Senior Backend Product Engineer - London, UK

Join V7 LabsAt V7 Labs, we're revolutionizing the AI landscape by creating platforms that empower individuals to achieve peak performance with unmatched efficiency. Our goal is to convert human expertise into reliable AI, streamlining complex processes to be quicker, smarter, and more precise. We are experiencing rapid growth, supported by top investors and AI visionaries, including the creators behind Transformers and Gemini.Your RoleAs a Product Engineer, you will contribute to V7 Go, a platform designed to equip legal, finance, insurance, and accounting sectors with a customizable no-code AI agent toolkit. This tool focuses on harnessing multi-modal data to produce verifiable outputs while ensuring transparency in AI logic for accuracy and compliance.V7 Go integrates the latest models, including GPT-5, Claude 4.1, and Gemini 2.5, ensuring optimal accuracy and performance. Check out the V7 Go keynote for more insights into our innovative solutions.Team Dynamics and ImpactYou will report directly to Chris, our Engineering Manager, and collaborate within the Go Engineering team.Working alongside a dedicated team of up to 7 professionals, you will take on significant responsibilities encompassing coding, testing, planning, and analysis.You will have the autonomy to establish your own objectives, strategies, and metrics, emphasizing impactful outcomes rather than mere task completion.We value proactive engineers who take ownership of their work, demonstrating initiative in problem-solving and collaboration.Your Day-to-Day ResponsibilitiesFacilitating the application of foundational models to scale multi-modal data.Enhancing our platform to effectively manage complex multi-tenant usage patterns.Developing a comprehensive suite of APIs to support both our internal systems and customer-facing products.Delivering production-ready updates multiple times daily, collaborating closely with Product and Design teams to address customer needs.Candidate ProfileExperience in functional programming is essential. Familiarity with Elixir is advantageous, but languages such as Scala, GoLang, Node.js, Haskell, Clojure, and F# are also welcomed.Strong problem-solving skills and a proactive attitude towards challenges.

About AlaroAt Alaro, we are revolutionizing the legal industry with cutting-edge AI-driven solutions. As an AI-native law firm, we leverage advanced technology and data from the ground up.The legal sector, valued at a trillion dollars globally, often relies on outdated practices that hinder efficiency. Our mission is to utilize AI not as a replacement for legal judgment but as a transformative force that reshapes operational models. We envision a future where firms embracing this shift will lead the way in delivering exceptional legal services, while those that resist will struggle to meet evolving client expectations.Founded in April 2025, Alaro has successfully raised $2M in pre-seed funding followed by a $7M seed round led by a prestigious US venture capital firm. Our innovative product is actively utilized by our legal team in real cases, fostering a dynamic feedback loop between product development and legal practice. With a growing base of early users and a stellar engineering team, we invite you to join us on this exciting journey.Our Work CultureAgile and Adaptive: We prioritize delivering early to empower lawyers while continuously refining our offerings. We believe in progress, but quality remains paramount.Empowered Ownership: You're entrusted with managing your schedule and are accountable for your contributions, ensuring seamless operations even when challenges arise.Ingrained AI Utilization: AI is an integral part of our processes, influencing both our codebase and workflows to enhance collaboration between humans and AI agents.Globally Remote: Our team is distributed worldwide, with robust alignment through regular meetings and in-person gatherings when necessary.Our OfferingsEquity and Compensation: We provide a competitive salary along with meaningful equity, ensuring you have a significant impact from your first day.Collaborative Environment: Work closely with founders and a talented team of senior engineers to shape our systems and company culture as we grow.Advanced AI Tools: We offer an unlimited budget for AI coding agents and tools, encouraging their effective use in our development processes.Annual Team Retreat: We unite the entire team once a year for an offsite in Mallorca, and we frequently gather in our offices for collaborative planning sessions.

