Staff React/React Native Engineer

Payhawk

Company Mission Payhawk is a leading global spend management solution for scaling businesses. Headquartered in London and combining company cards, reimbursable expenses and accounts payable into a single product; its future-facing technology enables finance teams to control and automate company spending at scale. The Payhawk customer base includes fast-growing and mature multinational companies in 32 countries including LuxAir and Wagestream. With offices in New York, London, Berlin, Munich , Barcelona, Paris, Amsterdam, Vilnius and Sofia; Payhawk is backed by renowned investors such as Lightspeed Venture Partners, Greenoaks, QED Investors, Bek Ventures and Eleven Ventures. Our values include supporting flat hierarchies, taking ownership and responsibility, seeking and providing feedback, managing constructive critique, and speaking our minds. We understand that the best ideas don’t all come from the same place, so we encourage diversity and inclusion in all areas of our work. The future of fintech is about more than money, and we believe in work-life balance, continual learning, and empowered teams. We’re also on a journey to measure and improve our environmental and social impact. From virtual cards to digital subscriptions, our software and automation help take paper out of the equation for our customers, too. We’re changing the world of payments, and we’re looking for an exceptional team to help us.    About the Role To achieve our visionary goals, we are scaling up our robust engineering team and looking for a Full Stack Software Engineer to meet the compelling challenges we face. Our product consists of many services that are not limited to a single technology so it’s important that you are technology agnostic and eager to learn new stuff. You’ll be responsible for delivering entire, highly complex features to production. As part of a team of talented and highly experienced individuals, you’ll have the opportunity to shape everything. Our goal is to produce the best solution for our customers. Being part of the Payhawk team means that you’ll be developing a world-class product in the fast-growing fintech industry. We deliver an exceptional solution, and to continue doing so, we seek out the top 1% engineering talent.  Responsibilities * Lead the build of new product features and maintain existing ones by driving impactful engineering initiatives and owning end-to-end delivery. * Participate in the full software development lifecycle, including frontend, backend, testing, deployment, and LLM-based functionalities where applicable, while contributing to the architecture and proposing scalable, sustainable solutions. * Collaborate with product managers and designers to capture requirements and gain a strong business perspective on the features being implemented. * Break down complex, ambiguous problems into well-scoped and clearly defined tasks, ensuring alignment with product and technical goals. * Write scalable, high-performance, and maintainable code, ensuring testability, coverage, continuous integration, and backward compatibility. * Own feature delivery from discovery through deployment and monitoring, proactively addressing blockers and risks with minimal supervision. * Mentor and support other engineers through knowledge sharing, constructive feedback, and code reviews. * Collaborate across teams to remove dependencies, foster alignment, and ensure the team’s work fits into the broader technical direction. Requirements * Advanced programming experience and superior knowledge of programming languages and technologies: Node.js, TypeScript, PostgreSQL, Kubernetes, Docker, Google Cloud, React, React Native, Apache Kafka. * Bachelor's degree in Computer Science (or related field). * 6+ years of relevant work experience. * Experience with agile processes, continuous delivery, and continuous integration. * Ability to multitask, organize, and prioritize work. * Exceptional integrity and work ethic. * Nice to have: Experience working with LLMs, AI-driven architectures, and autonomous agents, including vector databases, embedding models, and MLOps practices.   Company Benefits * Competitive compensation package based on experience * 30 days holiday paid leave * One week exchange policy to another Payhawk office (London, Berlin, Barcelona, Paris, Amsterdam and Vilnius) * Flexible working hours and opportunity to work from home  * Regular team-wide events * Additional medical care  * MultiSport card fully funded by us * Company office massages * Personal assistant service * Opportunity to use the Payhawk product (that is, essentially, built by you)

