Solutions Engineer at Square | London, United Kingdom

Are you ready to embrace an exciting new opportunity as a System Engineer? At DeepHealth, we are seeking a dedicated professional who is eager to take charge of the design, maintenance, and optimization of our cutting-edge IT systems and infrastructure. Your role will be crucial in ensuring the reliability, security, and scalability of the environments that support our global operations. If you are passionate about driving continuous improvement, enhancing processes, and collaborating with diverse teams to deliver high-performing and compliant systems, we want to hear from you!

Wehrtyou is excited to announce an opening for a Trading Systems Engineer within our vibrant Systems team. This team is instrumental in developing and managing the high-speed, dependable infrastructure that drives our global trading operations. As part of our team, you'll play a crucial role in deploying and overseeing all servers in our trading environment, ensuring exceptional performance and reliability. In this role, you'll encounter a range of technical challenges that have a significant impact on our live trading and research operations. Daily tasks will include installing and configuring hardware and software, remote administration, monitoring system performance, testing new technologies, and optimizing system efficiency. We're looking for a passionate and innovative technologist eager to learn and contribute to meaningful projects in a fast-paced and collaborative setting. If you're enthusiastic about working on cutting-edge systems vital to our success, we encourage you to apply!

Join Hudson River Trading (HRT) as a Windows Systems Engineer within our dynamic Enterprise Engineering team. In this pivotal role, you will play a key part in scaling HRT’s global hybrid Windows deployment. You will develop advanced automation techniques, configuration-as-code, and infrastructure-as-code solutions to effectively manage a diverse fleet of high-performance user endpoints, mission-critical servers, cloud infrastructure, and secure remote computing environments worldwide. Your expertise will help streamline operations, enhance platform stability, and bolster the resilience of our Windows infrastructure through the design and implementation of automation strategies that proactively identify and resolve technical inefficiencies across both on-premises and Azure environments.The ideal candidate is a seasoned Microsoft technology engineer with a knack for problem-solving and the ability to thrive in a fast-paced setting. Exceptional communication and collaboration skills, along with a positive demeanor towards colleagues and internal customers, are essential for success in this role.

Monumental is at the forefront of revolutionizing the construction industry through the integration of advanced robotics and innovative software solutions. Our vision is to transform the way buildings are created, enabling the construction of stunning, customized structures in just a single day while minimizing the need for labor.With an impressive trajectory of growth, our company is experiencing unprecedented demand from customers, necessitating rapid expansion of our team. We have successfully demonstrated that our technology and operational framework are effective in the Netherlands, and we are eager to replicate this success in the UK.Our dynamic team, consisting of around 100 talented engineers and technicians, hails from renowned companies such as Palantir, Qualcomm, Dyson, Shopify, Tesla, and Meta. This is a rare chance to join an early-stage, high-growth startup where you can collaborate closely with an experienced founding team backed by top-tier investors.Discover more about why we believe working in construction is worthwhile, and delve into our vision and company background. You might also enjoy this video showcasing our office culture.Role OverviewWe are seeking an exceptionally entrepreneurial leader to become our inaugural Country Manager in the UK. This role is not about following a pre-established playbook; instead, you will be responsible for crafting and implementing the strategies required to penetrate this new market from the ground up.Monumental stands out as a fully vertically-integrated company, where we conceptualize and fabricate our own hardware and software. We manufacture our robots in-house and deploy them on construction sites with our dedicated team, functioning as a subcontractor.If you are excited about the challenge of implementing cutting-edge technology in a complex operational landscape that has remained unchanged for over a century, while also driving sales and building a local team, we would love to hear from you.

Why Join Faculty?Founded in 2014, Faculty believes that artificial intelligence is the defining technology of our era. Over the years, we have partnered with more than 350 global clients, transforming their operations using human-centric AI solutions. Discover our impactful projects here.We prioritize innovation over trends, developing responsible AI that genuinely drives results. Our team offers unmatched expertise in technical, product, and delivery aspects, serving clients across various sectors including government, finance, retail, energy, life sciences, and defense.As our business expands rapidly, we seek individuals who share our intellectual curiosity and aim to create a meaningful legacy through technology.Join us in harnessing AI's potential and making a significant difference in its applications.About Our TeamOur Defence team is dedicated to developing and implementing human-centered AI solutions that provide our nation with a strategic advantage in defense. We collaborate closely with clients to deliver ethical and cutting-edge AI for high-stakes scenarios, ensuring the balance of global power critical to our freedoms.Due to the sensitive nature of our work with Defence clients, you will need to be eligible for UK Security Clearance (SC) and should be prepared to work on-site with these clients 2 to 4 days a week, which may involve travel across the UK.When not on client sites, you will enjoy the flexibility of working from our London office or remotely from any location within the UK.Role OverviewAs a Senior Machine Learning Engineer, you will spearhead the development and deployment of innovative AI systems for a diverse client base. Your responsibilities will include designing, building, and deploying scalable, production-quality ML software and infrastructure that adheres to stringent operational and ethical standards.This position requires a proactive, cross-functional approach, blending technical skills, engineering leadership, and strong client-facing abilities.