Your Role at AccuRx as a Senior Product Engineer...Join us in creating innovative software solutions that empower GP practices, hospitals, and care homes across the UK. We're tackling one of the most significant challenges in healthcare communication at a national scale.Our current technology stack includes C# (.NET Core), Kubernetes, SQL, React, TypeScript, ES6, and Redux—though we embrace change and continuous learning. As a Senior Product Engineer, you will play a pivotal role in shaping how our technology evolves as our product and organization expand.Daily Responsibilities:Take ownership of developing and refining core product functionalities from inception to production, including ongoing enhancements.Participate in user research sessions with patients and healthcare professionals to gain deep insights into their needs before proposing solutions.Work closely with product managers and designers to guide product direction, design, and technical strategy.Design and implement complex features that deliver significant impact while ensuring speed, quality, and sustainable maintenance.Maintain ownership of the services you develop, ensuring reliability, performance, and continuous improvement in production environments.Drive technical product decisions as part of a collaborative, cross-functional product team.Serve as a hands-on senior individual contributor while providing mentorship to junior engineers on your team.Ideal Candidates Will Have:Demonstrated success as a Senior Backend Engineer or Senior Product Engineer.Experience with C# (.NET Core) is preferred, but candidates with Java experience who are eager to learn C# are also welcome!Experience in a user-centric business environment, preferably in healthcare or related sectors.

At Plain, we are revolutionizing customer support for the modern B2B landscape. Our aim is to develop the most rapid and powerful platform, enabling companies to transcend traditional reactive support and foster genuine customer relationships.Renowned companies such as Cursor, Raycast, and Granola trust Plain to consolidate their customer interactions, enhance team collaboration, and elevate their workflows through the integration of AI.The B2B customer support sector is experiencing a monumental transformation, with AI redefining customer engagement. Support is evolving from a siloed function to a collaborative effort across platforms like Slack, Discord, and other communication channels. The outdated methods of slow, manual, and fragmented processes are no longer viable.This position offers a hybrid work model, requiring 3 days a week in our London office.Key ResponsibilitiesWorking at Plain involves more than just managing tasks; it encompasses owning and addressing challenges comprehensively—from infrastructure decisions to feature design and user interface elements.In this role, you will:Influence Product Strategy: Contribute to the technical architecture and product roadmap, effectively balancing customer insights with long-term product sustainability.Deliver Features from Concept to Launch: Define, develop, and deploy product features that directly address customer needs. Teams include:Core Product Team: Manage all customer-facing channels (Slack, Discord, Email, etc.), core data models, and customer requests while balancing rapid execution with foundational integrity.Developer Infrastructure Team: Create the essential tools that empower every engineer at Plain to effectively deliver and maintain the product, with a focus on optimizing team speed and minimizing obstacles.Enhance Backend Architecture: Tackle some of our most intricate challenges, from data modeling to high-performance reporting, establishing standards for our development processes.Optimize Developer Experience: Ensure that Plain is not only user-friendly but also developer-friendly, from data pipelines to APIs.

About MetaviewMetaview is dedicated to eliminating toil in the workplace. We believe that toil hinders progress, much like friction impedes motion. Our innovative solution is found in Human-Computer Symbiosis.With the introduction of AI copilots, the way we work is set to transform:Encouraging a flow state while minimizing toil.Enhancing insight while reducing guesswork.Focusing on human-centricity rather than process-centricity.Metaview serves as the AI copilot for hiring processes.Founded in April 2018 by Siadhal and Shahriar, who left their roles at Uber and Palantir, respectively, to address their own challenges in product and team development. Today, we empower thousands of users at leading companies such as Quora, Robinhood, Brex, Elastic, and Replit.Our team is small, high-performing, and fast-paced, with a relentless focus on delivering exceptional work.

Join Attio in Revolutionizing CRM for the AI Era!At Attio, we are dedicated to transforming customer relationship management by creating the first AI-native CRM tailored for ambitious go-to-market teams. Our recent funding of $52M Series B, led by GV (Google Ventures) with contributions from Redpoint, Balderton, Point Nine, and 01A, enables us to tackle complex technical challenges and elevate industry standards.Your RoleAs a Senior Product Engineer on our dynamic Engineering team, you'll be at the forefront of innovation, addressing real-time infrastructure and architecting AI-native systems. Your contributions will ensure our users enjoy an effortless experience, all while maintaining our high standards for performance, reliability, and security.Key ResponsibilitiesUtilize your expertise in TypeScript, Node.js, and GCP to drive product advancements.Lead projects from inception to completion, resolving genuine customer challenges.Architect systems that support new features and optimize existing ones to meet scaling demands.Design intuitive REST API contracts for both internal and external users.Champion Attio’s Product & Engineering values within and beyond the organization.QualificationsProven experience in designing scalable, reliable, and secure backend systems.In-depth knowledge of modern Cloud Native architecture.Expertise in Node.js and TypeScript.A strong track record of ownership and successful product delivery.A proactive and self-driven approach to problem-solving, with a passion for innovation in distributed systems.Exceptional communication skills to convey technical concepts to diverse stakeholders.

