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Join Squarepoint Capital as a Quantitative Developer specializing in High Performance Computing with expertise in Python. In this pivotal role, you will contribute to the development and optimization of advanced quantitative models, leveraging your technical skills to enhance performance in a fast-paced environment. Your work will directly influence trading strategies and investment decisions, making a significant impact on the firm's success.
Squarepoint Capital is a global investment management firm specializing in quantitative strategies. Our team of talented professionals is committed to leveraging advanced technology and data-driven insights to deliver superior investment performance. Join us in a dynamic environment where innovation is encouraged, and collaboration is key.
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Landytech is dedicated to transforming how investment managers, asset owners, and their advisors access essential asset information. Utilizing Sesame, our cutting-edge investment reporting platform, we empower clients across more than 15 countries to make well-informed investment choices and gain insights more swiftly.As a rapidly growing company, we are thr…
Join Nevis: Pioneering AI Wealth ManagementAt Nevis, we're on a mission to revolutionize wealth management through cutting-edge AI technology. Our innovative platform is designed to empower financial advisors, enabling them to enhance client relationships while our AI automates time-consuming workflows. As we build the future of wealth management, we have secured $40 million in funding from top-tier investors including Sequoia Capital, ICONIQ, and Ribbit, and are led by a talented team of ex-Revolut executives.Your Impact as a Software Engineer (Python)We are seeking a talented Software Engineer (Python) who is passionate about developing robust AI-driven platforms. In this key role, you will design and implement Python-based systems and services that drive intelligent workflows for leading financial firms. You will work on applied AI, data pipelines, model execution frameworks, and backend components that support our innovative AI products.If you thrive in a fast-paced environment, love creating production-grade AI solutions, and are eager to see your ideas come to life quickly, Nevis is the place for you. You'll join a world-class engineering team dedicated to building scalable AI systems.Your ResponsibilitiesDesign and enhance Nevis’ Python-based AI platform, enabling core workflows and agentic automation.Develop model orchestration, data processing pipelines, and execution runtimes for our applied AI features.Create scalable APIs and services that facilitate rapid development and deployment of AI systems.Architect systems for model inference, prompt execution, and multi-step agent reasoning.Maintain high engineering standards through clean code practices and CI/CD workflows.Collaborate with AI engineers, product managers, and designers to deliver impactful features used by thousands.Take ownership of greenfield AI platform components, from architecture to production.Engage in design and code reviews that shape Nevis’ technical future.
Location: Hybrid in central London (3 days onsite per week) Contract Type: Contract Role overview minderacraft seeks a Senior Python Engineer to support the scaling and enhancement of the AI Stylist, a live AI-powered recommendation system for web and mobile users. As the product enters a rapid growth phase, the team faces a substantial backlog of features and improvements. This contract role sits within the Recommendations team, focusing on integrating advanced AI capabilities and blending conversational interfaces with recommendation logic. The work directly affects the quality, relevance, and reliability of a customer-facing system in production. What you will do Develop and refine AI-driven services using Python Design and implement evaluation frameworks for large language model (LLM) systems Enhance output quality through structured evaluations, beyond just code changes Apply techniques such as LLM-as-a-Judge to assess recommendations and responses Manage and iterate on non-deterministic systems, using real-world performance data Integrate AI features into a broader platform and API ecosystem Contribute to production readiness, focusing on reliability, observability, and performance metrics Collaborate closely with data scientists on prompt engineering, model selection, and evaluation strategies Requirements Core experience Strong Python engineering background in production environments Experience building AI-enabled applications, especially recommendation or conversational systems Direct experience with evaluation frameworks for LLM or AI systems Understanding of how AI systems differ from traditional deterministic software Ability to design effective evaluations and drive ongoing system improvement Track record of collaborating in cross-functional teams with engineering, data, and product stakeholders Nice to have Familiarity with Azure AI services or similar platforms Knowledge of OpenAI or comparable SDKs Exposure to infrastructure and distributed systems Experience with tools like Terraform or Kafka Benefits Competitive day rate
Role overview Wise is hiring a Data Platform Engineer focused on the Database Platform, working primarily with Python. This role centers on improving data processes, maintaining strong performance, and supporting scalable solutions. The work involves close collaboration with teams across the business to deliver reliable and efficient data systems. What you will do Optimize and streamline data workflows for better performance and scalability Work with cross-functional teams to implement effective data solutions Contribute technical expertise to improve Wise’s data architecture Location This position is based in London.
