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Experience Level
Mid to Senior
Qualifications
Essential Skills & Experience:Proven experience in full-stack software engineering, with a focus on designing, building, and maintaining modern applications. Hands-on expertise with a contemporary tech stack, including popular programming languages and cloud platforms. Strong understanding of modern software development methodologies, including Agile, DevOps, and CI/CD practices.
About the job
Join Our Team as a Senior Application Engineer / Developer
Are you passionate about crafting cutting-edge AI and cloud-native applications that leave users in awe? Are you eager to explore the frontiers of software delivery, AI engineering, and innovative application patterns? If you have a knack for developing intelligent applications that push the boundaries of technology, we want to hear from you!
In this dynamic role, you will be at the forefront of building AI-driven solutions, focusing on hands-on development to create applications that challenge the status quo.
Key Responsibilities:
Design, build, test, and deploy state-of-the-art applications.
Transform software delivery processes in the AI and cloud era.
Evaluate AI code generation for accuracy and functionality.
About Telefónica Tech
About Telefónica TechPart of the renowned Telefónica Group, Telefónica Tech stands as a leader in NextGen Tech solutions, boasting a diverse team of over 6,000 highly skilled professionals from more than 60 nationalities. We cater to over 5.5 million customers daily across 175 countries, supported by a robust ecosystem of top-tier partners. Our strategic hubs are located in Spain, Brazil, the UK, and Germany. The Telefónica Tech UK&I hub offers a comprehensive suite of cutting-edge services, driving digital transformation through Cloud, Data & AI, Enterprise Applications, Workplace Services, and Cyber Security & Networking. Our Core Values: Open, Bold, Trusted
Blockchain.com is at the forefront of revolutionizing finance, providing millions globally with secure access to cryptocurrency. Established in 2011, we have gained the trust of over 90 million wallet holders and more than 40 million verified users, facilitating over $1 trillion in crypto transactions.Blockchain is the world's premier software platform for d…
Join the Sustainability Wave with AMCS About Us:AMCS Group is a leading sustainability software provider headquartered in Ireland, with a strong presence across Europe, the USA, and Australasia. Our team of over 1,300 talented professionals spans 22 countries, dedicated to delivering innovative technology solutions that pave the way for a carbon-neutral future. Our Mission:We specialize in cutting-edge SaaS solutions that enhance efficiency and promote sustainability in resource-intensive sectors. With over 5,000 clients across 23 countries relying on our Performance Sustainability software, we are committed to providing practical solutions that drive profitability and environmental resilience worldwide.Our Culture:At AMCS, we offer more than just a job; we provide a career path with a forward-thinking company that values innovation and community impact. With our Irish roots, we maintain a 'start-up' mentality, fostering a culture of connection among our work, customers, colleagues, and the broader community. This environment encourages openness, collaboration, and creativity.We are currently seeking a motivated and skilled Application Support Engineer to join our rapidly expanding enterprise software team in Richmond, London. You will work on ECHO, our enterprise service management framework utilized by leading environmental service providers.Recently, Selected Interventions became part of AMCS, and we continue to enhance our market-leading ECHO™ Service Management Framework, previously known as the AMCS Platform for Municipalities. Our solutions support large multinational organizations throughout the UK and beyond.Located just moments from Richmond train, tube, and bus stations, our office is vibrant, friendly, and collaborative. We prioritize smart working, value work-life balance, and are passionate about leveraging technology to transform field service management.Key Responsibilities:Delivering 1st and 2nd line support for the ECHO application.Updating clients who have raised issues via our in-house ticketing system, phone, or email.Ensuring accurate categorization and resolution of all issues within our SLA.Escalating complex issues to 2nd and 3rd line support or other departments as needed.Troubleshooting and validating reported issues.