Greetings from Team Granola! If you haven't had the chance yet, we invite you to explore our innovative projects and discover why joining us could be your best decision.We are on the lookout for a dedicated Product Engineer specializing in Backend development. Your mission? To help us scale our systems and prepare Granola for an exciting journey to 100x more users.In this pivotal role, you will tackle scaling challenges head-on, create secure and resilient infrastructure, and develop sophisticated backend solutions that enable thrilling new features.Your key responsibilities will include:Driving the evolution and scalability of our backend systemsDesigning and implementing high-performance APIs and servicesBuilding infrastructure to support advanced AI functionalitiesEnhancing database performance and optimizing query efficiencyContinuously improving system reliability and observability with better monitoring and alerting mechanismsCollaborating across teams to ensure our infrastructure accommodates ongoing product innovationYour ideal background includes:Proven engineering experience in tech-driven and product-focused environmentsStrong command of TypeScript and Node.jsPractical experience with cloud infrastructure and infrastructure as code (we utilize AWS with Terraform)In-depth knowledge of relational databases (PostgreSQL is our choice)Familiarity with serverless architectures (we are fans of AWS Lambda!)Solid grasp of security best practices and performance optimization techniquesAs a person, you are:Primarily a builder with a passion for innovationEager to work in-person from our London office (most of the time)Thriving in a startup environment (either you've worked in one or have a strong interest in the zero-to-one phase)Valuing collaboration with kind, ambitious, and pragmatic colleaguesEnthusiastic about infrastructure for AI/ML

Join the Freetrade TeamAt Freetrade, we're on a mission to simplify investing for everyone. For too long, the investment landscape has been overly complicated and costly, preventing many from maximizing their savings. We're here to change that.As we expand our team, we seek passionate individuals eager to transform the way our customers invest and build wealth. If you're driven by solving intricate challenges and crafting innovative solutions, you'll thrive here.With significant developments on the horizon for 2026, including our strategic alignment with the IG Group, we will maintain our independence while harnessing the support and resources of an industry leader.This year, we are ramping up our product roadmap, introducing exciting new features such as mutual funds, bonds, and family investment tools, while also exploring AI enhancements to elevate customer experiences.Why Become a Part of Our Engineering Team?As a vital member of our engineering team, you will contribute to shaping the future of investments. You will be instrumental in developing and sustaining a robust, scalable platform utilized by thousands of users daily. We embrace complex technical challenges, foster innovation, and create solutions that have a tangible impact. Here, your code empowers investors across the UK. Join us and turn visionary ideas into reality.We are actively searching for a talented Software Engineer to join our Backend Engineering squad.Our Core Tech Stack includes: NodeJS/TypescriptGoogle Cloud PlatformPostgreSQLKey Responsibilities:Deliver high-quality software within agreed timelines, tackling complex challenges by offering various solutions and evaluating trade-offs to support your team in making informed technical choices.Address technical challenges by efficiently providing scalable and maintainable solutions while balancing various trade-offs.Grasp the core features and KPIs of your product, collaborating closely with the Product Manager to propel the product’s development.Be prepared for an on-call environment, managing high-priority issues and knowing when to escalate matters.About You:You...

