Senior Staff Python Software Engineer jobs in London – Page 3 | RoboApply Jobs

Senior Staff Python Software Engineer jobs in London· Page 3

Results 41–60 of 4,097 for “Senior Staff Python Software Engineer” in London.

4,097 jobs found

41 - 60 of 4,097 Jobs
Apply
Multiverse logo
Full-time|On-site|London

Join Multiverse, the leading platform for upskilling in AI and technology adoption, where we are reshaping the workforce of tomorrow.With partnerships spanning over 1,500 companies, we offer transformative learning experiences that empower individuals at any stage of their career to master essential AI, data, and technology skills. Our learners have generate…

Feb 19, 2026
Apply
Samsara logo
Full-time|On-site|London, England, United Kingdom

Who We AreSamsara (NYSE: IOT) is at the forefront of the Connected Operations™ Cloud, a transformative platform that empowers organizations reliant on physical operations to capitalize on Internet of Things (IoT) data. Our mission is to enhance the safety, efficiency, and sustainability of the foundational sectors driving the global economy. Representing over 40% of global GDP, these industries—including agriculture, construction, field services, transportation, and manufacturing—are critical infrastructure, and we are excited to lead their digital transformation.Joining Samsara means you will play a vital role in defining the future of physical operations. You'll collaborate with a dynamic team focused on developing innovative product solutions such as Video-Based Safety, Vehicle Telematics, Apps and Driver Workflows, and Equipment Monitoring. As a recently public company, we provide the autonomy and support needed to make a significant impact as we build for the long term.About the Role:In this newly established Staff Software Engineer position, you will design the technical architecture necessary for global fleet sustainability, focusing on digitizing the vast transport and infrastructure sectors that support our world. Our goal goes beyond traditional cost-saving measures; we prioritize resource efficiency on a global scale.At Samsara, our Staff Engineers are proactive technical leaders who integrate high-level architectural strategies with a determined builder mindset. They operate with empowered autonomy, addressing the most complex challenges at the intersection of physical and digital operations.Unlike conventional architects, they maintain a close connection to the implementation, actively contributing to the codebase to foster rapid innovation and sustain development momentum. Their leadership serves as a force multiplier, elevating the technical capabilities of the team through insightful mentorship and pragmatic decision-making, ensuring that every line of code has a measurable impact on the world’s essential industries.In this role, you will spearhead the technical strategy for our Sustainability suite—transforming raw, inconsistent sensor signals into high-fidelity data for precise energy monitoring, and constructing the intricate global infrastructure necessary for fleet electrification.

Feb 3, 2026
Apply
Satispay logo
Full-time|On-site|UK, London

Please note: this position requires relocation to our Milan office.About SatispaySatispay is on a mission to transform everyday transactions, making payments straightforward, equitable, and accessible for all. We aspire to redefine the future of finance, empowering millions with a collective goal to address significant challenges. Our journey is just beginning.Joining our Core Team means engaging with essential systems that include managing relationships with external banks, orchestrating payments, and establishing the foundational infrastructure for Identity and Access Management. Our team also oversees risk management services, specifically credit risk evaluation and fraud detection.We value agility, bold thinking, and mutual trust, fostering an environment where challenging the status quo is encouraged, and continuous learning is a priority. If you seek more than just another job and wish to contribute to impactful projects alongside a skilled team, look no further.Key ResponsibilitiesAs a Staff Software Engineer within the Core Team, you will play a pivotal and strategic role in developing the backbone of our payment platform. You will work on mission-critical engines that empower Satispay, ensuring reliability, consistency, and security for millions of users.Daily tasks will include:Define Technical Strategy: Establish the long-term technical vision for critical domains, architecting complex subsystems that serve as the company's foundation, while balancing cross-product needs with speed and reliability.Architect Core Financial Systems: Design and scale high-throughput engines responsible for our transaction ledger, payment orchestration, and external bank integrations, ensuring accuracy and availability of our 'source of truth.'Own Identity & Security Infrastructure: Develop and maintain the base infrastructure for Identity and Access Management (IAM), including authentication and authorization layers that secure our users.Engineer Risk & Fraud Solutions: Create and enhance sophisticated services dedicated to credit risk management and fraud detection, implementing real-time protective logic for the company.

