WHAT YOU'LL DO You'll build and scale the core systems that enable Delfa's AI agents to deliver real-world clinical impact. * Design, build, and scale AI agent systems end-to-end: from voice interactions to intelligent workflow orchestration across trial sites * Own complex projects from architecture to deployment, with real autonomy over technical decisions * Build and evolve the infrastructure, observability, and monitoring systems needed to ensure quality and reliability at scale * Integrate leading-edge models from AI labs into production workflows, evaluating and adopting new capabilities as the frontier moves * Design robust data pipelines for ingesting, transforming, and serving high-quality healthcare data * Continuously improve internal AI tooling and platform to unlock new use cases and increase team velocity Our current tech stack: FastAPI · Pydantic · TypeScript · React · OpenAI / Anthropic · Temporal · PostgreSQL · Honeycomb · PlanetScale · Azure YOU'LL BE A GREAT FIT IF… * You have 3+ years of professional full-stack engineering experience: We're looking for somebody comfortable with solving hard technical problems, refactoring when needed, and knowing what's enough and what's too much to solve a problem. * A track record of building high-quality products fast: Delfa's got big ambitions to materially accelerate getting life saving treatments to market. This is necessary and urgent work so we need individuals who can deliver. * An ownership mindset: We position our team to understand customer problems, give you the autonomy to find the best path forward, and expect you to own the solutions. * A growth mindset: We're looking for people who take pride in their work and are always looking to improve it. If your work doesn't matter to you, it won't end up mattering to our customers. If you're not growing, your impact won't grow either. LIFE AT DELFA Delfa is building a generational company to transform the way medications reach millions of patients in need. This is your opportunity to get in on the ground floor and work alongside the highest talent density team in the space, onsite at our London office 5 days a week: * A wine-snob who built foundation models at Roche at ETH Zurich * A former hedge fund trader with world class causal AI knowledge * A medical doctor turned AI engineer who builds prototypes on the weekend for fun * A ginger bloke who deployed production AI for J&J, Medtronic, and Exscientia WHAT WE OFFER * Competitive salary + meaningful equity * Private health insurance and gym membership * 25 days’ holiday + UK public holidays * Modern office space 5 mins from Old Street station * True 0 → 1 ownership. You’ll take full responsibility for critical product features that get new treatments to patients, faster. OUR HIRING PROCESS We work to get you an offer within a week with the following lean process: 1. Intro chat with Gustav (CTO) - 30 mins: An informal discussion about your experiences, values, and career goals, and give you an opportunity to get a sense of the role and the team. After this call we may ask you to share some work you’re proud of. 2. Coding Challenge - 90 mins: No artificial interview questions. Instead, you will work through a real-world challenge similar to problems we solve every day. You are welcome to use AI tools. We believe great engineers should know how to solve problems effectively, including with AI. 3. System Design Challenge - 90 mins: We will invite you to our office to spend time with us in person. Together, we will work through a real-world system design problem. This is the best opportunity for you to see what it would be like to work with us, and for us to understand how you think and collaborate. 4. Offer. If all the above goes well then you’ll receive an offer from us! If helping unstick clinical trials and getting life-saving treatments to patients faster sounds like your idea of important work, let’s talk.