Senior Fullstack Engineer - Commerce Platform

Join Spotify as a Senior Fullstack Engineer on our Commerce Platform team, where you'll play a critical role in shaping the future of our commerce solutions. You will collaborate with cross-functional teams to design, develop, and implement robust features that enhance user experience for millions. Your expertise will drive innovation and help us maintain our position as a leader in the music streaming industry.

Join Spotify as a Senior Fullstack Engineer and play a pivotal role in developing our innovative Data Platform. You will collaborate with cross-functional teams to design and implement robust solutions that enhance our data processing capabilities. This is an exciting opportunity to work with cutting-edge technologies in a dynamic environment.

Founded in 2018, Causaly is at the forefront of transforming enterprise-scale scientific research through our innovative AI platform. Our technology empowers researchers to efficiently discover, visualize, and interpret biomedical knowledge, streamlining critical research workflows to tackle some of the most pressing health challenges of our time.We partner with leading biopharma companies and institutions, focusing on diverse use cases including Drug Discovery, Safety, and Competitive Intelligence. Visit our blog to learn how we enhance knowledge acquisition and decision-making: Blog - CausalyCausaly is proudly backed by renowned venture capital firms, including ICONIQ, Index Ventures, Pentech, and Marathon.

Role Overview Legal & General is looking for a Senior Fullstack Software Engineer to help shape the future of our retirement services. This role focuses on designing and building software that supports and improves our products for customers in retirement. What You Will Do Develop and maintain software solutions across the stack to support retirement services Work closely with teams from different disciplines to deliver new features and improvements Contribute to technical decisions that raise the bar for quality and performance Focus on delivering reliable, maintainable code that enhances user experience Location This position is based in London.

Join Our Team at CapiCapi is revolutionizing the way businesses in emerging markets manage their international supplier payments—making it simple, swift, and equitable.With over $18M in support from leading investors including Creandum, Y Combinator, General Catalyst, and influential figures from Revolut, Checkout, Stripe, and Remitly, we are dedicated to establishing the robust financial infrastructure that emerging markets truly deserve.Our commitment to facilitating global trade empowers local enterprises to accelerate growth, create job opportunities, and enhance prosperity in their communities.Our mission is to uplift GDP in emerging markets by fostering a more equitable and accessible global financial system. We aim to streamline the payment processes for importers, enabling businesses to expand swiftly and act as catalysts for national prosperity.Our dynamic team of approximately 80 individuals, spread across 10 countries, embodies ambition and a results-driven mindset, striving to make a meaningful impact in the world. We are eager to welcome new talent to our team!Explore Capi's mission & values.Role OverviewAs a Senior Fullstack Engineer, you will be part of a compact, high-performing team of engineers and product leaders responsible for scaling our platform and amplifying our impact.From day one, you will collaborate closely with our founding team based in London and Paris, influencing the product vision and shaping the technical architecture of our solutions. This role is pivotal in developing technology that addresses customer challenges as we grow our offerings and enhance our footprint in emerging markets.Empathy and curiosity are essential to uncovering the root causes of problems, along with the creativity to devise solutions that harmonize impact, effort, and user satisfaction.Key ResponsibilitiesEngage in the product lifecycle from conception through to UI design, backend logic, deployment, feedback gathering, and performance measurement.Communicate effectively both internally and externally regarding new features, gathering feedback prior to implementation and articulating them upon launch.Determine and oversee delivery milestones, ensuring alignment between engineering and product priorities.