About Aptura AI Aptura AI partners with leading AI labs and organizations across healthcare, finance, and legal sectors. The company brings specialized expertise and human oversight to improve the accuracy and reliability of AI platforms in regulated industries. Within healthcare, Aptura AI supports clients as they train and refine AI models ahead of real-world use. The team designs and implements evaluation frameworks to measure clinical accuracy and performance. Sourcing clinicians and annotating large volumes of medical data, such as consultation notes, images, and pathology reports, are core strengths. These efforts are crucial for robust model training and validation. Projects at Aptura AI help AI systems learn from authentic clinical interactions, workflows, and care delivery. The work directly influences outcomes for both clinicians and patients. Past projects include SNOMED medical coding for device registration, AI-powered multidisciplinary team (MDT) platforms, and AI-assisted recruitment for clinical trials. The team manages projects end to end, ensuring clinical standards are met and the right experts are involved. Aptura AI is a small, in-person team based in London. The group values quick execution, high standards, and meaningful contributions from every member. Role Overview: Clinical Operations Lead This position is the first operational hire for the healthcare team and comes with broad responsibilities and room to grow. The Clinical Operations Lead will use clinical experience and creative thinking to build and strengthen a network of healthcare professionals interested in short-term, remote, and flexible AI projects. Key tasks include joining early client conversations, identifying and recruiting suitable clinicians, and preparing resources tailored to each project. The role covers onboarding clinicians, managing weekly payments, keeping clinicians engaged, and ensuring clients receive attentive, high-quality service. This is a hands-on role with significant ownership from day one. It also brings the chance to collaborate directly with leading AI labs worldwide. Location United Kingdom (in-person team, London-based)

Join causaLens, where we are revolutionizing the way enterprises operate by providing reliable Digital Workers. In a future where reliance on Digital Workers is essential, our innovative technology is akin to the transformative impact of machines in manufacturing. We have developed the first factory and Operating System dedicated to the creation, deployment, and management of Digital Workers. For too long, organizations have struggled with repetitive tasks, overwhelming tools, and costly consultancy services.It’s time to simplify operations.Our Digital Workers handle the mundane workflows, allowing human talent to concentrate on what truly matters. We are trusted by industry leaders like Johnson & Johnson, Cisco, IPG Group, and Syneos Health.With over $50 million in funding from esteemed investors such as Molten Ventures (formerly Draper Esprit), Dorilton Capital, and IQ Capital, alongside visionary angel investors including the CEO of Revolut, we are poised for growth.Discover more about our culture through these insightful articles:1. A Hiring Framework for a New Kind of Services Company2. The Primacy of Winning

Veeva Systems is a trailblazer in the industry cloud space, dedicated to accelerating the delivery of therapies to patients within the life sciences sector. As one of the fastest-growing SaaS companies ever, we proudly achieved over $2 billion in revenue last fiscal year and are poised for even greater growth.Our core values at Veeva include doing the right thing, ensuring customer success, fostering employee success, and promoting speed. In 2021, we made history by becoming a public benefit corporation (PBC), which legally commits us to balancing the interests of our customers, employees, society, and investors.As a Work Anywhere company, we empower you to work flexibly from home or the office, allowing you to thrive in your preferred environment.Join us in transforming the life sciences industry, and making a positive difference for our customers, employees, and communities.The RoleAs part of Veeva Link, you will enhance the life sciences sector's ability to connect with key individuals, thereby improving research and patient care. Your work will help professionals identify the right contacts for clinical trials, educational programs, and advisory boards. This efficient access will significantly reduce the time-to-market for essential drugs, facilitate trials with the most relevant experts, and disseminate crucial information about new treatments within the life sciences community. For more details, please visit our product page at https://www.veeva.com/products/veeva-link/. As a Data Engineer, you will focus on optimizing our data pipelines and be accountable for a substantial segment of the Link data processing platform. We highly value end-to-end ownership, placing you at the forefront of discovering, designing, and implementing enhancements to the product's data pipelines to adapt to the evolving market demands. You will take charge of features and innovations while adhering to SOLID and clean software principles, participate in the architectural improvement process, and ensure quality outcomes. Monitoring, metrics, and observability will be integral aspects of your feature design process.