G-mass is collaborating with a distinguished global financial institution to find a seasoned Transaction Reporting Change & Release Lead. This individual will be responsible for managing the complete lifecycle of UK/EU transaction reporting changes, from regulatory interpretation to controlled production deployment.This is a hybrid role that combines the responsibilities of a Technical Business Analyst with hands-on SQL and development tasks. You will serve as a vital link between Compliance, Operations, Risk, and Technology, converting regulatory requirements into actionable change specifications, overseeing release delivery, and enhancing production controls. A key goal is to minimize reliance on key personnel by standardizing documentation, runbooks, knowledge transfer, and repeatable release processes.Please note that this role requires presence in the client’s London office (specific days to be confirmed).Key ResponsibilitiesChange, Release & GovernanceManage the full lifecycle of UK/EU transaction reporting changes, including regulatory interpretation, impact assessment, prioritization, build/test coordination, and production deployment.Oversee reporting logic changes across various platforms and upstream systems, leading release planning, prioritization, and timelines in accordance with regulatory and business deadlines.Ensure compliance with formal governance and approval processes (e.g., CAB, go/no-go decisions), with meticulous evidence capture and audit trails.Act as the primary liaison across Compliance, COO, Technology, Operations, Risk, and external ARMs/vendors.Technology & ProcessesCollaborate with developers and architects to gain a comprehensive understanding of transaction reporting infrastructure, data flows, dependencies, and the existing build/test/release processes.Convert regulatory and business requirements into clear, actionable deliverables such as requirements, functional specifications, rules, validation logic, and acceptance criteria.Enhance documentation and knowledge sharing to reduce key person dependency and improve cross-functional understanding of reporting systems and logic.Assist in designing and implementing more robust, scalable, and repeatable release processes for reporting changes.Transaction Reporting Subject Matter Expert (SME)Serve as an SME on UK/EU reporting requirements, including ARMs, reportable fields, and validation rules, translating regulatory texts into practical rules and specifications.Provide insights on regulatory interpretation, including ESMA Q&As and ARM feedback, ensuring alignment of reporting logic with current obligations.Specify technical change requirements across fields, mappings, validations, and exception handling.Testing, Release, Controls & Defect ManagementDefine and execute end-to-end testing and release strategies...
Role overview Legal & General seeks a Full-Stack Engineer to build and maintain scalable web applications. This position centers on Python and TypeScript, with a strong emphasis on teamwork and collaboration. Engineers in this group play a key part in projects that drive the company's digital growth. What you will do Develop and maintain web applications using Python and TypeScript Work alongside cross-functional teams to deliver software solutions Support active projects and contribute ideas for new initiatives Location This position is based in London.
Hudson River Trading (HRT)
The Systems Development team at Wehrtyou is integral to our mission, building and maintaining a robust platform that supports all Systems teams. As a Senior Software Engineer specializing in Security, you will leverage your expertise in Python and Go to create innovative solutions to complex security challenges. Your role will involve enhancing and integrating our existing tools and libraries across the platform, as well as designing and developing new tools to streamline trading, research, installation, and monitoring processes, ensuring they are secure and reliable.This position presents a unique opportunity to significantly influence a critical aspect of our expanding infrastructure. A typical day may include:Developing and maintaining automated tools and software features for secure machine provisioning, monitoring, metrics collection, maintenance, secrets management, and network configuration.Diagnosing and resolving software bugs across a fleet of Linux machines, tackling issues at the application, network, operating system, and kernel levels.Crafting configuration management scripts to build, deploy, and sustain new services.Contributing to setting the strategic direction for the Systems Python platform.Collaborating with HRT’s engineering teams to devise solutions to various security challenges.
