
Tessl · London
Tessl is a fast-growing Series A startup based in London, founded by Guy Podjarny. We’ve raised over $100M from world-class investors including Index Ventures, ...
Tessl is a fast-growing Series A startup based in London, founded by Guy Podjarny. We’ve raised over $100M from world-class
investors including Index Ventures, Accel, GV, and Boldstart, and in 2025 we were ranked #2 in Sifted EU’s B2B SaaS Rising 100 and
#20 in Sifted's AI 100.
At Tessl, we are building the context layer for AI coding agents, and a platform for AI-native software development. As an early
member of the team, you’ll help shape how we build, scale and support a company operating at the edge of AI and software
development.
We're hiring a Research Engineer to join our AI Research (AIR) team. You'll work on the components that make the outer loop real:
how agent harnesses orchestrate model behaviour, how we evaluate what's actually working, how pipelines turn production traces
into the next round of improvement, and how we diagnose the failure modes that matter to real users.
These aren't four separate workstreams — they're parts of one system, and we want people who see them that way.
We expect you to sit close to customers — joining calls, watching sessions, reading traces — and to let real workflows shape your
research priorities. You'll have meaningful autonomy and the resources to run substantial experiments where the bar for success is
shipped impact.
You'll report to our AI Research Lead, and collaborate closely with engineering, product, and design.
We're explicitly building coverage across four skill areas. You don't need to be strong in all of them — but you should bring
beyond a single agent session.
agentic systems.
shape what you work on.
which is appropriate.
to shipped improvement.
moved.
engineering.
In your first 3 months, you might have shipped a new eval suite for a real customer workflow, improved an agent harness based on
trace analysis, or built a pipeline that turns production failures into reusable test cases.
Competitive salary commensurate with experience. Health insurance extending to partners and dependents, pension contributions, and
the rest of what you'd expect.
Our office is a couple of minutes from King's Cross — pet friendly, with regular team lunches, drinks, and socials. We're hybrid,
with Monday, Tuesday, and Thursday as the primary in-office days.
We care deeply about the warm, inclusive environment we’re building at Tessl and we value diversity – we welcome applications from
those typically underrepresented in tech. If you like the sound of this role but are not totally sure whether you’re the right
person, do apply anyway!
CUBE are a global RegTech business defining and implementing the gold standard of regulatory intelligence for the financial services industry. We deliver our services through intuitive SaaS solutions, powered by AI, to simplify the complex and everchanging world of compliance for our clients. Why us? 🌍 CUBE is a globally recognized brand at the forefront of Regulatory Technology. Our industry-leading SaaS solutions are trusted by the world’s top financial institutions globally. 🚀 In 2024, we achieved over 50% growth, both organically and through two strategic acquisitions. We’re a fast-paced, high-performing team that thrives on pushing boundaries—continuously evolving our products, services, and operations. At CUBE, we don’t just keep up we stay ahead. 🌱 We believe our future is built by bold, ambitious individuals who are driven to make a real difference. Our “make it happen” culture empowers you to take ownership of your career and accelerate your personal and professional development from day one. 🌐 With over 700 CUBERs across 19 countries spanning EMEA, the Americas, and APAC, we operate as one team with a shared mission to transform regulatory compliance. Diversity, collaboration, and purpose are the heartbeat of our success. 💡 We were among the first to harness the power of AI in regulatory intelligence, and we continue to lead with our cutting-edge technology. At CUBE, You will work alongside some of the brightest minds in AI research and engineering in developing impactful solutions that are reshaping the world of regulatory compliance. Role Mission We're seeking an experienced Workplace IT Support Engineer to join our Workplace IT Support Team. Reporting to the Workplace IT Team Lead you'll deliver comprehensive M365, end-user compute, and workplace systems support to our global staff. This role combines hands-on technical support with some project delivery, managing the complete staff life-cycle, and acting as a key technical resource supporting Security Operations, Business Systems, and IT Procurement functions. This is an excellent opportunity for a self-motivated support professional to make a real impact in a fast-growing RegTech business serving global financial institutions. Key Responsibilities End User Support · 1st and 2nd line support for hardware, software, M365 and connectivity across UK and remote staff. · Manage and prioritise a personal ticket queue to SLA using Jira Service Management. · Troubleshoot Windows and macOS endpoints, mobile devices, and AV/conferencing equipment. · Support VPN, conditional access and remote access solutions. · Investigate and escalate complex infrastructure or security issues. M365 & Identity Administration · Administer Exchange Online, Teams, SharePoint, OneDrive and Intune. · Manage Entra ID — user accounts, groups, role assignments and licence allocation. · Configure Intune device enrolment, compliance policies and app deployment. · Support SSO, MFA and identity governance in line with CUBE security policy. · Manage M365 telephony configurations for staff in all regions. Staff Lifecycle (JML) · Execute end-to-end Joiner, Mover and Leaver processes — device provisioning, account creation/deactivation and access control. · Coordinate with HR to ensure timely, accurate onboarding and offboarding across all systems. · Maintain asset records and manage hardware shipping and recovery. Security & Compliance · Triage endpoint security alerts and coordinate remediation with the security team. · Maintain patching standards via PatchMyPC