Senior Compiler Engineer

About the Position Join our dynamic Tools and Compilers group at Jane Street as a research intern! We are seeking exceptional PhD and master's students who possess remarkable research experience in programming languages, compilers, verification, and related fields. At Jane Street, our Compilers team is dedicated to enhancing OCaml, a critical component of our expanding technology stack, in collaboration with the broader OCaml community. Our focus spans various facets of the compiler, with the goal of simplifying the process for developers to articulate their ideas in OCaml, boosting the performance of generated code, and optimizing the OCaml compiler itself for improved speed and usability. Over the years, we have enriched the type system, introduced innovative language features, and re-engineered the optimizer from the ground up, incorporating feedback-directed optimization. Additionally, we work on enhancing the surrounding toolchain, developing tools for profiling, debugging, documentation, and build automation. Much of our work is open-source, and we strive to contribute to the mainstream OCaml compiler as much as possible. During the application process, we will collaborate with you to identify a project that resonates with your research expertise and interests. Areas we are keen to explore include: Type systems that track locality and uniqueness Superoptimization Compiler testing and validation Throughout your internship, you will partner with mentors on a project for approximately 10-12 weeks. This experience will immerse you in our daily use of OCaml, providing exposure to the libraries and tools integral to our internal systems. You will gain insights into the diverse challenges we tackle every day and have the opportunity to apply cutting-edge research to an actively developed production codebase. Additionally, you will have access to our educational resources, attend guest speaker events, and participate in social gatherings, allowing you to experience what it's like to work at Jane Street full time.

About OLIXAt OLIX, we are at the forefront of a technological revolution. As AI technology evolves at an unprecedented rate, we face a significant infrastructure challenge. The old hardware paradigms are no longer sufficient to meet the skyrocketing demands of the industry. Our solution, the Optical Tensor Processing Unit (OTPU), is poised to redefine the standards of performance and energy efficiency, paving the way for the next century's economic advancements.The Role:We are seeking an Engineering Manager for our Frontend Compiler team. In this pivotal role, you will lead a dynamic group of six engineers, overseeing the frontend of our OTPU compiler stack. Your responsibilities will span from machine learning framework ingestion to MLIR-based intermediate representation (IR) design and its transformation. Collaborating closely with backend compiler teams, architecture, and customer integration teams, you will ensure that our frontend choices lead to a superior customer experience and optimal hardware performance.As an experienced engineering manager, you will harness your technical acumen and proven leadership skills to cultivate an exceptional team focused on achieving tangible customer and business outcomes. Your ability to foster tightly-knit collaboration across various disciplines will be crucial in driving our projects forward efficiently.

Lightning AI builds tools that help researchers and organizations bring AI projects from idea to production. Known for PyTorch Lightning, the team focuses on making it easier to develop, train, and deploy AI systems. Since merging with Voltage Park, Lightning AI combines developer-focused software with scalable compute resources. The platform supports experimentation, training, and production inference, while emphasizing security and control. Offices are located in London, New York City, San Francisco, and Seattle. Investors include Coatue, Index Ventures, Bain Capital Ventures, and Firstminute. Values Move Fast: Break big challenges into achievable tasks and act quickly. Focus: Work as one team to deliver well-crafted features, concentrating on a single goal at a time. Balance: Support healthy work habits and value rest for long-term results. Craftsmanship: Aim for excellence and innovation, paying close attention to detail. Minimal: Keep solutions simple and disciplined, avoiding unnecessary complexity. Role overview This hybrid Research Engineer position is based in London. The role centers on optimizing training and inference workloads on compute accelerators and clusters, with a focus on the Lightning Thunder compiler and the PyTorch Lightning ecosystem. Work will blend deep learning research, compiler development, and large-scale system optimization. The Research Engineer will help build foundational software that improves model performance and efficiency, shaping the future of machine learning infrastructure. This position reports directly to the Tech Lead and is part of the Engineering Team. Flexible work options are available.