Axle Energy
About Axle Energy Axle Energy builds software to help decarbonize the energy system and fight climate change. Our team develops infrastructure that optimizes energy use, making sure it happens when electricity is both cleaner and more affordable. The platform manages vehicle charging, heating systems, and home batteries. Machine learning helps us predict when and how much energy is needed. Today, we oversee tens of thousands of distributed energy assets and continue to grow quickly. Read more about our work here. Role Overview This Software Engineer position focuses on building and maintaining the core infrastructure that links and coordinates distributed energy devices, so they can participate in electricity markets. The role blends product engineering, devops, and data engineering. Engineers at Axle have broad ownership, often communicating directly with clients and market operators to collect feedback and improve outcomes. The company has a flat structure, which supports quick decisions and gives every team member a strong sense of ownership. What You Will Do Build a strong understanding of the energy domain and business needs to work effectively and independently. Prioritize delivering results and taking full responsibility for the products you develop. Adapt to changing priorities and deadlines, focusing on delivering the majority of value in a fraction of the time. Technology Stack Backend: Python is the main language, supporting close collaboration between data scientists and engineers for rapid development. Prototyping: Figma is used to design and test ideas quickly before building them out. Location This role is based in London.
Apollo Research
Application Deadline: We are actively interviewing and looking to fill this position promptly with the right candidate. EXCITING OPPORTUNITYBecome a pivotal member of our newly established AGI Safety Product Team at Apollo Research. In this Full Stack Engineer role, you will collaborate directly with our CEO, who also serves as Head of Product, alongside other talented product engineers and the Evals team to craft tools that enhance AI agent safety at scale for our users. Your contributions will help develop innovative products that monitor AI coding agents for safety and security risks. Joining our small, dynamic team means you'll have substantial influence over both team dynamics and technological direction, with opportunities to quickly take on greater responsibilities.This position is perfect for you if you are passionate about creating products that genuinely enhance AI safety, thrive in fast-paced environments, and enjoy collaborative work with researchers.PRIMARY RESPONSIBILITIESProduct Development- Work alongside the team lead to clarify tool specifications, translating them into robust technical architectures.- Engineer and sustain features across the entire stack, from responsive front-end interfaces (using React) to scalable backend services in Python.- Produce clean, well-documented, and maintainable code that adheres to our rigorous standards for security and performance, while engaging with users to capture their use cases and requirements.Back-End Development- Design and build scalable backend services capable of processing and analyzing extensive AI agent logs.- Develop RESTful APIs and data processing pipelines for AI agent logs.- Create secure API endpoints to facilitate the integration of our tools into customer workflows.- Establish monitoring and logging systems to ensure optimal reliability and performance.Front-End Development- Construct intuitive user interfaces that empower customers to comprehend and act on AI agent safety and security evaluations.- Create interactive data visualizations that effectively convey complex AI behaviors.
examplecorpsandbox
Join our dynamic App Platform team as a Senior .Net Developer where you will play a pivotal role in system architecture, software development, and infrastructure consulting. Collaborate with server teams, contribute to open-source projects, and share insights through presentations and blog posts. Your expertise will help shape scalable, high-traffic web applications and enhance our technological landscape for long-term stability.
Version 1
Join our dynamic team at Version 1 as a .NET Developer, where you will play a pivotal role in designing, developing, and maintaining innovative software solutions. We are looking for talented individuals who are passionate about technology and eager to work on exciting projects that make a difference.Your responsibilities will include collaborating with cross-functional teams to deliver high-quality software, conducting code reviews, and implementing best practices in software development. You will have the opportunity to grow your skills in a supportive environment, working on cutting-edge technologies.
Toast, Inc.