Join vidrush as a Backend Engineer specializing in TypeScript and React, along with AWS Cloud technologies. You will be integral in developing and maintaining billing systems that are crucial to our operations.This role involves collaborating with cross-functional teams to implement solutions that enhance our product offerings and improve user experience. If you are passionate about backend development and cloud technologies, we would love to hear from you!

Join Egis Group as a Fire Engineer and play a crucial role in ensuring fire safety and compliance in various projects across Edinburgh, Glasgow, and London. We are looking for passionate and skilled professionals who can collaborate with multidisciplinary teams to deliver innovative fire engineering solutions. Your expertise will be critical in assessing fire risks, designing effective fire protection systems, and ensuring that all projects meet stringent safety standards.

Fuse Energy is an innovative renewable energy startup dedicated to rapidly delivering a terawatt of renewable energy. By leveraging first-principles thinking and advanced technology, we are on a mission to create a significantly improved energy system. Our company has successfully secured $170M in funding from leading investors, including Multicoin, Balderton, Lakestar, Accel, Creandum, Lowercarbon, Ribbit, Box Group, and notable angels like Nico Rosberg, co-founder of Solana, along with general partners behind industry giants such as Meta, Revolut, Spotify, and Uber.We are constructing a fully integrated energy enterprise that encompasses the development of solar, wind, and hydrogen projects, real-time power trading, and distributed energy installations. By selling directly to consumers, we eliminate middlemen, reduce costs, and pass savings on to our customers.Moreover, we are building the Energy Network: a decentralized platform of smart devices that rewards users with Energy Dollars for electrifying their homes, shifting usage to off-peak hours, and assisting in grid balancing. This network enhances grid stability, which is essential for scaling AI data centers and other energy-intensive sectors.We are currently seeking an IoT Engineer to design, build, and scale the connected hardware that powers the Energy Network. This hands-on position involves working with embedded systems, networking, device security, and fleet connectivity from prototype to deployment. You will contribute to creating resilient connectivity, secure provisioning, and robust telemetry across our expanding fleet of distributed energy devices.As an IoT Engineer, you will be instrumental in shaping how our devices connect, communicate, and evolve securely at scale, collaborating closely with firmware, hardware, and backend teams to deliver production-ready systems.

Role overview Speechify seeks a Senior Software Engineer in London to help define and improve the core experiences within its product. This position focuses on creating features that encourage strong user engagement and support overall satisfaction. What you will do Design and build new features for the core Speechify product Collaborate with engineering, product, and design teams Deliver high-quality software that aligns with product objectives Location This role is based in London, United Kingdom.

Join Our JourneyAt Mollie, we believe businesses deserve seamless financial solutions. Since our inception in 2004, we have worked tirelessly to revolutionize payments and money management across Europe.With over 250,000 companies relying on our comprehensive platform, we empower them to receive payments, manage their finances, and grow at their own pace. Our solutions are simple, scalable, and designed with real-world business needs in mind.As one of Europe’s fastest-growing fintech companies, our team of over 900 Mollies across more than 12 locations drives our success. We prioritize speed, purpose, and a genuine commitment to our customers. Whether you are tackling challenges, crafting market-leading products, or leveraging AI for smarter work processes, you'll have the autonomy to innovate and the confidence to make an impact.If you’re eager to grow, influence the future of fintech, and be part of a high-achieving team, we invite you to apply.Your RoleAs a vital member of our global Sales Engineering team, you will collaborate with the Merchant Sales group in London. Your role is to connect complex technical capabilities with tangible business outcomes. Rather than merely demonstrating our API, you’ll illustrate to the UK’s most ambitious merchants how Mollie can streamline their checkout processes, enhance operational scalability, and foster business growth.In this Sales Engineer position, you will take the lead on the technical journey for our Enterprise segment, swiftly identifying and implementing solutions that facilitate new business acquisition. From strategizing during pre-sales to overseeing the technical onboarding of new partners, you will be the go-to expert. Your ability to transform process-related challenges into sophisticated product solutions will ensure that every merchant we onboard is set up for lasting success on our platform.Your ContributionsWork closely with the sales team to understand customer needs and guide them through our SaaS offerings.Lead the technical pre-sales initiatives to develop solutions that attract high-value merchants to Mollie.Manage the technical onboarding process for merchants, ensuring a smooth transition to our platform.Design and propose technical solutions that address business challenges such as checkout scalability and cost efficiency.Translate intricate technical frameworks into straightforward, outcome-oriented business benefits for stakeholders.