Lindus Health is working to accelerate clinical trials so that new treatments reach patients faster. With a track record supporting over 100 trials and recent $55M Series B funding, the company is focused on practical improvements in healthcare delivery. As an AI Tools Developer based in London, this role centers on making Clinical Operations more efficient. The position works closely with Programme Operations, Clinical Operations, Product, and Engineering teams to identify manual bottlenecks and develop solutions that simplify day-to-day work. What you will do Collaborate with cross-functional teams to understand operational challenges. Design and build internal tools, systems, and workflows that automate or streamline manual processes. Develop practical solutions such as financial tracking tools, dashboards for site activation, and patient recruitment forecasting models. Apply AI-assisted development to create lightweight products for internal use. Focus on solving real-world problems rather than traditional software engineering projects. What to expect at Lindus Health Projects that directly impact patient outcomes, with visible results. Opportunities for ownership and recognition, team members can lead key initiatives. A supportive, collaborative team that values intelligence, motivation, and creativity. Lindus Health welcomes candidates who are eager to play a part in shaping the future of clinical trials.

About OLIXAt OLIX, we are at the forefront of technological advancement, tackling the infrastructure challenges posed by the rapid growth of AI. As the demand for powerful computing resources escalates, we are redefining the landscape of chip manufacturing. Our groundbreaking Optical Tensor Processing Unit (OTPU) delivers unmatched performance and energy efficiency, setting new standards for the industry and paving the way for the next economic revolution.The Role:We are seeking an Engineering Manager for our Backend Compiler team to spearhead a dynamic group of six engineers. This team will focus on developing and optimizing our OTPU compiler backend, collaborating closely with frontend compiler, architecture, and ASIC teams for agile hardware-software co-design. Your leadership will ensure that our hardware performance is maximized while meeting production-quality standards.The ideal candidate will possess extensive experience in engineering management, driving exceptional results for both customers and the business. You will leverage your technical acumen and proven ability to cultivate high-performing teams that thrive in a collaborative, fast-paced environment.

About OLIXAt OLIX, we are at the forefront of a technology revolution. The rapid growth of AI has unveiled a significant infrastructure gap, and traditional hardware designs are no longer sufficient to meet the soaring demand. Our innovative Optical Tensor Processing Unit (OTPU) is set to redefine the standards for performance and energy efficiency, paving the way for the future of computing.Role OverviewAs the Director of Software Engineering for Compiler & Architecture, you will lead a dynamic team focused on advancing our OTPU architecture. Your role will involve collaboration across various teams to translate technical innovations into tangible performance enhancements for our customers. We seek a visionary leader who possesses profound technical expertise and the ability to cultivate a high-performing engineering culture.Key ResponsibilitiesEstablish and communicate a clear vision for the Compiler and Architecture organization, overseeing all aspects of compiler development and performance modeling.Lead and develop a high-performing team, fostering a culture of ownership and accountability among managers and engineers.Define and uphold standards of technical excellence, establishing architectural principles and review processes that drive quality.Collaborate closely with hardware teams to shape ML inference strategies, making informed investment decisions on technology direction.Translate the company's strategic objectives into actionable priorities that enhance customer satisfaction and business success.Foster a productive and innovative work environment that balances speed and operational efficiency.

Join us at Q5 Partners as a Research Analyst Intern, where our internship program serves as the exclusive pathway to a graduate role within our organization. We offer these internships year-round, ensuring you have the opportunity to apply any time. This position is specifically for 2026 graduates, and we kindly ask you to indicate your availability on the application form.Renowned for our expertise in organizational change, Q5 Partners is dedicated to transforming businesses globally. We have structured ourselves to be agile, allowing us to adapt across various sectors and locations, delivering tailored results that meet our clients' unique requirements. We are excited to offer an 8-week internship for graduates within our Consulting team.Role Overview:Our comprehensive internship program is designed to immerse graduates in our business operations, focusing on three core areas: practice management, business development, and project delivery. Interns will gain insights into consultancy functions, learn the essential skills and behaviors expected of a consultant, and understand the methodologies and delivery styles we employ. Each Research Analyst will be paired with a dedicated mentor to guide them through their objectives and assess their progress.Main Objectives:Learn the fundamentals of Business Development, including pipeline principles, proposals, and client presentations.Develop business presentation and research skills.Gain an introduction to Organization Design principles and methodologies.Enhance business writing and analysis capabilities.Explore Organization Development principles and methodologies.Example Activities:Support Partners in various research projects.Collaborate with Consultants to develop innovative presentation tools.Assist in the preparation and customization of workshop materials, client toolkits, and templates.Observe the preparation and execution of sessions.Contribute to the creation of client deliverables.