Full-time|Remote|Remote — London, England, United Kingdom
As a pivotal member of our team, the DevOps Engineer will be instrumental in the development and maintenance of blockchain networks and protocols. Your role will involve enhancing our existing infrastructure with a focus on security, automation, and monitoring. Additionally, you will have the opportunity to explore innovative blockchain protocols, manage testnets, and develop secure, scalable infrastructure.Key Responsibilities Design and implement secure, reliable infrastructure for monitoring, detecting, and resolving performance and security challenges. Perform system administration tasks on Linux servers, ensuring optimal health, stability, and availability of our systems. Create and maintain comprehensive procedural and technical documentation. Stay informed of the latest best practices in peer-to-peer networking security. Develop, maintain, and communicate threat models and risk assessments for all operational systems. What We Value in You Proven experience in DevOps, Site Reliability Engineering, or Infrastructure Engineering. Proficiency in programming languages such as Python, GoLang, Bash, or JavaScript. Experience managing server infrastructures with high availability needs. Background in designing secure network, system, and application architectures. Experience in deploying and maintaining software across both data center and cloud environments. Strong understanding of sockets, the full networking stack, and Linux security. Knowledge of automation and CI/CD processes and tools. Familiarity with Docker, Kubernetes, and other cloud deployment technologies. Ability to adapt, work collaboratively, and thrive in ambiguous situations. Preferred Qualifications Understanding of the blockchain ecosystem and related technologies. Knowledge of cryptography and security best practices. Contributions to open-source communities. If you resonate with these qualities, we encourage you to apply!Why Join Us?At stakefish, we are at the forefront of the cryptocurrency ecosystem, maintaining the infrastructure layer of blockchain networks. Our global team is diverse and united by a shared mission: to drive the future of decentralization. As pioneers in the field, we are dedicated to developing innovative tools and applications that support and secure blockchain technology.Additional Reasons to Consider Us: Our team comprises individuals from over 10 countries, bringing a wealth of perspectives and ideas. We foster a collaborative environment where innovation and creativity thrive.
Join our dynamic team at Blockchain as an Infrastructure Security Engineer. In this pivotal role, you will be responsible for designing, implementing, and maintaining robust security architectures to safeguard our cutting-edge blockchain technologies. Your expertise will be essential in identifying vulnerabilities, managing security incidents, and ensuring compliance with industry standards.We are looking for a passionate individual who thrives in a fast-paced environment and is eager to contribute to the future of decentralized technologies.
About Blockchain.com Blockchain.com connects people to the world of cryptocurrency. Since 2011, the company has supported over 90 million wallet holders and more than 40 million verified users, processing more than $1 trillion in transactions. Role Overview The Institutional team at Blockchain.com is looking for a Front-End Engineer based in London. This group focuses on building tools and experiences for institutional clients in the crypto space. What You Will Do Collaborate with colleagues to deliver front-end solutions for institutional products Contribute to a culture that values courage, productivity, and continuous improvement Work to optimize processes and deliver results that matter Grow your skills by learning from others and sharing knowledge What We Look For Strong interest in front-end engineering and digital assets Team player who values collaboration and learning Commitment to high standards and impactful work Based in London or willing to work from the London office
Blockchain.com is at the forefront of transforming the financial landscape. As the most reliable and rapidly expanding global cryptocurrency company, we empower millions worldwide to securely engage with digital assets. Since our inception in 2011, we have garnered the confidence of over 90 million wallet holders and more than 40 million verified users, facilitating transactions exceeding $1 trillion in cryptocurrency.Blockchain.com is the leading software platform for digital assets. We boast the largest production blockchain platform globally, driven by a shared passion for coding, innovation, and the pursuit of an inclusive and equitable financial future, one software solution at a time.We are currently in search of a skilled C++/Rust Quantitative Software Engineer/Developer. In this role, you will design, build, and optimize our electronic trading platform, collaborating closely with our traders to enhance our core trading infrastructure and high-throughput trading systems. Your expertise will be crucial in identifying and mitigating critical bottlenecks in both research and production trading.The ideal candidate will possess a robust understanding of low-level optimization, a keen interest in algorithmic trading, data analysis/design, risk management, and application development. You will gain valuable exposure to quantitative trading in our fast-paced, dynamic environment. You will have the opportunity to take full ownership of projects from inception to deployment. We expect you to be a proficient Rust/C++ engineer with hands-on experience in high-frequency trading and fast market connections.
