Senior UI Engineer - Design System

Hypersonica develops defense technology in Europe, focusing on speed, resilience, and independence. The company tackles complex technical problems that influence the future direction of the industry. Role overview The Senior Verification and Validation Systems Engineer position is based in London and supports a core business priority. This role requires deep technical knowledge, independent problem-solving, and sound decision-making. Senior engineers at Hypersonica have a direct influence on both project outcomes and the company’s overall progress. What sets this role apart Contributes directly to European technological sovereignty and defense capability Offers the chance to shape responsibilities based on individual strengths and insights Collaboration with a small, highly skilled team Requirements Significant experience in systems engineering, verification, or validation Proven ability to work independently and deliver results with minimal supervision Track record of achieving ambitious or unconventional goals Hypersonica values expertise and unique viewpoints more than formal titles. The scope of this position will adapt as the engineer brings their own skills and ideas to the team.

Join Alten as a Space Systems Verification and Integration Engineer, where you will be at the forefront of space technology. In this role, you will be responsible for validating and integrating complex space systems, ensuring they meet the highest standards of performance and reliability. Collaborating with multidisciplinary teams, you will engage in rigorous testing procedures and contribute to groundbreaking projects in the aerospace sector.

wehrtyou is hiring a Design Verification Engineer to help ensure the quality and reliability of new designs. This position is available in Austin, Boulder, Chicago, London, or New York. Role overview This role centers on verifying the functionality of complex hardware or system designs. The Design Verification Engineer works closely with colleagues from different teams to review requirements, identify potential issues, and confirm that products meet high quality standards. What you will do Develop and maintain verification plans for new and existing designs Create and execute test cases to validate product functionality Collaborate with engineering and product teams to address issues and improve processes Location Positions are available in Austin, TX; Boulder, CO; Chicago, IL; London, UK; and New York, NY.

Join Alten as a Senior Systems Engineer and be part of a leading technology consultancy that specializes in engineering and IT services. In this critical role, you will drive innovative solutions and enhance system performance across various projects.

About Gigs Gigs builds a platform that lets technology companies add global mobile connectivity to their products. The goal: make it as easy to offer mobile services as it is to set up payments. Gigs removes telecom complexity for customers ranging from fintech startups launching mobile plans to HR platforms managing work phones. The team includes about 100 people working across the US and Europe, backed by nearly $100 million from investors like Ribbit Capital, Google, and Y Combinator. Gigs brings together engineers, product specialists, and business leaders with backgrounds at Stripe, Airbnb, Shopify, and other top tech companies. The company is growing quickly and tackling both technical and regulatory challenges to make connectivity seamless. Core Values Speed: Work with urgency and treat each week as important for progress. Ownership: Take initiative when problems arise and act with autonomy. Customer Obsession: Focus on customer success as a measure of company success. Ambiguity: Use good judgment and instincts to make decisions, even with incomplete information. First Principles: Question established practices and seek to understand the reasons behind them. Role Overview: Senior IT Systems Engineer The Senior IT Systems Engineer will help ensure that everyone at Gigs has the access, tools, and support needed to work efficiently. This position focuses on building and automating corporate IT infrastructure. The role is hands-on and results-driven, joining as the third member of the Security & IT team. Locations London, Amsterdam, Berlin

Join Wise as a Senior Content Designer specializing in verification processes. In this role, you will create user-centered content that enhances the customer experience, ensuring clarity and consistency across our digital platforms. You will collaborate closely with product managers, UX designers, and engineers to develop and refine our verification-related content.

Statkraft is looking for a Senior Power Systems Engineer to join the London office. This position centers on creating solutions that address shifts in the energy sector. Role focus The Senior Power Systems Engineer will work on challenges related to the evolving energy landscape. The work involves applying deep knowledge of power systems to develop practical responses to industry changes. What you bring Expertise in power systems engineering Strong interest in shaping the future of energy systems

Join Alten as a Senior Power Systems Engineer and be part of an innovative team dedicated to delivering cutting-edge solutions in the energy sector. In this role, you will leverage your expertise in power systems to design and implement complex engineering projects, ensuring efficiency and effectiveness in energy management.

Role overview Facility Performance Consulting Limited is seeking a Senior Digital Buildings System Engineer based in London. The position centers on designing and delivering advanced digital systems that support building performance and sustainability objectives. What you will do Design digital systems to manage and optimize building operations Implement solutions that contribute to efficiency and sustainable outcomes Collaborate with colleagues to deliver integrated project results Requirements Background working with digital building technologies Interest in sustainability and technical innovation Comfort working collaboratively on complex projects Facility Performance Consulting Limited welcomes candidates motivated by technology and sustainable design.