Feb 17, 2026
Apply
Ripple Labs Inc. logo
Full-time|On-site|London, UK

At Ripple, we are pioneering a transformative world where value transfers seamlessly, akin to the flow of information in today's digital landscape. Our vision is ambitious and impactful, and we are already making strides toward this goal. Through our innovative cryptocurrency solutions tailored for financial institutions, businesses, governments, and developers, we are enhancing the global financial ecosystem, fostering economic equity, and expanding opportunities for individuals across the globe. Join us to achieve remarkable professional growth and make a significant difference in the world of finance.If you are eager to witness your contributions in action and unlock exceptional career advancement opportunities, come aboard and help us create authentic value in the real world.The RoleAs a Staff Engineer specializing in Front End development, you will contribute to Palisade, Ripple's flagship wallet-as-a-service platform. This platform empowers businesses, fintech firms, and banks to create innovative digital asset treasury, payment, and exchange solutions.

Feb 27, 2026
Apply
OpenCoreOS logo
Full-time|On-site|London | New York City

About OpenCoreOSA High-Performance Ledger: We deliver an ultra-efficient ledger built on Go, Rust, and multi-region distributed databases, providing banks with a robust, adaptable, and open framework for development, rather than a restrictive monolithic structure.AI-Integrated Solutions: AI is not merely an enhancement; it's an integral aspect of our system architecture. We leverage AI to facilitate autonomous operations, create dynamic development workflows, and establish a self-optimizing platform.Reliability and Openness: Our focus is on achieving five-nines reliability and unwavering consistency, designed to support Tier-1 banks that handle hundreds of millions of transactions daily. By utilizing open technologies and forging new standards, we promote innovation without imposing lock-in constraints.Leadership with Proven Expertise: Our leadership team merges the strategic vision of former McKinsey banking, product, and engineering specialists with the real-world experience of a founder who developed and scaled a mission-critical fintech solution for the world's largest banks. This is complemented by insights from ex-global bank CIOs, providing us with an unmatched understanding of the evolving market landscape.Your RoleLedger Engine: Develop a deterministic, event-sourced transaction engine.Interest & Pricing Engine: Perform high-precision financial calculations.Reconciliation Engine: Ensure invariants, controls, and cross-ledger consistency.Operational Data Store (ODS): Manage a real-time operational data plane.Scalability Layer: Address concurrency, throughput, partitioning, and replication challenges.AI-Driven Development Experience: Work with MCP servers, agent workflows, and automated runbooks.Your Key ResponsibilitiesCreate initial MVPs for Tier-1 banks.Design distributed systems leveraging Go, Kafka, and distributed SQL databases.Manage systems throughout the entire SDLC (coding, testing, DevOps, infrastructure, product development).Implement advanced CI/CD practices and testing automation.

Nov 25, 2025
Apply
Toast, Inc. logo
Full-time|Hybrid|London, England, United Kingdom

This hybrid position is located in Dublin, Ireland, with full relocation support provided.At Toast, we pioneer technology that empowers restaurants and local businesses to thrive in the digital era. Our innovative solutions help business owners optimize operations, boost sales, engage customers effectively, and ensure employee satisfaction.What Drives UsHaving established ourselves as the premier hospitality platform in the U.S., Toast is now setting its global ambitions. As a member of our International team, you'll play a vital role in developing core systems to introduce Toast to new markets. Join a high-impact engineering team that tackles complex technical challenges in a dynamic environment. We seek leaders who combine technical excellence with a strong product vision to facilitate ongoing growth for our team and platform.Daily ResponsibilitiesLead intricate projects in a collaborative, cross-functional environment.Manage backend services to support internationalization across both restaurant software and cloud solutions.Design, build, deploy, and maintain resilient and scalable systems that are crucial to our customers’ success.Refine our technical approach to data management in alignment with our international strategy.Guide and mentor team members, leading technical discussions and fostering best engineering practices.Work closely with pilot customers, occasionally on-site, to ensure successful implementation and operations.Champion best coding practices, raising standards for yourself, your team, and the company.Utilize cutting-edge AI tools to enhance development workflows, increase productivity, and contribute to a culture of innovation.