Full-time|Remote|Remote — London, England, United Kingdom
Join stakefish as a Blockchain DevOps Engineer and play a pivotal role in developing and managing cutting-edge blockchain networks and protocols. You will enhance our existing infrastructure, focusing on security, automation, and monitoring while exploring new blockchain protocols, running testnets, and building robust and scalable infrastructure.Key Responsibilities: Develop secure and dependable infrastructure to identify, analyze, and resolve performance and security challenges. Conduct system administration for Linux servers, ensuring optimal health, stability, and availability. Produce and maintain comprehensive procedural and technical documentation. Stay informed and expand upon peer-to-peer networking security best practices. Establish, uphold, and communicate threat models and risk assessments for our operational systems. What We Value in You: Proven experience in a DevOps, SRE, or Infrastructure Engineering role. Proficiency in programming languages such as Python, GoLang, Bash, or JavaScript. Experience managing server infrastructures with high availability needs. Expertise in designing secure networks, systems, and application architectures. Experience setting up and maintaining software in both traditional data centers and cloud environments. In-depth knowledge of the networking stack, sockets, and Linux security. Experience in building automation and CI/CD processes and tools. Familiarity with Docker, Kubernetes, and other cloud deployment technologies. Ability to adapt, collaborate, and thrive in ambiguous situations, taking initiative to complete tasks. Desirable Qualifications: Understanding of blockchain technology and its applications. Knowledge of cryptography and security best practices. Contributions to open-source communities. If you resonate with these qualities, we invite you to apply and be part of our mission!Why Choose Us?At stakefish, we are a truly global team of digital nomads hailing from over 12 countries, working from locations of our choice. Our shared mission is to deliver significant value to users in the crypto space through our innovative services.
Blockchain.com is at the forefront of revolutionizing the financial landscape. As a leading global cryptocurrency platform, we empower millions to securely engage with digital assets. Since our launch in 2011, we have garnered the trust of over 90 million wallet holders and facilitated more than $1 trillion in crypto transactions.Blockchain.com is the premier software platform for digital assets, providing the world's most extensive production blockchain platform. Our mission is to drive innovation, foster creativity, and build a transparent and equitable financial future through cutting-edge software development.We are seeking talented software engineers from diverse technical backgrounds with a solid history of designing scalable, reliable, and high-performance systems. In this pivotal role as a Senior Back-End Engineer, you will lead technical discussions, influence strategic decisions, and contribute to the team's growth by championing exemplary engineering practices.
Join Kraken as a Software Engineer and play a pivotal role in developing our innovative Rust Blockchain Platform. You will work alongside a talented team of engineers to enhance the capabilities of our blockchain technology, ensuring its performance, security, and reliability. This is an exciting opportunity to contribute to a cutting-edge platform that is at the forefront of the crypto revolution.
Full-time|On-site|Aberdeen, Scotland, United Kingdom
Join Sword Group as an Applications Support Analyst where you will play a pivotal role in ensuring the smooth operation of our software applications. Your expertise will assist in troubleshooting issues, providing technical support, and collaborating with cross-functional teams to enhance user experience.
Join our team at Navantia UK as an Application Support Technician. In this role, you will be integral in ensuring our software applications run smoothly and efficiently. You will troubleshoot issues, provide user support, and collaborate with IT teams to enhance our systems. If you are passionate about technology and eager to contribute to a dynamic team, we want to hear from you!