Join Q5 Partners in London as a Research Analyst Intern for an 8-week program starting in August and October 2026! Be aware that interviews will commence after Easter 2026 and continue until all positions are filled, at which point we will notify all applicants of their status.Q5 Partners is a distinguished management consultancy dedicated to assisting organizations worldwide in crafting and executing transformative change. Our collaborative approach is rooted in creativity, clarity, and compassion, enabling us to tackle complex challenges across various sectors, including healthcare, retail, finance, and media. With offices in major cities like New York, Houston, Sydney, Melbourne, Oman, and Saudi Arabia, we cater to both private and public sector clients.Our expertise spans organization design, strategic alignment, cultural transformation, and more. We pride ourselves on being a consultancy that prioritizes people, enhancing not only business efficiency but also workplace culture.As a Research Analyst, you will immerse yourself in hands-on consulting experiences, collaborating with seasoned professionals on active client projects and internal initiatives. You will apply critical thinking and data analysis skills while utilizing Q5’s innovative tools to tackle intricate business challenges.This is a unique opportunity to elevate your consulting acumen at an organization celebrated for its values, people-centric focus, and cutting-edge transformation strategies.

Join our internship program to pave your way towards a graduate role with Q5 Partners. We offer flexible internship positions throughout the year, exclusively for graduates. Be sure to indicate your availability on the application form.At Q5 Partners, we are recognized leaders in organizational change, committed to enhancing businesses globally. Our nimble approach allows us to adapt across various sectors, delivering tailored results that meet the unique needs of our clients. We are excited to provide 8-week internships for graduates in our Consulting team.The purpose of this role is to immerse graduates in our business operations and the three pivotal areas of our work: practice management, business development, and project delivery. Interns will gain insights into the consultancy field, develop essential skills and behaviors expected of consultants, and learn our methodologies and delivery styles. Each Research Analyst will be paired with a dedicated mentor to guide them in reviewing objectives and tracking progress.Main Objectives: Introduction to Business Development, covering pipeline principles, proposal writing, and client presentations. Enhancement of business presentation and research skills. Foundational understanding of Organization Design: principles and methodologies. Development of business writing and analytical skills. Introduction to Organization Development: principles and methodologies. Example Activities: Assist Partners with various research initiatives. Support consultants in creating new presentation tools. Contribute to the preparation and customization of workshop materials, client toolkits, and templates. Observe the preparation and execution of sessions. Assist in generating client deliverables.

About the RoleJoin Woozle Research as an Associate Director in our dynamic London or Glasgow office. This pivotal leadership role is designed for seasoned professionals eager to influence high-caliber primary research utilized by leading hedge funds, private equity firms, and consultancies worldwide.Your key responsibilities include leading a team of Analysts and Associates, ensuring our deliverables consistently surpass client expectations, and nurturing lasting partnerships with investors and decision-makers.If you are passionate about guiding teams, enhancing client relationships, and delivering impactful market insights, we want to hear from you!

Be Part of the AI Revolution in the Creator Economy!Fanvue is a leading force in the global creator monetization landscape, empowering creators through an innovative, AI-driven platform. Our mission is to enable creators to directly engage and earn from their audiences at scale. With our recent Series A funding, Fanvue has achieved an impressive milestone of over $100M in annual recurring revenue and continues to experience explosive growth, supporting countless creators and millions of fans worldwide.As we expand, the integration of AI into our engineering practices is becoming essential, driving developer efficiency, feature deployment, and code quality while ensuring safe and responsible use across our codebase. Your RoleWe are seeking an AI Developer Tooling Engineer to spearhead the application of AI within Fanvue's engineering team. This hands-on position is pivotal in transforming AI into a powerful ally for our engineers while mitigating risks associated with its use.You'll be responsible for defining our AI coding framework, constructing the necessary infrastructure and tools, and enabling our team to enhance their development speed through parallel processes, AI assistance, and refined workflows—all while upholding our high standards for quality, security, and maintainability. Your ResponsibilitiesAlign Fanvue's codebase with cutting-edge AI coding tools like Cursor and Claude Code.Define, standardize, and implement Fanvue's AI-assisted development stack across IDEs, pull request workflows, and CI.Develop and manage MCP servers and AI-ready infrastructure to facilitate reliable, context-aware code generation.Enable parallelized development workflows, empowering engineers to confidently review and deploy AI-generated code.Establish best practices for AI-assisted coding, reviews, and refactoring within the team.Create and maintain comprehensive documentation, playbooks, and training materials to promote adoption and safe usage.Track and report tangible improvements in developer productivity, including PR cycle times, throughput, and code quality metrics.Continuously assess emerging AI developer tools and vendors, establishing clear success criteria and contingency measures. Your ProfileA solid background in software engineering, particularly with TypeScript in production environments.Experience with AI tools and cloud infrastructures is a significant advantage.Strong problem-solving skills and the ability to navigate complex technical challenges.Excellent communication skills, with the ability to convey technical information to non-technical stakeholders.