About the RoleJoin our dynamic Collection Engineering team as a Senior Fullstack Engineer, where you will play a pivotal role in enhancing Elliptic's efforts to combat crypto crime. You will be instrumental in developing a robust platform that empowers our intelligence organization to efficiently gather and analyze critical information, making the world safer.Your team’s mission is to amplify Elliptic’s intelligence collection capabilities by processing data from diverse sources, including external feeds, internal automation, and client submissions. This intel needs to be systematically classified, stored, and reviewed before being integrated into our proprietary graph database.Collaborate with a talented group of engineers and data scientists to create innovative tools, streamline processes, and eliminate obstacles in our intelligence pipelines.Key ResponsibilitiesDesign and implement software solutions that enhance our intelligence collection and analysis capabilities, including services on Kubernetes and browser extensions.Develop applications to analyze cryptocurrency behavior and trends across both the clear and dark web.Establish observability mechanisms to identify issues within your environments and execute necessary business processes for resolution.Mentor and coach fellow engineers to foster growth and implement best practices within the team.Actively contribute to defining and refining the engineering strategy for your team.Ideal Candidate ProfileDemonstrates a strong passion for cryptocurrencies and blockchains from both technical and economic perspectives.Possesses excellent coding skills in Typescript with a proven track record of delivering effective solutions.Has successfully integrated various systems to improve operational efficiency.Enjoys collaborating within a tight-knit team to tackle impactful challenges, contributing to a safer crypto ecosystem.Promotes a collaborative culture characterized by open communication, especially when addressing issues or concerns.Able to construct well-reasoned, data-driven arguments to influence key stakeholders effectively.

About Gigs Gigs builds a platform that lets tech companies add global mobile connectivity to their products. The goal: make integrating telecom as simple as integrating payments. By automating provisioning and removing telecom hurdles, Gigs helps businesses from fintechs to HR platforms offer mobile services without the usual complexity. The team numbers around 100 people, spread across the US and Europe. Gigs has raised close to $100 million from investors including Ribbit Capital, Google, and Y Combinator. The company brings together engineers and product leaders from places like Stripe, Airbnb, and Shopify, all focused on solving technical and regulatory challenges in telecommunications. Curiosity, creativity, and a drive to shape the future of telecom matter here. Gigs welcomes people who want to tackle tough problems and make an impact. Core Values Speed: Move quickly and deliver. Ambitious deadlines are the norm, and each week counts. Ownership: Spot a problem? Step up and fix it without waiting for approval. Customer Obsession: The success of customers is central to every decision. Ambiguity: Work often involves making decisions with incomplete information. Judgment and instinct matter. First Principles: Question assumptions and dig into the reasons behind how things are done. Role Overview: Senior Platform Engineer (London) This role sits at the heart of Gigs’ technical operations. Senior Platform Engineers design, build, and maintain the infrastructure and developer tools that power the company’s connectivity and payments platform. The work enables product teams to ship faster and more reliably, supporting growth at scale. The Foundation team owns the core systems every Gigs engineer depends on: CI/CD pipelines, cloud infrastructure, observability, deployment tools, and shared platform services. Taking on complex infrastructure challenges is a key part of the job, with a focus on keeping systems efficient and dependable.

Dataiku is at the forefront of AI innovation, providing an enterprise platform that facilitates the effective building, deployment, and governance of AI solutions. Our unified environment empowers teams to design and operate analytics, machine learning, and AI agents while ensuring transparency, collaboration, and control across the organization. With the ability to integrate seamlessly with data platforms, cloud infrastructure, and AI services, Dataiku connects the entire AI ecosystem, enabling organizations to leverage AI across multi-vendor environments with centralized governance.The world’s top companies trust Dataiku to operationalize AI, transforming it into a driving force for business performance and delivering tangible value. To learn more, visit the Dataiku blog, LinkedIn, X, and YouTube.Why Engineering at Dataiku?At Dataiku, we are committed to integrating cutting-edge data science technologies within our on-premise, cloud, or SaaS-deployed platform. Our technology stack showcases our dedication to quality and innovation. By incorporating the finest data and AI technologies, we select tools that genuinely enhance our product offerings. From the latest LLMs to our commitment to open-source communities, you will have the opportunity to work with a diverse range of technologies and contribute to the collective knowledge of global tech innovators. For more insights on engineering at Dataiku, click here.Explore our offerings: Dataiku's Key Capabilities; Dataiku's Github; and our Gallery, which showcases example projects (please note that editing is limited and will be reset regularly).Our flagship product, Dataiku DSS (Data Science Studio), is designed to streamline your data science workflow. To see it in action, check out our demo here.