and Intune. · Support access reviews, RBAC reviews and ISO 27001 / SOC 2 compliance activities. Global Team & Projects · Active member of the global Workplace IT team, contributing to follow-the-sun coverage. · Participate in global IT projects — local delivery, testing and progress reporting. · Create and maintain knowledge base articles, runbooks and operational documentation. · Provide first-line support for key business applications (Salesforce, HiBob, Confluence, Jira). Experience & Knowledge Technical · 2+ years’ IT support experience (1st/2nd line) in a SaaS or technology organisation. · Hands-on knowledge of Microsoft 365 — Entra ID, Intune, Defender, Exchange Online, SharePoint and Teams. · Experience managing Windows 10/11 and macOS endpoints in an enterprise environment. · Familiarity with JIRA, Confluence and other Atlassian Suite components, ITSM Service Desks and Tooling and working to SLA targets · PowerShell or Python scripting for automation and familiar with AI automation methods and techniques. · Able to produce clear, accurate technical documentation and procedures. Professional · Self-managing — able to prioritise and execute independently. · Strong communicator; confident and professional with staff at all levels. · Organised, deadline-conscious and comfortable with competing priorities. · Exposure to IT operations frameworks: ITIL, ISO 27001 or SOC 2. Desirable · Microsoft certifications (e.g. MS-900, MS-102, MD-102, SC-900). · Experience supporting business applications (Salesforce, HiBob or similar SaaS platforms). · Knowledge of SSO, conditional access and identity governance concepts. Interested? If you are passionate about leveraging technology to transform regulatory compliance and meet the qualifications outlined above, we invite you to apply. Please submit your resume detailing your relevant experience and interest in CUBE. CUBE is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.
Tessl is a fast-growing Series A startup based in London, founded by Guy Podjarny. We’ve raised over $100M from world-class investors including Index Ventures, Accel, GV, and Boldstart, and in 2025 we were ranked #2 in Sifted EU’s B2B SaaS Rising 100 and #20 in Sifted's AI 100. At Tessl, we are building the context layer for AI coding agents, and a platform for AI-native software development. As an early member of the team, you’ll help shape how we build, scale and support a company operating at the edge of AI and software development. OVERVIEW OF ROLE Join our engineering team to build real-time AI Native workflows, tooling, and interfaces that will reshape how developers create and maintain software. As a Software Engineer, you’ll be versatile and independent, excited to work with cutting-edge AI tools to build great products. We move quickly, but with purpose - balancing speed with collaboration and thoughtful execution. You’ll collaborate closely with product, design, and the wider Engineering team to bring AI Native development to life in a fast-paced, high-trust environment. WHAT YOU’LL DO No two days will be the same at Tessl! You’ll have a high level of autonomy and be able to make decisions based on what you believe will help you deliver the most success. Here’s an insight into just a few of the things you would be doing: * Design and implement new functionality that you discussed and reviewed with the product team * Spin up a proof of concept to showcase an innovative idea you’ve been thinking about * Rapidly prototype a new language integration for our code generation pipeline, then develop a plan for a scalable implementation. * Pair with a designer to fine-tune interactions in the UI, CLI or existing AI coding agents, making the user experience more intuitive and slick * Integrate a third-party service, e.g. for notifications, so we can focus our own cycles on Tessl’s core capabilities * Collaborate with other teams to plan an architecture that supports collaboration across the platform * Establish an end-to-end testing strategy to increase our confidence when deploying new features to production * Share your technical vision for a new product capability you’ll be leading with the wider engineering team for feedback and alignment WHAT WE’RE LOOKING FOR ESSENTIAL * Proven experience (typically 5+ years or equivalent) as a Software Engineer. You care about code modularity, structure and aesthetics and have firsthand experience in how software is built across teams and environments * Equally comfortable contributing to a mature codebase with strict CI criteria or hacking up a quick prototype to prove/disprove an assumption * Proven experience leveraging the best AI coding tools and agents to accelerate and enhance your own work and efficiency * Comfortable with fast-paced, high-autonomy environments: you’ve ideally thrived in an early-stage startup before * You have demonstrated usage of AI tools in your day-to-day work, and be excited about experimenting, learning, and harnessing the potential of new AI tools and approaches to transform software engineering NICE TO HAVE * Background in AI products or developer tools * Experience in rapid prototyping environments * Programming polyglot experienced in several languages of different paradigms (e.g.: JavaScript/TypeScript, Python, C or C++, Haskell, etc.) * Experience collaborating with AI researchers and bridging between research-focused and engineering-focused teams * Experience building & scaling REST APIs, particularly those conforming to JSON:API * Comfortable working on infrastructure (e.g., setting up CI pipelines, navigating Kubernetes) * If you have a personal or open-source project you’d like to share, we’d love to see it (GitHub links welcome!) SALARY AND BENEFITS Office: Our brand new 10,000 sq. ft office is in the AI hub of Kings Cross, London. We have generous catering and have regular social events such as team lunches, drinks and more. We require all staff to be in our London HQ at least 3 days a week on our anchor days of Monday, Tuesday and Thursday. Salary: We offer a competitive salary based on experience and skills, benchmarked against industry standards. Benefits: 25 days holiday, health insurance, including dental and vision, which extends