Apr 8, 2026
Apply
Lawhive logo
Full-time|On-site|London

Exciting News! We're thrilled to announce that we've successfully raised $60 million in our Series B funding round, achieving a valuation of $685 million. Learn more about this significant milestone here. At Lawhive, our mission is clear: to democratize access to legal services for everyone. The legal landscape is often hindered by outdated technologies and practices, which is why we've fundamentally reimagined the model, leveraging our proprietary AI operating system as the foundation.As a regulated law firm, Lawhive integrates cutting-edge AI technology to enhance legal expertise and revolutionize the practice of law, delivering outstanding outcomes for both clients and legal professionals.Our innovation hub, Lawhive Labs, embodies this vision. Here, we unite elite engineers, designers, AI specialists, and legal experts from across the globe to shape the future of law.With the backing of prestigious investors like Google Ventures, Balderton Capital, and TQ Ventures, we are poised for international expansion following our recent funding success. Having launched in the US in 2025, we are only at the beginning of our journey.Engineering at LawhiveOur engineering team of 40 talented individuals is dedicated to architecting, developing, and maintaining Lawhive's platform, which is trusted by numerous legal professionals daily across the UK, US, and beyond.In the coming year, we are committed to addressing numerous challenges, particularly:Enhancing the user experience for AI interactions within legal practice, moving beyond conventional chat interfaces to pioneering new methods of human-machine engagement.Integrating modularity and international adaptability into our platform as we build the world’s first global consumer law firm.Our approach to legal services is holistic; we are not just developing software, we are an AI-driven law firm.

Oct 2, 2025
Apply
AlphaSense logo
Full-time|On-site|London, Greater London, England, United Kingdom

AlphaSense seeks a Senior or Staff Design Engineer based in London. This position centers on developing new solutions that advance the company’s products. Design decisions in this role have a direct impact on the features and quality that clients depend on. Key responsibilities Shape and build product features from concept through delivery Apply design expertise to influence product direction and quality What you bring Strong background in design engineering Experience building solutions that drive product improvement Ability to make design choices that enhance client experience

Apr 21, 2026
Apply
Wise logo
Full-time|On-site|London

Role overview Wise is looking for a Staff Software Engineer focused on Global KYC (Know Your Customer) and Onboarding. This position centers on designing and building software that improves how customers join Wise around the world. The work involves balancing regulatory compliance with a smooth onboarding experience.

Apr 16, 2026
Apply
G MASS logo
Contract|£100K/yr - £100K/yr|On-site|London, England, United Kingdom

Join G MASS as a Senior Software Engineer and play a pivotal role in supporting a prominent Investment Manager. This initial 6-month engagement places you within a core engineering team that operates in a dynamic, quantitative investment setting. You will be integral in enhancing the technology and data frameworks that power systematic trading strategies and cutting-edge research. Your contributions will enable investment teams to efficiently access, process, and leverage extensive market and research data in a fast-paced, analytics-driven environment.Key Responsibilities:Architect, develop, and refine large-scale data and infrastructure platforms that underpin trading and research activities.Establish and sustain systems designed to process vast amounts of data from a variety of global sources.Collaborate closely with researchers, traders, and fellow engineers to ensure seamless support for investment workflows.Enhance the scalability, performance, and reliability of distributed systems.Utilize Java and Python primarily in the development and maintenance of services.Engage with modern data and messaging technologies, including Kafka, ArcticDB, and MongoDB.