Your ImpactAs a Senior Platform Engineer at DISCO, you will lead significant projects and play a pivotal role in the success of our engineering teams. Your expertise will inform long-term strategic planning, mentorship for senior engineers, and steer technical decisions across various teams or departments. Your focus will be on system design, implementation, and the ongoing maintenance and enhancement of DISCO’s distributed data platform.What You'll DoTechnical Leadership and Mentorship: Assume a leadership role in project teams, guiding engineers and influencing technical decisions, while innovating and solving complex organizational challenges.Performance Optimization: Design systems that emphasize high performance, scalability, and reliability.Ownership: Proactively identify and address potential issues within products and systems, creating actionable plans for resolution.Stakeholder Engagement: Collaborate closely with stakeholders including product managers, designers, developers, and executives to ensure architectural designs align with business needs and customer expectations.Software Development: Develop, maintain, and enhance sophisticated, scalable, high-performance data software solutions tailored for our big data platform at a petabyte scale, ensuring architectural excellence.Code Quality and Optimization: Commit to and enhance code quality through thorough review processes, optimization techniques, and adherence to industry best practices.Technical Problem Solving: Tackle intricate technical challenges with innovative problem-solving approaches.Collaboration and Communication: Work effectively within the engineering team and cross-functional teams, fostering collaboration with engineers, product managers, and stakeholders during project planning and execution.Continuous Learning and Adaptation: Stay abreast of the latest technological trends and advancements, continuously improving your skills and knowledge to contribute innovative ideas to the team.Technical Documentation: Generate and maintain comprehensive technical documentation to ensure clarity and accessibility of information.Data Platform Development: Construct and sustain robust and scalable data platforms to facilitate analytics, machine learning, and business intelligence.Data Integration and ETL: Design and optimize ETL (Extract, Transform, Load) processes, ensuring efficient data integration.

About UsAt Trainline, we are passionate about rail travel and committed to fostering a sustainable future for all travelers. Our platform empowers millions to discover and purchase the most cost-effective tickets across various carriers and journeys, utilizing our award-winning mobile app, website, and B2B partnerships.We have become Europe’s leading rail app, with over 125 million visits each month and £5.9 billion in annual ticket sales. Collaborating with over 270 rail and coach companies across 40+ countries, we strive to simplify travel while making it seamless, eco-friendly, and affordable.As a proud FTSE 250 company, our dynamic team of over 1,000 individuals from 50+ nationalities is spread across major cities including London, Paris, Barcelona, Milan, Edinburgh, and Madrid. With our sights set on expanding in the UK and Europe, now is an exciting time to join us on this exhilarating journey.Position Overview: Senior Engineering Manager, Core Experience - CommerceIn this pivotal role within the commerce sector of our Core Experience team, you will report directly to the Head of Engineering and oversee a team consisting of 2 Engineering Managers alongside several staff and principal engineers.As the Senior Engineering Manager, you will lead the Payment, Customer Identity and Access Management (CIAM), and E-commerce teams, ensuring the successful delivery of Objectives and Key Results (OKRs), maintaining Service Level Objectives (SLOs), and providing a cohesive technical vision across dependent teams and functions within the engineering organization.The ideal candidate will possess prior experience in managing other managers and demonstrate a strong track record in delivering intricate projects with considerable dependencies, along with domain expertise in Payment, E-commerce, and Customer Identity.Responsibilities:Guide multiple teams and their Engineering Managers, nurturing their professional development through effective coaching and performance management.Take ownership of the entire project lifecycle for your teams, ensuring timely and high-quality execution of deliverables.Collaborate closely with Product, Design, Data Science, and business stakeholders to align technical execution with business objectives.