Lead Blockchain Payments Engineer - Fiat Ramps & Financial InfrastructureJoin an elite team at the forefront of fintech and high-scale cryptocurrency infrastructure as a Lead Blockchain Payments Engineer. Based in London, this full-time, on-site role offers a competitive salary and the opportunity to work within a high-growth software organization known for its innovation and extreme talent density.The ideal candidate will be a core architect of our financial infrastructure, responsible for designing and scaling services that enable seamless fiat-to-crypto transactions, real-time risk decision-making, and immutable financial records. If you are passionate about building the future of global value transfer and thrive in high-throughput, low-latency environments, we want to hear from you!Key Responsibilities:Payment Orchestration & Integrations: Manage end-to-end orchestration for major banking and card networks, design fault-tolerant APIs, and oversee third-party integrations.Real-Time Risk & Compliance: Build a cutting-edge risk engine, implement foundational KYC/AML practices, and collaborate with compliance teams.Financial Integrity & Reconciliation: Architect a double-entry ledger and automated reconciliation processes to ensure financial accuracy.Blockchain & Wallet Operations: Oversee hot-wallet flows and operational safeguards for the secure delivery of crypto assets.Reliability & Instrumentation: Establish reliability standards and instrument financial flows with comprehensive metrics and logs.
Join our dynamic IT & Security team as an Application Support Technician at Navantia UK in Appledore! In this pivotal role, you will be responsible for providing top-notch support to our applications, ensuring seamless operations and user satisfaction. Your expertise will help maintain our software solutions, troubleshoot issues, and collaborate with various departments to enhance application functionality.
Join Genomics England as an Applications Support Manager in London, where you will play a pivotal role in ensuring the smooth operation and support of our critical applications. You will lead a dedicated team, providing expert guidance and troubleshooting to enhance user experience and maximize application performance.
We are seeking a dedicated and experienced Applications Support Manager to join our team at Genomics England. In this role, you will oversee the support of our applications, ensuring they meet the needs of our stakeholders and contribute to our mission of transforming healthcare through genomic data.
Galaxy Digital Services stands at the intersection of digital assets and data center infrastructure, building solutions for finance and artificial intelligence. The company’s institutional platform covers trading, investment banking, asset management, staking, self-custody, and tokenization technologies. Galaxy also invests in and operates advanced data centers to support AI and high-performance computing, focusing on scalable energy and computational resources in the U.S. Under CEO Michael Novogratz, the team brings together deep cryptocurrency knowledge and institutional experience. Offices span North America, Europe, the Middle East, and Asia, with headquarters in New York City. For more about their work, visit www.galaxy.com. Our values Pursue Excellence. Be Selective to Enhance Effectiveness. Stay Aligned While Being Independent. Express Disagreements Openly. Foster Independent Decision-Making. Assemble Exceptional Teams. Role overview The Production Support Engineer Associate role focuses on supporting mission-critical software systems for Galaxy Digital’s cryptocurrency business lines in London. This includes trading, risk, and settlement operations. The position is well suited for candidates with experience in financial services, though this is not required. What you will do Deliver client support for digital asset systems Troubleshoot and resolve complex technical issues Work closely with development teams to implement solutions Help ensure the stability and performance of trading and settlement platforms Requirements Experience in production support or a related technical field Background in financial services is preferred Strong problem-solving and communication skills
P2P.org is a leading institutional staking provider with a total value locked (TVL) of over $10 billion and more than 20% market share in the restaking sector. The team focuses on research and infrastructure development to maximize annual percentage returns (APR) and strengthen security. For example, average net return rates (NRR) at P2P.org exceed the market by 10% for ETH and SOL, and by 20% for DOT. P2P.org is launching new blockchain networks including TON, Avail, Monad, Babylon, Story, and Berachain, alongside yield products and aggregators for stablecoins. The company is the largest operator in restaking by market share. Clients such as BitGo, Copper, Crypto.com, Ledger, ByBit, Bitget, OKX, HTX, Bitvavo, and SBI trust P2P.org for its customer-focused approach and broad product suite, which includes unified APIs, customizable dApps, and widgets. The product portfolio is expanding to include real-world assets (RWA), data solutions, new yield opportunities, and services for banks, exchanges, custodians, and wallets. P2P.org brings together professionals from around the world. The remote team shares a commitment to decentralized finance and works to build a fairer financial system. Team members code, learn, create, and collaborate to shape the future of finance. The company has built a strong reputation and network, keeping customer satisfaction at the center while developing new technologies to advance its brand. Role Overview: Senior Site Reliability Engineer (SRE 3) P2P.org is hiring a Senior Site Reliability Engineer to join the Launch Team. This group is responsible for bringing new blockchain networks into production, from initial design through deployment, stability, observability, and production readiness. The SRE will work at the intersection of infrastructure, protocol engineering, and operations. The goal is to help P2P.org scale to support multiple networks with reliability. What You Will Do Design, build, and operate infrastructure for new blockchain networks Collaborate with protocol, infrastructure, and security teams Oversee network launches from start to finish Ensure solutions are reliable, repeatable, and meet platform standards Location This is a remote role based in the EU.