Marie Curie seeks an Associate Director of Internal Research Development based in London. This position shapes research initiatives that have a direct impact on patient care throughout the organization. Key responsibilities Oversee internal research development projects from initial concept through to completion Lead and coordinate teams from different departments, ensuring research efforts align with patient care priorities Use strategic thinking to move the organization’s research agenda forward Requirements Proven experience leading research projects in a collaborative and multidisciplinary environment Strong skills in strategic planning and project leadership Genuine interest in research focused on improving patient outcomes

About Mentis AIAt Mentis AI, we are pioneering the integration of artificial intelligence with human expertise to redefine industries. Our team is comprised of seasoned professionals from prestigious firms such as Lazard and Partners Group, and we operate across global markets from our key locations in London and San Francisco. We are dedicated to developing AI systems that deeply understand finance, healthcare, and law, collaborating closely with domain experts to enhance AI training.Your RoleThis internship is an exceptional opportunity, allowing you to work alongside our founding team and experienced finance experts. You will engage in meaningful projects that impact the way AI interprets financial markets. Your responsibilities will include:Developing Financial Models: Create DCF valuations, comparable company analyses, LBO models, and credit assessments to serve as training data for AI systems.Conducting In-Depth Financial Analysis: Analyze earnings reports, dissect financial statements, evaluate credit metrics, and produce high-quality research outputs that guide AI models in understanding finance professionals' reasoning.Creating Evaluation Frameworks: Design scoring rubrics and benchmarks to assess the AI’s ability to handle real-world finance scenarios, including merger analysis, debt structuring, and equity valuation.Establishing Annotation Guidelines: Convert complex finance workflows into structured labeling instructions for AI training.Testing AI Outputs: Critically evaluate model-generated financial analyses to identify potential errors in logic and methodology.Collaborating with ML Engineers: Work cross-functionally to refine prompts, enhance data quality, and boost model performance in finance-related tasks.We are a dynamic and agile team, seeking adaptable and enthusiastic individuals eager to contribute to our growth in various capacities.

JetBrains is seeking an AI Lead focused on Python tools. This position centers on advancing AI technologies across the company’s product suite, with the goal of improving both user experience and product capabilities. Role overview The AI Lead will guide the development and integration of AI features into JetBrains products. The role involves direct oversight of AI project initiatives and regular collaboration with teams from various disciplines. Expect to play a key part in shaping technical direction and ensuring that Python-powered solutions continue to set a high standard in the industry. What you will do Oversee AI-focused projects from conception through implementation Work closely with engineers, designers, and product managers to align AI features with product goals Drive innovation by applying Python expertise to create and refine AI solutions Locations This role is open to candidates based in Amsterdam, Belgrade, Berlin, Limassol, London, Madrid, Munich, Paphos, Prague, remote within Germany, Warsaw, and Yerevan.

Join our team as an Imaging Research and Development Associate on a one-year contract basis. In this pivotal role, you will provide invaluable support to our Clinical Project Management, Data Management, and Medical Leadership teams by delivering expert medical, scientific, and operational guidance for our Central Image Management Solution (CIMS) clinical trials. You will serve as a key point of contact, addressing issues related to central reading alongside both internal and external project teams. Your collaboration with stakeholders will involve document development, central reader training, quality monitoring, and analysis of image services and product offerings for CIMS clinical trials. Contribute to our department and the broader company in achieving strategic goals and objectives.