to partners and dependents, as well as a company-matched pension. We also provide a commuting stipend for those who live outside London, and a cycle to work scheme. APPLICATION PROCESS Here’s an outline of what you can expect during our interview process: 1. Introductory Call 2. Take-Home Exercise 3. On-site Technical Session 4. Culture Conversation 5. Leadership Discussion Throughout the process, if you have any specific requirements or need adjustments, please let us know: we’re happy to accommodate. We care deeply about the warm, inclusive environment we’re building at Tessl and we value diversity – we welcome applications from those typically underrepresented in tech. If you like the sound of this role but are not totally sure whether you’re the right person, do apply anyway! LEARN HOW WE THINK AND WORK * On Tessl, The AI Native Development Startup * Announcing skills on Tessl: the package manager for agent skills * Podcast Episode: The End of Fragmented Agent Context, Guy Podjarny Tessl CEO
Tessl is a fast-growing Series A startup based in London, founded by Guy Podjarny. We’ve raised over $100M from world-class investors including Index Ventures, Accel, GV, and Boldstart, and in 2025 we were ranked #2 in Sifted EU’s B2B SaaS Rising 100 and #20 in Sifted's AI 100. At Tessl, we are building the context layer for AI coding agents, and a platform for AI-native software development. As an early member of the team, you’ll help shape how we build, scale and support a company operating at the edge of AI and software development. About the role Tessl is building the foundational infrastructure for how developers work with AI agents: the systems, standards, and tooling that make agent-assisted software development reliable, repeatable, and trustworthy at scale. We are a small team working on a genuinely new class of problem, and design is central to how we solve it. We are looking for a Member of Design Staff who brings real craft and genuine curiosity. You will work closely with product managers, engineers, and researchers to shape how developers interact with technically complex systems and workflows. This is not execution work within a settled product. The patterns are still forming, and the person we hire will have a direct hand in shaping them. We also expect this person to be building a genuinely AI-native design practice: using the best available tools to move faster, think more clearly, and raise the quality of our work. We are not looking for someone who uses AI occasionally. We want someone who is actively developing how they work with it. What you will work on * Design clear, usable interfaces across core product surfaces and developer workflows, balancing simplicity with the depth and configurability that expert users need. * Translate nuanced system concepts into experiences that feel considered rather than overwhelming, grounding design decisions in real user behaviour and research. * Run user research with developers and engineers, turning genuine observations into well-reasoned, specific design decisions. * Collaborate daily with product managers and engineers throughout the full cycle of work: contributing early, iterating often, and treating designs as living documents rather than fixed deliverables. You are comfortable taking the lead on design direction while staying responsive to how the product evolves around you. * Contribute to a growing design system, bringing visual rigour and coherence to shared foundations that will hold up as the product and team scale. * Develop an AI-native design process: use current tools across research, prototyping, and visual production, share what you learn with the team, and raise the bar for how design work gets done. What we are looking for * Experience: 3 to 5 years of experience in product design, or equivalent, with a portfolio showing end-to-end ownership of real, shipped work. Strong visual design sensibility evident throughout. * Technical fluency: A track record of designing for technically sophisticated users. You do not need to be an engineer, but you should be genuinely curious about how the systems you design for actually work. * Tools and working practice: Strong proficiency in Figma, including component architecture and design system contribution. Comfort using AI tools as a serious part of your workflow, from research through to production. Familiarity with tools such as Dovetail is a plus. * Collaboration: You work well in a fast-moving environment where priorities can shift and process is still forming. You are confident enough to take the lead on design direction and bring a clear point of view, but equally comfortable running with an idea that comes from elsewhere in the team. You know the difference between holding your ground on something that matters and being flexible when the situation calls for it. Daily collaboration with engineers and product managers is the norm here, not the exception. * Domain experience: Prior experience in developer tools, productivity software, or AI/ML applications. You understand what it means to design for expert users. We do not have all the answers yet. This is a role where you will help define new patterns, work at the edge of what is known, and shape how design is practised at a company that is still figuring things out in the best possible way. If that kind of challenge excites you, and you feel you would be a strong fit even if you do not meet every criterion listed, we would encourage you to apply. APPLICATION PROCESS Here’s an outline of what you can expect during our interview process: 1. Introductory call 2. Portfolio Review with Designer(s) 3. Case study / White boarding 4. Meet with Head of Product 5. Leadership discussion We care deeply about the warm, inclusive environment we’re building at Tessl and we value diversity – we welcome applications from those typically underrepresented in tech. If you like the sound of this role but are not totally sure whether you’re the right person, do apply anyway! LEARN HOW WE THINK AND WORK * On Tessl, The AI Native Development Startup * Announcing skills on Tessl: the package manager for agent skills * Podcast Episode: The End of Fragmented Agent Context, Guy Podjarny Tessl CEO