Join a dynamic software company at the forefront of innovation in manufacturing, supply chain, and distribution software. Founded only 5 years ago, our client has rapidly established a diverse and impressive clientele across sectors including logistics, manufacturing, warehouse management systems (WMS), automotive, and food.As they continue to grow, this is an exciting opportunity to be the 12th member of a dedicated team of 11 professionals. You will play a vital role in supporting our clients during this pivotal stage of the company’s journey.In this position, you will provide both 1st and 2nd line support, helping clients troubleshoot issues while analyzing challenges to determine the most effective solutions tailored to their needs.
About UsAt xLabs, we specialize in providing essential infrastructure and contributing to open-source technologies that empower the innovators of the Internet of Value. Our primary focus is on developing engineering tools and delivering resilient infrastructure that facilitates the seamless creation of decentralized applications. As key contributors to Wormhole, we are instrumental in constructing the backbone of the Internet of Value and actively participate in enhancing various major blockchains.About the RoleYou will thrive in distributed teams, emphasizing clear and consistent communication.Critical thinking is essential; you will analyze challenges and propose multiple solutions, ideally documented for clarity.Proactivity is key; you will take the initiative while prioritizing the team's success.Fluency in English, both spoken and written, is required.Experience with Infrastructure-as-Code and GitOps is necessary.You should be familiar with workload orchestration tools, such as Kubernetes.Understanding software design and distributed systems is crucial.Proficiency in at least one programming language is expected.Experience operating Blockchain RPC nodes and Validators, such as Ethereum, Solana, or similar platforms, is advantageous.What We DoWe manage the compute infrastructure and the applications that rely on it. Many applications, such as blockchains, are not developed by us. Therefore, we spend significant time reviewing documentation, code, Slack channels, and Discord servers to cultivate a thorough understanding of each application's architecture, optimal operating procedures, and debugging strategies when issues arise. Documenting our findings, including lessons learned from past mistakes and strategies to prevent future occurrences, is an integral part of our responsibilities.BenefitsFully remote team—ideal candidates are located in US, South America, and European time zones.Team culture that is collaborative, transparent, and supportive, where all contributions are highly valued.Flexible working hours that respect your independence and encourage self-motivation.Generous vacation policy that allows you to take the time necessary to recharge, with paid time off that honors work-life balance.
Join Our Team as a Senior Application Engineer / DeveloperAre you passionate about crafting cutting-edge AI and cloud-native applications that leave users in awe? Are you eager to explore the frontiers of software delivery, AI engineering, and innovative application patterns? If you have a knack for developing intelligent applications that push the boundaries of technology, we want to hear from you!In this dynamic role, you will be at the forefront of building AI-driven solutions, focusing on hands-on development to create applications that challenge the status quo.Key Responsibilities:Design, build, test, and deploy state-of-the-art applications.Transform software delivery processes in the AI and cloud era.Evaluate AI code generation for accuracy and functionality.