Join us as a Senior AI FullStack Engineer at a rapidly expanding AI FinTech company, where your expertise will help shape the future of finance.About Us:We develop and deploy AI-powered tools and intelligent agents throughout their entire lifecycle, from conception to production.Our systems are designed with AI at their core, not as an afterthought.Transform experimental concepts into production-ready features that impact real users.Take ownership of projects from problem identification to user adoption.Collaborate closely with engineering and product teams to seamlessly integrate AI into daily operations.Establish effective methodologies for implementing AI in production environments.We are on a mission to create an AI-native bank tailored for ambitious businesses.Your Contribution:Train and refine large-scale audio and multimodal models.Design and execute experiments focused on architecture, data mixtures, and training strategies.Develop and enhance audio data pipelines.Optimize inference speed, latency, and overall production readiness.Deploy models in end-to-end, low-latency settings.Create meaningful evaluation metrics that go beyond standard benchmark scores.Work collaboratively with both research and engineering teams.This role is hands-on, bridging the gap between research and real-world application.Technical Environment:PythonLarge Language Models (LLMs) and AI toolsPostgreSQL, BigQueryTypeScript, ReactAWS, GCPDocker, Terraform, GitHub(Detailed technical stack will be shared during the interview process)Your Expertise:5+ years of experience in building and deploying production systems.Full-stack or deep backend/platform engineering skills.AI-native mindset: you leverage AI in your daily work and think in terms of agents, workflows, and automation.Product-focused: your priority is user adoption over mere output.You excel at transforming complex challenges into scalable solutions.Bonus Skills:Experience in financial technology.Familiarity with cloud services and infrastructure.Contributions to open-source projects.

Join Wayve as a Senior Fullstack Engineer focusing on data enrichment. In this pivotal role, you will collaborate with cross-functional teams to design, develop, and implement innovative solutions that enhance our data processing capabilities.You will leverage your expertise in both frontend and backend technologies to build robust applications while ensuring the highest standards of performance and security. Your contributions will directly impact the efficiency and effectiveness of our data-driven initiatives.

Join Our Team as a Senior/Staff Fullstack Software Engineer!Location: Fitzrovia, London (Hybrid – 4 days in-office, 1 day remote)About Wizeline:Wizeline is a pioneering global technology solutions provider that harnesses the power of AI to craft innovative digital products and platforms. Our partnerships with clients enable us to leverage data and AI to expedite market entry and catalyze business transformation. Within our vibrant community of innovators, we cultivate a culture that prioritizes growth, collaboration, and impact.At Wizeline, we believe that with the right people and ideas, there are no limits to our achievements.Are You the Right Fit?If you are excited about technology and innovation, we want to hear from you! We are seeking a Senior or Staff Fullstack Software Engineer to contribute to pivotal projects for our esteemed client in London. In this role, you will be responsible for developing scalable, high-performance services that power the next-generation financial platform, which includes applications for deal execution, invoicing, payment distribution, and financial reporting. You will play an essential role in architecting backend systems, integrating with external platforms, and delivering features that streamline complex revenue and transaction workflows throughout the organization.This position operates under a hybrid work model based in Fitzrovia (London), requiring four (4) days in-office and one (1) day remote.Key Responsibilities:Design and implement services to support revenue workflows, payment logic, and invoicing pipelines.Develop robust APIs and full-stack features, utilizing type-safe ORM tooling for schema management and query composition.Manage integration with internal systems (e.g., Salesforce, NetSuite) and external providers (e.g., banks, payment processors).Implement structured financial logic including contingent payments, commission calculations, and milestone-based billing.Incorporate AI/LLM capabilities using Claude (Anthropic) and utilize Cursor as a core development tool to enhance delivery speed.Build and deploy infrastructure in AWS.Translate complex business rules into deterministic backend logic including commissions, milestones, payee splits, and contingent payments.Implement robust data flows between Client Processing, Deal Management, and Authoritative Data domains.

Join Spotify's dynamic team as a Senior Backend Engineer focused on our innovative Commerce Platform. In this role, you will be instrumental in developing and optimizing backend solutions that drive our core commerce functionalities. Collaborate with cross-functional teams to enhance user experiences, improve system performance, and ensure robust scalability.