Join our innovative team at Toast, Inc. as an Intranet Technical Developer. In this role, you will leverage your technical skills to enhance our internal communication systems, ensuring seamless collaboration across departments. Your expertise will play a crucial part in optimizing user experience and driving efficiency within our organization.
Upbeat Ideas UK Ltd
Join our innovative team at Upbeat Ideas UK Ltd as a Senior Ruby Developer. We are looking for an experienced developer who is passionate about building high-quality applications using Ruby on Rails. You will play a crucial role in designing, developing, and maintaining scalable web applications that enhance user experience and drive business success.The ideal candidate will have a strong background in software development, a knack for problem-solving, and the ability to work collaboratively in a dynamic environment.
Konrad Group
About Us At Konrad Group, we are a pioneering digital consultancy committed to addressing intricate business challenges faced by our global clientele. Our culture thrives on innovation, and we take pride in creating best-in-class digital products that are utilized by millions of consumers worldwide. We seek highly intelligent, analytical, and diligent individuals who are passionate about continuous learning. Role Overview As an iOS Developer, you will engage in the development of iOS applications, collaborating closely with our accomplished software development team. Your role will involve contributing to both consumer and enterprise applications, making it a perfect fit for developers who are confident in their technical skills and eager to be part of a dynamic and continuously evolving team at Konrad. Your Responsibilities Develop maintainable, testable, and high-performance software in conjunction with our exceptional team. Engage in code reviews and conduct thorough testing to guarantee the delivery of top-quality software. Investigate new technologies and tools, sharing insights with the team. Communicate effectively with all team members to facilitate collaboration. Requirements Proven experience in building iOS applications using Swift. Strong understanding of essential programming and computer science concepts. Comprehensive knowledge of the end-to-end mobile application development process, including server-side interactions. Solid grasp of core mobile principles such as UI implementation, common development frameworks, and REST APIs. Familiarity with common architectural patterns like MVVM, MVP, and MVC. Excellent interpersonal skills, as teamwork and communication are key to our success. A proactive mindset with a strong desire to produce outstanding work. A passion for enhancing software development workflows and processes. Preferred Qualifications Familiarity with functional reactive programming and ReactiveX frameworks is advantageous. Experience with Objective-C. Knowledge of modern networking approaches, such as GraphQL. Additional mobile development experience, including Android development with Java or Kotlin, or cross-platform development using React Native, Flutter, Ionic, Xamarin, or Cordova.
Checkout.com
About Checkout.com Checkout.com builds digital payment solutions for businesses worldwide. From our London headquarters, we support clients such as eBay, ASOS, Klarna, Uber Eats, and Sony, helping them process billions of transactions each year. Our platform aims to remove friction from payments and help partners grow. With 19 offices across six continents, our team brings together a wide range of perspectives and expertise. We focus on driving change in fintech and shaping the future of payments. Lead Mobile Developer Role The Lead Mobile Developer will guide the development of Checkout.com's flagship mobile app. This role covers hands-on coding, setting technical direction, and shaping the app’s architecture. The goal: deliver a high-performance, user-focused experience that scales. This position calls for a mobile specialist who can influence technology choices and component strategies. Strong experience building mobile-first consumer applications is essential. Key Responsibilities Design and implement the first version of our mobile app using React Native, with room to adapt the tech stack as needed. Make key architectural decisions on navigation, state management, animations, and performance to support scalability and maintainability. Champion mobile user experience and performance, deciding when to use React Native or native development approaches. Work closely with backend and product teams to deliver seamless, end-to-end experiences. Define core engineering practices for mobile, covering coding standards, CI/CD, testing, and monitoring. Learn more about us at Checkout.com.