Join Mustard Systems, where we harness the power of statistical modeling to analyze sports events, enabling accurate predictions of future outcomes. By leveraging our proprietary datasets, sophisticated statistical models, and custom software solutions, we aim to deliver precise forecasts in the world of sports.We prioritize speed and real-world impact over perfection in code. If you are an engineer who excels at rapid problem-solving and thrives in a flexible, outcome-oriented environment, you'll find a home with us.Your Role:Enhance our connections to new liquidity providers using advanced web scraping and reverse engineering techniques.Create and maintain low-latency, real-time data feeds to support trading strategies based on extracted data.Improve system visibility for teams to gain insights into integration challenges and enhancements.Our agile methodology allows us to adapt plans as new information and opportunities arise. Developers play a pivotal role, taking complete ownership of their software from design through development, testing, review, and production support.Key Responsibilities:Design and Implement Impactful Features: Develop features that align with our business objectives, ensuring high-quality code that delivers measurable value.Collaborate on Code Quality: Review and test peer code to uphold functionality, maintainability, performance, and quality standards.Production Support: Take charge of your team’s software in production, ensuring stability and prompt resolution of any issues.Cross-Team Collaboration: Partner with other development teams on cross-functional projects, working alongside traders and quants to devise the best solutions to real business challenges.Participate in Out-of-Hours Support for our Software Systems.Core Technology Stack:Languages: Python (3.10+), JavaScript/TypeScript for frontend tasks, and Go for select infrastructure.Tools: RabbitMQ and Kafka for messaging, PostgreSQL and Redis for data storage.Environment: Linux servers.Observability: OpenTelemetry, Prometheus, Grafana, and Zabbix.Required Qualifications:Solid experience in software development, particularly with Python.A degree in Computer Science or a related quantitative field from a recognized university.Excellent communication skills, enabling you to explain complex technical concepts to both technical and non-technical audiences.Strong decision-making skills, with an ability to make informed trade-offs in implementation and architectural decisions, balancing innovation with practicality.Experience with web scraping and related technologies is essential.

Join our dynamic engineering team at Hypersonica Productions Ltd. as a Senior Systems Engineer. In this pivotal role, you will lead the design and implementation of innovative systems that drive our cutting-edge projects. Collaborate with a talented group of engineers to enhance our systems architecture, ensuring optimal performance and reliability.Your expertise will contribute to the development of scalable solutions while mentoring junior engineers and fostering a culture of continuous improvement. If you are looking for a challenging opportunity to make a significant impact in a forward-thinking company, we want to hear from you!

£65,000 - £80,000 / Hybrid - London Join IONATE, a pioneering deep technology scale-up dedicated to transforming the future of smart grids. We are on the lookout for a Senior Power Systems Engineer who will take a leading role in power system modeling, overseeing projects from initial concept to successful commercial deployment.Your primary focus will be on power systems development, conducting high-resolution data analysis, and grid modeling. You will be instrumental in conducting design reviews and engaging in technical discussions, bringing an analytical engineering approach that merges innovative ideas with robust technical reasoning to tackle intricate challenges.Additionally, you will be a key player in supporting business development, project execution, and testing activities, ensuring all tasks are completed on time and within budget. Key Responsibilities:Develop and sustain high-fidelity power system models for grid analysis and product development.Execute power system simulations and EMT simulations encompassing load flow, short-circuit and fault analysis, transient stability, fault-ride through, and harmonic propagation studies.Perform detailed data analysis to assess network behavior, power quality, dynamic performance, and overall system reliability.Lead technical design reviews and provide engineering support across interdisciplinary teams.Assist in defining IONATE’s product architecture and integrating our solutions into electrical networks, ensuring adherence to relevant grid codes and regulatory standards.Work closely with hardware, software, transformer, and control engineers to validate system-level performance from simulations to field deployment.Offer technical insights for business development initiatives, including feasibility studies, technical proposals, and customer interactions.Create structured technical documentation detailing methodologies, assumptions, analyses, and results to support internal governance and external certification processes.