Join Vanta as a Senior Fullstack Engineer specializing in Vendor Risk Management, where you will play a pivotal role in enhancing our software solutions. You will collaborate with cross-functional teams to design, develop, and maintain robust applications that help our clients manage vendor risks effectively.Your expertise will contribute to improving our product functionality, ensuring high-quality code, and implementing best practices in software development. We are looking for a passionate engineer who thrives in a dynamic environment and is eager to tackle challenging problems.

Join Version 1 as a Senior Fullstack Developer, where you will be pivotal in shaping innovative digital solutions. As a member of our dynamic Digital, Data, and Cloud departments, you will collaborate with cross-functional teams to deliver high-quality software products that meet our clients' needs. Your expertise will guide the development of both front-end and back-end applications, ensuring seamless integration and excellent user experiences.

Join Us in Revolutionizing the Creator Economy with AIFanvue is a leading force in the rapidly evolving creator monetization landscape. Our AI-driven platform empowers creators to engage, connect, and earn directly from their audiences on a grand scale. Following our recent Series A funding, we have achieved over $100 million in annual recurring revenue, experiencing triple-digit growth year-over-year and supporting a vibrant community of hundreds of thousands of creators and millions of fans worldwide.As a Platform Engineer at Fanvue, your mission will be to streamline processes for our engineering teams. This role is pivotal in developing the infrastructure, tools, and foundational components that enable our product teams to deliver solutions swiftly, safely, and confidently at scale. Your ResponsibilitiesConstruct and uphold core platform infrastructure across diverse cloud environmentsEnhance CI/CD pipelines to facilitate rapid, secure, and consistent deploymentsDesign and implement observability, monitoring, and alert systems for platform servicesDevelop self-service tools and platform primitives that empower teams to operate independentlyCollaborate with product teams to assess infrastructure needs and eliminate obstaclesBoost reliability, scalability, and cost-effectiveness across core systemsManage incidents, perform post-incident analyses, and implement lasting solutionsContribute to the documentation, standards, and best practices for the platform Who You AreProven experience as a platform, infrastructure, or backend engineerProficient in working with cloud platforms and distributed systemsFamiliar with infrastructure as code, CI/CD systems, and monitoring toolsPossess a product-oriented mindset and a collaborative spirit

About UsYouLend is a dynamic and rapidly expanding FinTech company, recognized as the premier embedded financing platform for many leading e-commerce platforms, technology firms, and Payment Service Providers globally. Our innovative software platform empowers partners to enhance their value proposition by providing flexible financing products under their own branding to their merchant networks, all while mitigating capital risk.With backing from EQT, a top-tier Private Equity firm, we have achieved over 100% growth year-on-year since 2020. Headquartered in London, UK, we also operate across several European nations and the United States, serving notable partners including eBay, Amazon, Just Eat, Shopify, and Stripe.The RoleWe are looking for an experienced Senior Platform Engineer to join our Dev Enablement team. In this role, you will empower product engineers, enabling them to deliver high-quality code more swiftly and reliably. You will be responsible for building systems that enhance developer productivity, optimize CI/CD processes, and improve infrastructure efficiency, all while leading through technical excellence, collaboration, and mentorship.

Role Overview Legal & General is hiring a Senior Dynamics Platform Engineer in London. This role focuses on designing and building solutions using the Microsoft Dynamics platform. The position offers a chance to shape core systems and influence how technology supports the business. What You Will Do Design and develop solutions on Microsoft Dynamics Contribute to enhancements across the technology stack Drive improvements in system performance and security What We Look For Strong experience with Microsoft Dynamics Ability to deliver secure, high-performance solutions Collaborative approach and willingness to share expertise

Join Multiverse as a Senior Software Engineer specializing in Platform Engineering. In this pivotal role, you will leverage your expertise to design, build, and enhance our platform, ensuring it meets the highest standards of performance and reliability. Collaborate with cross-functional teams to deliver robust solutions that drive the success of our innovative programs.