Join Our Team!At Plum, we are revolutionizing how people save and invest. Our mission is to empower individuals to grow their wealth for life, whether they are saving for their first home or enjoying retirement. Since our inception in 2016, over 2 million users across 10 European countries have saved more than £2 billion with our innovative automation and AI technology. We've been recognized with awards from esteemed organizations like Deloitte and Finder, reflecting our commitment to excellence.We are a passionate team of over 200 Plumsters working collaboratively across Europe, and we are eager to welcome more talented individuals to help us achieve our vision.Your RoleAs a Senior Backend Engineer at Plum, you will play a crucial role in shaping our technology and product offerings. We seek engineers who are not only technically adept but also understand the importance of delivering outstanding products to our customers.

About Our TeamJoin our innovative AI Platform team at realtimeboardglobal, where we are at the forefront of Miro’s AI-powered product vision. We are dedicated to developing the internal platform, tools, and APIs that empower Miro’s product teams to integrate and scale AI applications seamlessly. Our mission is to create a robust and adaptable technical foundation for AI innovation, enabling our teams to work efficiently, innovate responsibly, and deliver exceptional AI features to our users.Your RoleAs a Senior Backend Engineer within our AI Platform team, you will play a pivotal role in constructing and enhancing the core infrastructure that powers AI across Miro. You will establish the technical groundwork for how we develop, deploy, and manage AI/ML capabilities, serving tens of millions of users as we transition into an increasingly intelligent product. You will design internal tools that allow teams to experiment with and release AI features swiftly and responsibly, as well as manage data pipelines for AI applications. This is a unique opportunity to influence how AI is developed and embraced company-wide.

Join Our TeamAt Tracer, we are pioneering the development of autonomous AI agents designed to enhance production data pipelines. As a venture-backed startup, we are supported by a network of seasoned investors and industry leaders who share our vision of transforming AI into a critical component of enterprise software in the coming decade. Our compact team is composed of experienced professionals dedicated to delivering impactful solutions. Role OverviewWe are on the lookout for a Founding Senior Backend Engineer based in London. In this pivotal role, you will take ownership of building the core systems that convert production alerts into actionable root cause analyses (RCAs) and effective fix recommendations, targeting a select few high-value alerts.This position merges backend engineering with product development and customer-centric problem-solving, aiming to alleviate real-world production challenges with robust, reliable systems that engineers can depend on. Our Tech StackPython + LangGraph for multi-agent alert investigationRust for high-performance systemsClickHouse for managing high-volume event data and investigation historiesAWS + Terraform for self-sustaining infrastructureNext.js + TypeScript for an engaging frontend experience Key ResponsibilitiesAs the Founding Senior Backend Engineer, you will:Design and build the foundational alert, investigation, and root cause analysis (RCA) pipeline using Python.Develop essential systems including:Alert ingestion and normalizationContext enrichment and correlationProblem framing outputsHypothesis orchestration engineInvestigation execution runtimeInvestigation artifacts and reportingLead architectural decisions ensuring the system's observability, auditability, and reliability from day one.Work closely with the founders to deliver a focused set of high-impact alert types, while strategically expanding coverage.Create customer-ready documentation and reports that enhance user understanding and trust in the system.

At Spotify, we are on a mission to revolutionize the way creators and listeners engage with long-form storytelling through our Audiobooks initiative. Our objective is to create a seamless ecosystem for audiobook content, facilitating smooth transfers from publishers to listeners. This includes building the robust systems necessary for content ingestion, processing, and efficient delivery across our rapidly expanding global catalog. We are seeking a talented Senior Backend Engineer to join a dynamic and impactful team within the Audiobooks Pipeline sector. This team's primary responsibility is to design and scale systems that handle the ingestion, processing, and transformation of audiobook and eBook content, metadata, and royalties, ensuring that listeners receive the right content with utmost efficiency and quality. While this role encompasses full-stack responsibilities, the emphasis will be on backend and data-centric development. We are looking for an individual who thrives in uncertain environments, is passionate about learning, and is excited to tackle complex challenges across the tech stack.