Omnea is transforming enterprise procurement by bringing every step of the purchasing process into a single AI-driven platform. Instead of long email chains and scattered approvals, Omnea streamlines requests, automates approvals, checks supplier risk in real time, and provides clear spending insights. Global companies such as Spotify, MongoDB, Monzo, and Albertsons already rely on Omnea’s platform. Backed by $75M from Khosla Ventures, Insight Partners, and Accel, Omnea has seen rapid growth, with Annual Recurring Revenue increasing tenfold to reach double-digit millions in just 18 months. The company is currently ranked the 4th fastest growing startup in Europe. The team includes experienced founders and operators, many with backgrounds in scaling successful startups like Tessian. Meet some of the team, Ben, Abs, Sabrina, and Rebe, or get a sense of the culture here. Role overview As a GTM Systems Engineer in London, the focus is on building and scaling the systems that power Omnea’s revenue teams. This mid-level position blends technical expertise with a strategic approach to go-to-market operations. What you will do Design and build infrastructure for Sales, Marketing, and Customer Success teams Integrate advanced platforms to improve operational efficiency Create automations and AI-driven solutions to streamline processes Optimize workflows so teams can operate more effectively Who you’ll work with This role collaborates closely with leaders and operators who have scaled high-growth startups and delivered products to global enterprises.

Role Overview Checkatrade is seeking an IT Systems and Infrastructure Engineer (Fixed-Term Contract) to join the team in Moorgate, London. This role focuses on strengthening and maintaining the company’s IT backbone across hybrid cloud environments. The engineer will manage day-to-day operations, automate processes, enhance security, and support the scalability of Checkatrade’s infrastructure. Main Responsibilities Build and maintain secure, reliable infrastructure to support business operations and internal teams. Spot areas for improvement in infrastructure management and implement more effective solutions. Work closely with security, platform, and software engineering teams to deliver stable and dependable tools and systems. Ensure systems remain stable, secure, and easy to use for teams across the business. What We’re Looking For Solid experience managing IT infrastructure in Microsoft environments, including Windows Server, Active Directory, and Microsoft 365. Hands-on experience with identity and access management, especially using Okta for SSO, MFA, and user lifecycle management. Comfort working with cloud platforms like Azure, and familiarity with AWS or Google Cloud. Experience supporting modern workplace tools such as Google Workspace and managing endpoints across macOS, Windows, and ChromeOS. Good understanding of networking and security basics, including DNS, VPNs, and firewalls. Ability to automate tasks or workflows using scripting languages (PowerShell, Python, Bash) or tools like Okta Workflows or Zapier. Strong problem-solving skills and the ability to explain technical concepts clearly to different audiences. Location This position is based at Checkatrade’s Moorgate office in London.

WHO WE AREAt Trustly, we are shaping a smarter, faster, and more secure financial future by transforming the world of payments. As a pioneering force in Open Banking Payments, we are establishing Pay by Bank as the new standard at checkout, delivering unmatched freedom, speed, and convenience to millions of consumers and merchants globally.Our Vision: To create the world’s most disruptive payment network and redefine the payment experience.Trustly is a diverse team of innovators, collaborators, and achievers. If you are motivated by a strong sense of purpose and excel in a dynamic, entrepreneurial, and high-growth environment, we invite you to join our team and be part of a revolution in how the world pays.ABOUT THE FP&A TEAMThe Financial Planning and Analysis (FP&A) team is integral to Trustly’s financial management. By delivering timely, precise, and effectively communicated insights into the financial health and performance of the company, as well as coordinating budgeting and forecasting activities across the organization, the FP&A team plays a vital role in supporting robust financial management. They are also responsible for the information we share with various stakeholders, including investors and regulatory bodies.ABOUT THE ROLEWe are looking for an enthusiastic and experienced FP&A Manager to spearhead our central FP&A function. This pivotal role will provide reporting, strategic insights, and financial counsel to the executive team, oversee the monthly reporting, budgeting, and forecasting processes, and facilitate crucial business decisions. The ideal candidate will possess a commercial mindset, strategic thinking capabilities, exceptional analytical skills, sound business judgment, and outstanding communication skills (both oral and written). A proven history of establishing financial processes and reporting in a fast-paced startup or scale-up environment, or within a new business unit of a larger organization, is essential.