Mar 12, 2026
Apply
Axon logo
Full-time|Hybrid|London, England, United Kingdom

Become a Force for Good with Axon.At Axon, we are committed to the mission of Protecting Life. We tackle society's most urgent safety and justice challenges through our innovative devices and cloud-based software. Our collaborative spirit drives our success as we engage with diverse perspectives from our customers, communities, and each other.Working at Axon is fast-paced, fulfilling, and engaging. You will have the opportunity to take ownership and enact real change while growing in a mission-driven environment where your contributions are valued.Your ImpactAs a Senior Software Engineer within the Infrastructure Services team at Dedrone, you will be tasked with designing, building, and enhancing the core systems that support our developer platform and critical backend services. Your robust software engineering skills coupled with extensive infrastructure knowledge will ensure our platform remains scalable, reliable, and secure. This role transcends traditional infrastructure operations; you will create production-ready backend services, design cloud-native systems, and manage the CI/CD and runtime environments that underpin our product ecosystem. Your influence will shape engineering standards, enhance developer experiences, and steer architectural decisions across Dedrone’s product teams.What You’ll DoWork Location: This position is situated in our London office following a hybrid work model. We emphasize in-person collaboration, requiring team members to be on-site from Tuesday to Friday, with the flexibility for remote work on Mondays, unless a workplace accommodation is in place. We believe that connection drives innovation, and our in-office culture is crafted to promote meaningful teamwork, mentorship, and collective success.Reports to: Engineering Manager, Infrastructure ServicesBackend & Platform Service EngineeringDesign, construct, and sustain production-grade backend services (primarily using Java, Go, or Python) that facilitate deployment orchestration, internal APIs, and developer platform functionalities.Contribute to architectural decisions encompassing service boundaries, API design, persistence layers, scalability strategies, and fault tolerance.Enhance performance, reliability, and maintainability of platform services through rigorous testing practices and meticulous system design.Manage and evolve shared services governed by the Infrastructure Services team.CI/CD & Developer PlatformOwn, design, and refine CI/CD systems that support Dedrone’s distributed product ecosystem.

Apr 8, 2026
Apply
minderacraft logo
Contract|Hybrid|London, England, United Kingdom

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

Apr 24, 2026
Apply
Satispay logo
Full-time|On-site|UK, London

Please be aware that this position necessitates relocation to our Milan office.About SatispaySatispay aims to transform the landscape of everyday payments, making them straightforward, equitable, and available to all. Our vision extends further as we aspire to redefine the future of financial transactions. We are a vibrant community empowering millions, united by a common goal to address significant challenges. And this is just the beginning.We operate with agility, think innovatively, and foster an environment of trust where we can challenge conventions, continuously learning and evolving. If you are seeking more than just a job—if you desire to create something meaningful alongside a skilled team—you have found the right opportunity.Your ResponsibilitiesAs a Staff Software Engineer within the Consumer Wealth team, you will have a pivotal and strategic role in influencing how our users build and manage their savings and investments. You will serve as the primary technical authority for the Consumer domain, spearheading initiatives that enable millions to enhance their financial health through our savings products, invested money box, and investment solutions.Your daily responsibilities will include:Define Technical Strategy: Formulate the technical roadmap for the Consumer Wealth domain. You will design intricate subsystems that underlie savings and investment functionalities while considering cross-product impacts, leading effective initiatives that influence multiple teams.Enhance the Architecture: Create and develop scalable, high-performance systems that address complex financial engineering challenges, including the management and simplification of advanced back-end systems for savings and wealth management.Technical Thought Leadership: Establish cross-organizational partnerships to foster technical alignment, represent the technical vision to stakeholders, and remain at the forefront of emerging technology trends in FinTech and wealth management.Nurture Talent: Cultivate the next generation of technical leaders and promote a culture of excellence in engineering and continuous improvement.Create Impact: Play a crucial role in assisting users in expanding their wealth and achieving their financial aspirations through your contributions to the Consumer Wealth back-end architecture, directly supporting Satispay's mission.Prepare for challenges, collaboration, and the freedom to innovate. Our technology stack includes a variety of tools and technologies, providing you with ample opportunities for growth.