Join Our Innovative Team as a Senior AI Engineer (Agentic Systems)At StarCompliance, we are at the forefront of creating software solutions that address critical compliance needs for our global clientele. As we integrate AI as a fundamental capability throughout our software development lifecycle, we invite you to be part of this transformative journey.We are looking for a Senior AI Engineer to spearhead the practical implementation and expansion of AI-assisted and agentic engineering within our teams. This is a hands-on role where you will engage directly with real codebases, leveraging cutting-edge AI-native development environments (Cursor preferred) to revolutionize the software development process.Your mission will be to evolve AI from a mere tool into a fully embedded system that is repeatable and scalable. You will craft and execute playbooks, establish workflows, and define patterns that allow our teams to harness the power of parallel AI agents, facilitate autonomous code reviews, and create AI-driven delivery pipelines. Additionally, you will play a pivotal role in launching new initiatives, ensuring they are built on the right architecture and AI-enabled engineering practices from the outset.This position is part of our R&D Engineering team and collaborates closely with Platform, QA, and Product Engineering. Here, influence is gained through tangible delivery rather than hierarchy.Our Vision of AIWe view AI not just as an assistant, but as an integral component of our engineering ecosystem. We expect engineers in this role to embrace this perspective and drive our AI initiatives forward.

Tipalti Solutions seeks a Senior ERP Systems Software Engineer based in London. This role centers on designing and building ERP solutions that align with both customer needs and company objectives. Collaboration across departments is key, as the position involves working closely with other teams to refine and expand the ERP software. Main responsibilities Lead the architecture and development of ERP systems Work with cross-functional groups to enhance software features Drive updates and improvements to existing ERP products Use deep ERP knowledge to address complex technical issues Requirements Significant experience working with ERP systems Strong foundation in software engineering and solution design Proven ability to collaborate with multiple teams Focus on delivering dependable, high-quality solutions

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!

Join our dynamic team at Egis Group as a Senior Systems Integration Engineer specializing in rail systems. In this pivotal role, you will be responsible for integrating complex systems that enhance the efficiency and safety of rail operations. Your expertise will contribute significantly to the evolution of rail transport, ensuring seamless integration of technologies within our projects.As part of a collaborative environment, you will work closely with cross-functional teams to design, implement, and optimize systems, leveraging your technical skills while also engaging in problem-solving and project management. Your contributions will be vital in delivering high-quality solutions that meet the needs of our clients.

Role overview Funding Circle seeks a Lead Model Validation Analyst in London. This role centers on upholding the integrity and accuracy of financial models that inform business decisions and manage risk. The analyst will play a central part in ensuring models meet high standards and support the company’s goals. What you will do Develop and enhance methodologies for validating financial models. Carry out thorough reviews to evaluate model performance and dependability. Collaborate with various teams to improve analytical processes across the business. Contribute to shaping the model risk management framework to promote transparency and uphold high standards. Impact This position is vital to Funding Circle’s commitment to strong model governance and analytical quality. The analyst’s work supports clear, informed decision-making and reinforces transparency throughout the company.

Role Overview Zaizi is hiring a Senior Systems Engineer (SFIA4) to help deliver advanced technical solutions for the UK Defence and National Security sector. This position is based in London and focuses on building mission-critical systems that blend Cloud-native architectures, data-driven tools, and Artificial Intelligence within safety-critical settings. What You Will Do Guide technical execution for complex defence and national security programs. Integrate modern Cloud-native technologies, data-centric decision-making platforms, and AI into secure, high-stakes environments. Act as the connection between strategic goals and hands-on engineering, ensuring digital technologies meet the security and rigor required for national defense. Influence customer direction at the executive level and oversee complex system integrations throughout the full systems lifecycle.

Join Longshot Systems, a pioneering company dedicated to developing cutting-edge platforms for sports betting analytics and trading.We are in search of a Senior Software Engineer to become a vital member of our trading platform team. As a small but highly focused organization, we seek an individual who can effectively architect and implement solutions to achieve our upcoming product, performance, and stability objectives. This role involves ownership of our technical standards, coding guidelines, CI/CD processes, observability, and security measures. If you are passionate about delivering features and enhancing the overall technical excellence of our team and platform, we want to hear from you.Our trading platform is responsible for integrating with numerous bookmakers and exchanges globally, normalizing and consolidating global odds data across various sports for internal trading strategies. We manage thousands of odds updates and trades per second, maintaining stringent standards for latency, correctness, and feed quality. You will be at the forefront, integrating additional trading venues, optimizing key platform components, and enhancing the safety and speed of trading. Our team also oversees a large historical data repository, supporting the company's broader trading and research initiatives.Our key platform systems are primarily built using Golang, featuring message buses and databases at the core of our architecture. While fluency in Golang is advantageous, it's not a prerequisite, as we have a team full of experts ready to assist you in learning.We embrace a hybrid work model, with Thursdays in our London office (Farringdon) and flexible arrangements for the rest of the week. Our standard working hours are 10 AM to 6 PM UK time, Monday through Friday, with support for flexible schedules to help our team achieve their objectives.