Join Aircall, a revolutionary unicorn in the AI-powered customer communications sphere, trusted by over 22,000 companies globally to enhance revenue, expedite issue resolution, and empower customer-facing teams. We are transforming the landscape of customer communications by integrating voice, SMS, WhatsApp, and AI into a unified workspace.Our growth is driven by a straightforward principle: to enable teams to work smarter, not harder. Our AI Voice Agent automates routine calls, while AI Assist simplifies post-call tasks, and AI Assist Pro provides real-time insights, allowing individuals to excel in their roles. This synergy results in increased revenue, quicker resolutions, and scalable teams.Headquartered in Paris, with a solid presence in North America anchored in Seattle, Aircall also has teams in vibrant cities such as Madrid, London, Berlin, San Francisco, New York City, Sydney, and Mexico City. Our product is beloved by customers, and we are rapidly scaling, supported by top-tier investors and continuous AI advancements across multiple product lines.At Aircall, you'll become part of a dynamic company. We are ambitious, focused on product development, and execution-oriented, with a clear impact, swift decision-making, and genuine growth opportunities.Our Work Culture at Aircall: We prioritize customer satisfaction, leverage data for decision-making, and are dedicated to delivering significant outcomes. We cherish ownership, continuous improvement, and thoughtful agility. If you thrive in a collaborative, fast-paced environment where trust and impact are essential, you will thrive here.Position Overview:As a Senior Backend Software Engineer, you will take charge of designing, developing, deploying, and maintaining essential features that enhance customer value on our voice platform.You will be expected to advocate for best practices, mentor team members, and contribute to the broader Engineering community as part of your daily responsibilities.Quality, excellence, and agility are at the core of our delivery process, and you will play a pivotal role in elevating these standards.Utilizing a diverse array of backend technologies tailored to specific needs, all hosted on AWS, we create resilient services that deliver added value on top of voice while fully integrating with our customers' critical business tools (CRM, Helpdesk, E-Commerce, etc.).

Join xAI as a Backend Engineer, where you will play a vital role in building robust production systems that support grok.com and our API. We are looking for a highly motivated individual with expertise in scalable infrastructure and a passion for problem-solving. Your experience with Rust or C++, along with your ability to design and maintain distributed systems, will be crucial as you contribute directly to our mission of advancing AI technologies. Strong communication skills and a commitment to excellence are essential in our collaborative environment.

TL;DRDeducta is a rapidly expanding startup catering to some of the globe's most prestigious enterprises. With strong funding, we are committed to addressing today's most significant business challenges.We are seeking a Senior Backend Engineer who will play a pivotal role in the design, development, and upkeep of our core systems.In this role, your key responsibilities will include:Creating and sustaining high-performance, low-latency APIs for enterprise-level data processing systems.Delivering exceptional code promptly. Location: London, UK. Our office is situated near London Bridge, and we prioritize in-person collaboration. Compensation: The total compensation for this position begins at £150,000. Visa Sponsorship: We are willing to sponsor a visa for the ideal candidate to join our team. What is Deducta?Deducta is a leading data intelligence platform for global corporations. We provide unparalleled clarity into mission-critical data for some of the world's largest and most intricate organizations, starting with spend data.We are at the forefront of significant business transformations. Our partners leverage Deducta to achieve impactful results at remarkable speeds.‍What is the Role?We process vast datasets containing essential enterprise information from diverse sources and formats, structuring it effectively. Our system utilizes cutting-edge LLMs to tackle this challenge with unmatched precision and at previously unimaginable scales.As a Senior Backend Engineer, you will be responsible for designing, developing, and maintaining the foundational architecture of our platform as it expands.Your contributions will include:Designing, constructing, and maintaining data ingestion and processing engines capable of supporting mission-critical operations for the largest firms globally.Developing and sustaining ultra-fast, high-volume, and well-documented APIs to facilitate these systems.Driving business growth through a blend of creativity and experimentation to enhance our product, alongside proactive problem-solving for our clients.Working closely with both technical and non-technical team members to comprehend our customers' challenges and create solutions that address them.Success in this role means:Leading development initiatives from concept to production.Consistently driving enhancements and new features. Who will be the right fit?We are in search of a technically outstanding engineer who excels in a role that offers autonomy and ownership.You might be a great fit if you possess…Strong experience in object-oriented programming within cloud environments (e.g. AWS, GCP, or Azure), with .NET experience considered a plus.Familiarity with SOLID principles, domain-driven design, and Clean Architecture methodologies.A passion for...