Feb 17, 2026
Apply
Squarepoint Capital logo
Python Software Developer

Squarepoint Capital

Full-time|On-site|London, Montreal, Singapore

Application Notice: Please apply only to the position that aligns most closely with your skills and experience. If our team believes you are better suited for a different role, we will contact you regarding that opportunity.Position Overview:At Squarepoint Capital, we leverage Python to develop essential software that addresses pivotal challenges daily. You will engage with a diverse array of systems that drive our trading success, including core tools and frameworks, data pipelines that support predictive models in research and trading, and software products utilized globally by traders and researchers.Your collaboration with seasoned software developers and quantitative researchers will contribute to the ongoing expansion of our investment business, tackling problems at scale, while also providing a unique opportunity to learn from some of the industry's most talented professionals.

Mar 10, 2026
Apply
The Trade Desk logo
Full-time|On-site|London

The Trade Desk is a leading global technology firm dedicated to fostering a better, more transparent internet through principled and intelligent advertising solutions. Our platform processes over 1 trillion queries daily, operating at an unparalleled scale. Moreover, we have cultivated a robust and valuable organizational culture centered on trust, ownership, empathy, and collaboration. We celebrate the diverse experiences and perspectives that each individual contributes to The Trade Desk, and we are committed to creating inclusive environments where everyone can express their authentic selves at work. Are you passionate about tackling complex challenges at scale? Do you want to be part of a dynamic, globally connected team where your efforts will significantly contribute to creating a better media ecosystem? Join us and discover why Fortune magazine consistently recognizes The Trade Desk as one of the best small to medium-sized workplaces worldwide. What we do: As Lead Staff Software Engineers, you will take ownership of end-to-end processes, engaging in all facets of designing, developing, and delivering data-centric products for our stakeholders.

Jan 28, 2026
Apply
Anthropic logo
Full-time|On-site|London, UK

About AnthropicAt Anthropic, we are dedicated to developing AI systems that are not only reliable and interpretable but also steerable. Our goal is to ensure that AI technologies are safe and beneficial for both our users and society at large. We are a rapidly expanding team of passionate researchers, engineers, policy experts, and business leaders collaborating to create positive and impactful AI solutions.About the RoleWe are on the lookout for talented and experienced Software Engineers to enhance our Continuous Integration (CI) team within the Developer Productivity organization. The CI team is tasked with maintaining the infrastructure that allows hundreds of engineers to deploy code to production efficiently and safely. Joining this team means you will play a crucial role in boosting the speed and reliability of Anthropic's research and product development.The CI team oversees Anthropic's comprehensive continuous integration system, which encompasses:CI Infrastructure: Designed to automate testing and ensure code quality across our rapidly growing monorepo.Test Infrastructure: Operates on Kubernetes across multiple cloud providers, facilitating intelligent test selection, execution, and reporting for a complex suite of tests.Merge Queue Management: Implements intricate branching strategies to uphold code quality at scale.CI Tooling and Automation: Focused on enhancing developer productivity and minimizing operational overhead.