Payhawk

Company Mission Payhawk is a leading global spend management solution for scaling businesses. Headquartered in London and combining company cards, reimbursable expenses and accounts payable into a single product; its future-facing technology enables finance teams to control and automate company spending at scale. The Payhawk customer base includes fast-growing and mature multinational companies in 32 countries including LuxAir and Wagestream. With offices in New York, London, Berlin, Munich , Barcelona, Paris, Amsterdam, Vilnius and Sofia; Payhawk is backed by renowned investors such as Lightspeed Venture Partners, Greenoaks, QED Investors, Bek Ventures and Eleven Ventures. Our values include supporting flat hierarchies, taking ownership and responsibility, seeking and providing feedback, managing constructive critique, and speaking our minds. We understand that the best ideas don’t all come from the same place, so we encourage diversity and inclusion in all areas of our work. The future of fintech is about more than money, and we believe in work-life balance, continual learning, and empowered teams. We’re also on a journey to measure and improve our environmental and social impact. From virtual cards to digital subscriptions, our software and automation help take paper out of the equation for our customers, too. We’re changing the world of payments, and we’re looking for an exceptional team to help us.    About the Role To achieve our visionary goals, we are scaling up our robust engineering team and looking for a Full Stack Software Engineer to meet the compelling challenges we face. Our product consists of many services that are not limited to a single technology so it’s important that you are technology agnostic and eager to learn new stuff. You’ll be responsible for delivering entire, highly complex features to production. As part of a team of talented and highly experienced individuals, you’ll have the opportunity to shape everything. Our goal is to produce the best solution for our customers.  Being part of the Payhawk team means that you’ll be developing a world-class product in the fast-growing fintech industry. We deliver an exceptional solution, and to continue doing so, we seek out the top 1% engineering talent. Responsibilities * Contribute to the implementation of new features and resolution of bugs in the domain area, ensuring high-quality, maintainable code that aligns with team standards. * Participate in the complete product development lifecycle, including planning, implementation, code reviews, testing, deployments, and post-release support. * Write modular, clean, and testable code that avoids language or structure-related mistakes. Apply appropriate testing strategies (unit, integration, e2e tests) to ensure strong coverage and reliability. * Take ownership of well-defined tasks, work autonomously, and proactively seek input when facing uncertainty, ensuring clarity on scope and edge cases before starting. * Collaborate effectively with product managers, designers, and engineers to understand problems, evaluate trade-offs, and deliver solutions that support business goals. * Review pull requests constructively, communicate clearly about your work, and proactively share updates, blockers, or risks. * Develop a strong understanding of the domain and broader system context to contribute to accurate estimations and high-quality delivery. Requirements * Advanced programming experience and superior knowledge of programming languages and technologies: Node.js, TypeScript, PostgreSQL, Kubernetes, Docker, Google Cloud, React, React Native, Apache Kafka. * Bachelor's degree in Computer Science (or related field). * 3+ years of relevant work experience. * Experience with agile processes, continuous delivery, and continuous integration. * Ability to multitask, organize, and prioritize work. * Exceptional integrity and work ethic. * Nice to have: Experience working with LLMs, AI-driven architectures, and autonomous agents, including vector databases, embedding models, and MLOps practices. Company Benefits * Competitive compensation package based on experience * 30 days holiday paid leave * One week exchange policy to another Payhawk office (London, Berlin, Barcelona, Paris, Amsterdam and Vilnius) * Flexible working hours and opportunity to work from home  * Regular team-wide events * Additional medical care  * MultiSport card fully funded by us * Company office massages * Personal assistant service * Opportunity to use the Payhawk product (that is, essentially, built by you)

Trading 212

OUR MISSION IS TO ENABLE EVERYONE TO BUILD WEALTH We reinvent how trading and investing work by creating exceptional products people love. Fostering a culture of excellence and high velocity is the key to our success. Today, we serve over 6 million clients, with more than €38 billion in assets under management, a testament to the scale and trust we’ve built in just a few years. Our platform is powered by a modern, high-performance engineering stack designed for scale and reliability: Java 21 (Spring), Go, Node.js (TypeScript), PostgreSQL, MariaDB, Redis, Kafka, ClickHouse, Elasticsearch, Docker, Grafana, AWS, k8s, Kibana. We offer remote or hybrid working, depending on role, with flexibility balanced against team performance and collaboration needs. We also provide an attractive benefits package, which may vary depending on your location. Full details will be shared during the initial screening, and we encourage you to come prepared with any questions. WHAT YOU’LL DO * Lead the technical development of an entire business domain. Engage in forming requirements, design the architecture, and lead the entire software development life cycle. * Lead a compact, autonomous, cross-functional team with short release cycles - we rely on agile, independent teams of sharp and driven people with just the right amount of processes to steer off anarchy and not sacrifice velocity. Find the most valuable strengths of your teammates and provide them with mentorship in order to develop them further. * Develop solutions by taking a holistic approach to problem-solving - we expect you to understand the business problems, our service architecture and the underlying technologies and infrastructure and take everything into consideration. * Develop for performance, scale and resilience – your code will run in an uncompromising environment. Downtime, latency and data loss are intolerable. * Take initiative to identify areas of product improvement. WHAT YOU NEED TO HAVE * Experience in leading the development and subsequent release of a complex/high-demand client-facing product. * Experience in leading, coaching, and mentoring software engineers towards delivering high-quality software together with them. * Experience with developing services in a microservice architecture.  * Advanced knowledge of at least two programming languages. * Deep understanding of RDBMS, messaging brokers and in-memory data storages. ALL APPLICANTS WILL BE CONTACTED, REGARDLESS OF WHETHER THEY ARE SELECTED! Are you ready to accelerate your career with us? We'd love to hear from you! We process applicant data confidentially and in accordance with applicable data protection laws. We may use AI-powered tools to help review applications, but all hiring decisions are made by our human recruitment team. Where required by law, we rely on your consent to use these tools. You may withdraw this consent or exercise your data protection rights at any time by contacting us.