Join Duffel as a Backend Software Engineer and play a pivotal role in shaping the future of travel technology. We are seeking passionate individuals who thrive on solving complex challenges and are excited about creating scalable and efficient backend systems.

Join Spotify as a Senior Backend Engineer - Subscriptions and play a pivotal role in enhancing our subscription services.In this position, you will collaborate with cross-functional teams to design and implement scalable backend systems, ensuring seamless integration and exceptional user experiences.

Join Our Team as a Senior Product Engineer (AI)At Plain, we're revolutionizing customer support for the next generation of B2B enterprises. Our goal is to create the fastest and most powerful platform that enables businesses to transition from reactive support methods to building genuine relationships with their customers.Renowned companies like Cursor, Raycast, and Granola rely on Plain to centralize customer interactions, enhance team collaboration, and elevate workflows through advanced AI technology.The landscape of B2B customer support is evolving dramatically, with AI paving the way for innovative customer engagement strategies. Support has shifted from being a disconnected, slow process to a cohesive, company-wide initiative that spans channels like Slack, Discord, and beyond. The traditional methods just can't keep up anymore.This position is hybrid, requiring 3 days a week in our London office.Your RolePlain is in an extraordinary position, already powering support solutions for high-growth businesses with our incredibly fast and scalable platform. AI has been integral to our offering from day one, and now we’re committed to deepening its impact across all facets of modern customer support.We are on the lookout for a Senior Product Engineer with a passion for customer success to elevate our AI initiatives. In this role, you will develop the infrastructure necessary for rapid, secure, and confident delivery of AI features, taking ownership of challenges from inception to execution and playing a pivotal role in crafting a category-defining product.In this role, you will:Take full ownership of AI functionalities, including agents, assistants, insights, and beyond—from concept through to production.Design and implement backend services that support AI integrations and data pipelines.Create robust APIs and abstractions for internal AI applications.Enhance system scalability through caching, optimization, and processing patterns.Contribute to the evolution of our AI infrastructure, including architecture, evaluation, and iteration pipelines.Tackle complex challenges surrounding AI accuracy, reliability, and quality using rigorous quantitative methods.Represent our work externally through writing, speaking engagements, and connections with the broader AI community.This Role is Ideal for You If You...Are an experienced backend engineer with a proven track record of shipping AI products in the era of OpenAI and Anthropic, particularly in text and data-intensive AI applications.Possess a deep understanding of AI technologies and their applications in real-world customer support scenarios.

Join the Future of Identity with Socure!At Socure, we are revolutionizing the identity verification landscape, establishing a trust infrastructure that safeguards the digital economy. Our mission is to verify 100% of legitimate identities in real-time, proactively preventing fraud before it occurs. Our work addresses complex challenges, impacting businesses, governments, and millions of individuals globally every day.We seek passionate individuals ready to take on significant responsibilities. If you thrive in a fast-paced environment, possess critical thinking skills, and approach challenges with an ownership mindset, you’ll fit right in. If predictability is what you seek, this might not be the role for you. However, if you're eager to help shape the future of identity with a team that holds itself to the highest standards, keep reading.As a Senior Backend Engineer, you will be a critical player in our product-focused teams, designing and building scalable systems that have a meaningful impact. You will engage directly with customers to enhance satisfaction and drive continuous improvements across our product offerings.In this role, you will lead the design and implementation of distributed systems, take ownership of essential non-functional requirements such as scalability, security, and reliability, and mentor fellow engineers while remaining actively involved in development. Your expertise will be vital throughout the entire software development lifecycle, from architecture and implementation to testing, documentation, and production support.This position is ideal for backend engineers who are passionate about building robust systems using Golang, excel in a product-driven environment, and want to influence technology at scale.Key Responsibilities:Design, develop, test, and debug scalable backend services within distributed systems.Deliver on key non-functional requirements, including scalability, availability, performance, and security.Develop and maintain comprehensive tests (unit, integration, functional) to ensure high coverage and reliability.Contribute to and produce technical documentation for knowledge sharing and collaboration.Break down complex projects into actionable tasks and guide teams in their execution.