Version 1
Version 1 seeks a Senior Java Developer to join teams working on client applications across digital transformation projects. This position offers the chance to influence how organizations use technology, contributing to solutions that address practical business needs. Key responsibilities Design and develop Java applications in collaboration with cross-functional teams Take part in code reviews, helping maintain code quality and share expertise Mentor junior developers, guiding their technical and professional growth Work on projects that directly impact client operations and outcomes Locations London Birmingham Manchester Newcastle upon Tyne Edinburgh Belfast
Join Ansatz Capital as a Research Engineer, where you will engage in the innovative research, testing, and deployment of cutting-edge trading strategies. You will also play a critical role in designing and constructing the research infrastructure that enables the evaluation of various trading concepts.We seek candidates who are deeply passionate about strategy development, with a strong aptitude for quantitative problem-solving and a keen interest in uncovering and capitalizing on statistical patterns within the financial markets. Proficiency in Python is essential, as you will be responsible for implementing your insights effectively.Ideal candidates will possess robust software implementation skills and have a track record of developing high-performance code alongside user-friendly tools. Your ability to deliver functional software solutions rapidly and accurately will significantly enhance our quantitative research capabilities and broaden our trading strategy coverage.Our compensation package includes a competitive base salary, a discretionary performance bonus, and opportunities for participation in long-term incentive schemes.
Are you an experienced Laravel developer with a passion for crafting robust backend systems? If so, we would love to connect with you! Join the Trybe team as a Senior Backend Developer and play a pivotal role in our mission to deliver exceptional software solutions in the industry. About Trybe:Trybe is a forward-thinking startup dedicated to providing innovative cloud-based software to clients in the hotel, spa, and wellness sectors. Our goal is to transform both guest experiences and back-of-house operations. Founded in 2020, we are proud to partner with leading spa and leisure operators globally. We foster a high-performance, collaborative team culture, welcoming talented individuals who thrive in a dynamic startup environment as we continue to expand.Key Responsibilities:Develop and maintain the Trybe Laravel backend, which powers our entire platform.Create APIs for frontend engineers, facilitate integrations with partners, and manage data processing jobs.Write extensive tests using Pest to ensure top-quality code delivery.Collaborate closely with engineering and customer experience teams to implement innovative features that meet client needs.Contribute ideas throughout the product development cycle to enhance feature quality.Who We Are Looking For:A minimum of 5 years of commercial experience with Laravel.A strong passion for technology and problem-solving.Ability to write clean, maintainable, and thoroughly tested code.A self-motivated learner who thrives in a fast-paced environment.Excellent communication skills and a collaborative team player.Experience handling large datasets, as we process millions of bookings annually.Proficient in building efficient RESTful APIs.Bonus Skills:Familiarity with MongoDB and Eloquent.Experience using Elasticsearch for data aggregation and reporting.
Join Us at IntropicAt Intropic, we're pioneering the future of financial intelligence, merging deep market expertise with cutting-edge AI technology. Established in the financial hub of Canary Wharf, London, our mission is to distill complex data into clarity, precision, and actionable insights. Our culture is driven by values of truth-seeking, speed, and ownership, which shape our approach to building, learning, and collaboration. We prioritize integrity, impact, and a fast-paced environment where curiosity is not just welcomed, but vital. If you are eager for challenges, inspired by innovation, and ready to elevate your intelligence alongside a team of extraordinary minds, Intropic is the place where your ideas can flourish.Who We Are Looking ForAs a thriving fintech start-up with a proven range of products, we are now on a mission to create the next groundbreaking solution. We seek individuals who excel in tackling open-ended challenges across various disciplines. Our engineers engage in more than just standard tasks; your role may involve debugging Python, deploying infrastructure updates, engaging with product early adopters, and strategizing with team leaders. We value individuals over resumes; if this sounds like you, we would be excited to connect!
Join Our Team as a Senior React.js Developer in London!We are seeking a talented and experienced Senior React.js Developer to be part of our innovative team at Difrent, a leading arts provider located in the vibrant hub of London. In this role, you will engage in exciting projects from inception to completion, ensuring they are both technically sound and visually stunning.As a key contributor, you will craft elegant code and collaborate closely with clients on various agile projects, working alongside a multidisciplinary digital team to deliver top-notch products.
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Browse all companies, explore by city & role, or SEO search pages. View directory listings: all jobs, search results, or location & role pages.