Your mission:As a key member of the Business Onboarding Verification team at Wise, you will play a pivotal role in transforming the way we verify business customers on a global scale. Your work will harmonize exceptional customer experiences with compliance and regulatory standards.Your contributions will resonate throughout the entire organization, influencing customer-facing teams, platform teams, tool development teams, and regional units around the world. You will showcase the power of strategic content design in every interaction.Utilizing your systems-thinking approach, leadership capabilities, and content design expertise, you will craft comprehensive user journeys, minimize hurdles, and facilitate seamless onboarding for Wise customers.Your responsibilities will include:Defining the future of verification by establishing a clear vision, implementing standards, and creating scalable patterns across various teams at Wise.Taking ownership of content design within your squad, shaping messaging and user experiences.Collaborating with design leaders from other squads to create a unified, cohesive experience for customers.Working alongside regional teams, tooling teams, operations teams, and compliance to ensure simplicity and consistency throughout the user journeys.Leveraging your design leadership skills to enhance quality, maturity, and alignment within the squad.Partnering with product design, management, and engineering teams to lead initiatives and deliver impactful work.Strategically planning and prioritizing tasks, while onboarding new content designers as the team expands.In this role, you’ll have the chance to:Guide teams towards impactful outcomes and produce work you can take pride in.Engage hands-on, leading by example and raising the standard.Enhance the quality of product and content design — defining excellence and helping to achieve it.Be part of a talented design team driven by positive change.Contribute to a mission that empowers individuals and businesses to take control of their finances.About you:You are an experienced content designer with a track record of delivering complex, high-quality products.Your expertise in B2B environments has equipped you with a deep understanding of businesses of all sizes and their unique challenges.You thrive in complex and ambiguous situations, successfully guiding teams through them.You can navigate technical discussions with engineering, regulatory dialogues with compliance, and operational logistics with ease.You possess a keen eye for quality and know how to mentor designers and teams to achieve it.Your influence and inspiration drive others within a culture that values autonomy and empowerment.You foster effective partnerships across the organization, building strong relationships with peers.

About the Role:Brook Green Supply is an innovative energy provider located in the heart of London, operating a fully independent Microsoft 365 and Azure infrastructure. Our IT department is a dynamic, ownership-driven team responsible for managing the complete technology stack, encompassing everything from end-user support to cloud identity, device management, security, and ongoing infrastructure initiatives.As a Senior IT Systems Engineer (Level 2), you will serve as the primary technical resource within our team, taking charge of complex issues and directly overseeing platform administration across Azure/Entra ID, Exchange Online, Microsoft Intune, Defender, SharePoint, and Cloudflare DNS. You will play a pivotal role in mentoring our Level 1 analysts, spearheading automation improvements, and contributing to the continuous advancement of BGS's independent IT environment.This position is ideal for a technically adept engineer with substantial hands-on experience in M365 and Azure who thrives in an environment that values initiative and offers a broad scope of impact.

Who are we?At Cohere, our mission is to harness the power of artificial intelligence to enhance human capabilities. We are pioneers in developing and deploying advanced language models for developers and enterprises, enabling them to create transformative experiences such as content generation, semantic search, retrieval-augmented generation (RAG), and intelligent agents. We are committed to driving the widespread adoption of AI technologies.We take pride in our craftsmanship. Each team member plays a vital role in enhancing our models’ capabilities and delivering exceptional value to our clients. We thrive in a fast-paced environment where our focus is on what is best for our customers.Cohere is made up of a diverse group of researchers, engineers, designers, and other professionals, all dedicated to their craft. We believe that a variety of perspectives is essential for creating remarkable products.Join us on our journey and help shape the future of AI!We are seeking a seasoned engineer to contribute to the design, maintenance, and evolution of the training framework that underpins our state-of-the-art language models. This role is positioned at the crossroads of large-scale training, distributed systems, and high-performance computing (HPC) infrastructure. You will be responsible for architecting and managing core components that facilitate rapid, reliable, and scalable model training, as well as developing tools that connect innovative research ideas to thousands of GPUs.If you have a passion for working across the entire machine learning systems stack, this role offers you the opportunity and autonomy to make a substantial impact.What You’ll Work OnOwn and enhance the training framework for large-scale LLM training.Design distributed training abstractions including data/tensor/pipeline parallelism, FSDP/ZeRO strategies, memory management, and checkpointing.Optimize training throughput and stability on multi-node clusters (e.g., GB200/300, AMD, H200/100).Develop and maintain tools for monitoring, logging, debugging, and improving developer experience.Collaborate with infrastructure teams to ensure our clusters, container environments, and hardware configurations are optimized for high-performance training.Analyze and troubleshoot performance bottlenecks throughout the machine learning systems stack.Create robust systems that guarantee reproducible, debuggable, and large-scale training runs.You Might Be a Great Fit If You HaveExtensive engineering experience in large-scale distributed training or HPC systems.Deep familiarity with Java, Python, and/or C++ programming languages.Experience with cloud platforms and container orchestration tools.Strong problem-solving skills and a collaborative mindset.