About Jump and Jump CryptoJump Trading Group is dedicated to pioneering research in the financial sector. We foster exceptional talents in Mathematics, Physics, and Computer Science, encouraging them to explore and push beyond scientific boundaries while applying groundbreaking research to global financial markets. Our culture promotes constant innovation through creativity, intellectual honesty, and a competitive spirit. We believe in collective success and unlocking individual potential through collaboration and mutual respect. At Jump, our research efforts lead to more than just superior risk-adjusted returns; we develop and implement technologies that transform our world, fund innovative startups, and collaborate with leading global research organizations and universities to tackle complex challenges.Jump Crypto, the dedicated crypto arm of Jump Trading Group, is focused on establishing vital infrastructure to support the growth of the cryptocurrency ecosystem. We are builders, partners, and traders with a long-term vision for the future of crypto. Since our humble beginnings as an intern project in late 2015, we have evolved into a high-performing team contributing significantly to major crypto communities.As a Campus Intern Researcher at Jump Crypto, you will collaborate with senior leaders and researchers to influence our strategic initiatives. This dynamic role allows you to explore macro-level trends, address intricate issues, compile insightful research reports, or guide our business development team on potential partnerships. Your expertise in the crypto industry, along with knowledge in computer science, distributed systems, consensus algorithms, networking, and game theory, will be instrumental in identifying and proposing new business initiatives. The ideal candidate will leverage their strengths to contribute meaningfully where they can add the most value.

Join gomotive as a Sales Development Intern and kickstart your career in the dynamic field of sales! This internship offers a unique opportunity to gain hands-on experience and contribute to our innovative sales strategies. You will work closely with our sales team, helping to identify potential clients and support our outreach efforts. If you're passionate about technology and eager to learn in a fast-paced environment, we want to hear from you!

About Man Group Man Group is a global investment management firm based in London, managing $227.6 billion* in assets across public and private markets. The company specializes in Systematic, Discretionary, and Solutions strategies, with a strong focus on alternative investments. Man Group plc is listed on the London Stock Exchange (EMG.LN) and is part of the FTSE 250 Index. For more information, visit www.man.com. *As of December 31, 2025 Team Overview The Quantitative Developer joins a technology group of over sixty professionals from eighteen nationalities. Team members have backgrounds in Computer Science, Mathematics, Physics, Engineering, and Classics. All share a strong interest in technology and high-quality code. Developers work in small, cross-functional teams that cover a range of engineering roles. Team rotations are common, helping individuals broaden their understanding of systems and find roles that match their interests. The team values enthusiasm for AI development tools and encourages their use to improve delivery speed. Technology Stack Most systems run on Linux. Python is the primary programming language, supported by scientific libraries such as numpy, scipy, pandas, and scikit-learn. For high data throughput, Java and C++ are used. The team also works with: Airflow for workflow management Kafka for data pipelines Bitbucket for source control Jenkins for continuous integration Grafana and Prometheus for metrics ELK stack for log management

Application Deadline: We are actively interviewing candidates and seek to fill this position promptly with a suitable applicant. THE OPPORTUNITYBecome a vital member of our groundbreaking AGI safety product team and play a key role in transforming intricate AI research into actionable tools aimed at minimizing AI-related risks. In your role as an applied researcher, you will collaborate closely with our CEO (who also acts as Head of Product), product engineers, and the Evals team’s software engineers to develop solutions that enhance AI agent safety for our clients. Currently, we are concentrating on the oversight of AI coding agents to identify failures in safety and security. You will be part of a compact team, which allows you to significantly influence both team dynamics and technological approaches while quickly assuming greater responsibilities. This position is perfect for you if you have a fervent desire to employ empirical research methodologies to enhance the safety of AI systems in practical applications. If you relish the challenge of converting theoretical AI risks into tangible detection mechanisms, thrive in fast-paced environments, and are eager to see your research make a meaningful impact on real-world AI safety, then we would love to hear from you.KEY RESPONSIBILITIESResearch & Development- Collect and catalog coding agent failure modes systematically from real-world instances, public examples, research literature, and theoretical predictions.- Design and execute experiments to evaluate monitor effectiveness across various failure modes and agent behaviors.- Develop and maintain evaluation frameworks to track advancements in monitoring capabilities.- Refine monitoring strategies based on empirical findings, optimizing detection accuracy alongside computational efficiency.- Stay updated with the latest research in AI safety, agent failures, and detection methodologies.- Keep abreast of advancements in coding security and safety vulnerabilities.Monitor Design & Optimization- Create a comprehensive library of monitoring prompts tailored to specific failure modes (e.g., security vulnerabilities, goal misalignment, deceptive behaviors).- Experiment with various reasoning strategies and output formats to enhance monitor reliability.- Design and evaluate hierarchical monitoring architectures and ensemble approaches.