Feb 13, 2026
Apply
HubSpot logo
Full-time|Hybrid|Flex - London, United Kingdom

POS-22139This position offers flexible work options: Office, Hybrid, or Remote within the UKAt HubSpot, we are dedicated to equipping businesses with state-of-the-art AI technologies, and our AI Infrastructure group plays a pivotal role in this mission. We are looking for a Staff Software Engineer who is passionate about infrastructure and improving the developer experience to join our dynamic AI Serving team. This team is responsible for managing HubSpot's end-to-end model inference and serving infrastructure, ensuring that AI models are deployed reliably, scaled appropriately, and remain cost-effective across various environments, while also serving as the cornerstone for modern Python development at HubSpot.The AI Serving team is in charge of the frameworks and libraries that facilitate synchronous, asynchronous, and offline inference, including model deployment pipelines, autoscaling, and resource management for both GPU and CPU. Our roadmap is focused on enhancing batch inference reliability and efficiency, advancing model observability, and optimizing AI infrastructure costs. Additionally, we are the custodians of essential Python libraries and tools within HubSpot.As a Staff Software Engineer on the AI Serving team, your responsibilities will include:Developing and deploying production-level code that directly enhances AI capabilities across HubSpot, serving as a crucial component for user and business impact at scale.Driving the advancement of our model serving and inference infrastructure, with an emphasis on reliability, scalability, and cost efficiency.Setting the technical direction for deploying and operating ML models at scale, influencing decisions on architecture, cost management, and developer experience.Collaborating closely with Machine Learning Engineers, Product Software Engineers, and other Infrastructure teams to streamline model deployment and serving processes.Gaining in-depth exposure to a variety of HubSpot infrastructure systems by building and maintaining core Python libraries, providing an excellent opportunity to understand HubSpot's operations in detail.Engaging with HubSpotters across the organization—from engineering and product to design, research, marketing, and sales—to gain insights into how HubSpot functions as a business.Being encouraged to bring your authentic self to work and to choose a work style and location that enables you to perform at your best, whether that be from home, in an office, or a combination of both.We are not solely seeking engineers with extensive experience; we are looking for individuals who have demonstrated unique excellence, leadership qualities, and the ability to uplift those around them.

Feb 12, 2026
Apply
OLIX logo
Full-time|On-site|London

About OLIXAt OLIX, we are at the forefront of the AI revolution, tackling the unprecedented demand for advanced computational capabilities. As the industry faces a significant infrastructure gap, we are redefining the hardware landscape with our revolutionary Optical Tensor Processing Unit (OTPU). This innovative technology promises unmatched performance and energy efficiency, setting the stage for the economic opportunities of the next century.Role OverviewJoin us as a Staff Engineer in Hardware Integration, where you will be the leading technical authority in your team, specializing in hardware-software integration across a critical segment of the OTPU stack. Your expertise will guide projects from pre-silicon design to post-silicon validation and sustainment engineering.We seek an experienced engineer who can set the technical vision for the team and tackle the most challenging engineering issues. Collaborating with the Engineering Manager, you will translate strategic priorities into actionable plans, drive technical decisions, and ensure the creation of reliable, maintainable solutions. Your hands-on expertise, sound engineering judgment, and influence through high-quality work will be pivotal to our success.Key ResponsibilitiesLead Technical Direction. Collaborate with the Engineering Manager to establish the technical focus for your team and take ownership of architectural decisions that influence the team's development and operational processes.Translate Priorities into Action. Partner with the Engineering Manager to decompose complex technical challenges into specific, implementable plans, ensuring the team is aligned on building effective solutions.Uphold Technical Excellence. Define the principles, interface agreements, and standards for the team—be it in firmware interfaces, ASIC validation methods, or interconnect fabric integration—ensuring consistent application across projects.Make Informed Technical Decisions. Own critical decision-making within your domain, which may include BSP and firmware architecture, ASIC validation approaches, or BMC platform design.Foster Team Alignment. Cultivate a shared understanding among engineers by ensuring clarity and rigor in technical discussions, facilitating well-reasoned decisions.

Apr 2, 2026
Apply
getscope logo
Full-time|On-site|London

Join our innovative team at getscope as a Senior Software Engineer. In this pivotal role, you will design, develop, and implement cutting-edge software solutions that will drive our projects forward. Collaborate with cross-functional teams to translate business needs into technical requirements while ensuring high quality and performance of applications.

Apr 9, 2026
Apply
Runna logo
Full-time|On-site|Runna London

Join Runna as a Senior Software Engineer II, where you'll play a pivotal role in enhancing our software solutions. You will collaborate with cross-functional teams to design, develop, and implement robust applications that meet our customers' needs. Your expertise will help us push the boundaries of technology, ensuring our products remain at the forefront of the industry.

Apr 9, 2026

Sign in to browse more jobs

Create account — see all 4,097 results

Tailoring 0 resumes

We'll move completed jobs to Ready to Apply automatically.