Software Engineer - Sharding

Copper

Since being founded in 2018, Copper has been building the standard for institutional digital asset infrastructure with a focus on custody, collateral management, and prime services. Led by Amar Kuchinad, Copper's Global CEO, the firm provides a comprehensive suite of custody, trading and settlement solutions that reduce counterparty risk and bring greater capital and operational efficiency to digital asset markets. At the heart of Copper's offering is Multi-Party Computation (MPC) technology – the gold standard in secure custody. Copper’s multi-award winning custody system is unique in that it can be connected to centralised exchanges, DeFi applications and even staking pools without the assets leaving the custody. Built on top of this state-of-the-art custody, ClearLoop is the first solution in the market that overcomes a growing industry challenge; counterparty risk with exchanges. This solution underpins a full prime services offering, connecting global exchanges, and enabling customers to trade and settle directly from the safety of their MPC-secured wallets. By reducing settlement time for transfers to a few milliseconds (without blockchain network dependency) and offering enhanced security measures, ClearLoop is rapidly reshaping the way asset managers trade and manage capital. In addition to industry-leading security certifications, Copper has one of the strongest insurance coverages in the industry from an A+ rated insurer, positioning the firm as the partner of choice for institutions seeking to safeguard their assets. Department/Team Purpose:   The Engineering department is the backbone of Copper; entrusted with the critical responsibility of building and securing the infrastructure that safeguards billions of dollars in digital assets. We operate at the intersection of traditional institutional finance and decentralized blockchain technology.  We believe the best infrastructure comes from curious minds working openly together. Our engineering organisation brings together people with diverse backgrounds and experiences who genuinely enjoy solving hard problems. We foster a blame-free, intellectually honest environment where you're encouraged to take thoughtful risks and think big. You'll have the autonomy to own meaningful projects while gaining the support you need to grow your skills and advance your career.  Role Purpose:   We’re looking for a Senior DevOps engineer at the intersection of software development and platform engineering. In this role, your focus will be enabling fast, reliable, and secure delivery of our systems, whilst continuously improving how our infrastructure is built and operated, including our blockchain environments.  Day-to-day, you’ll tackle platform and deployment challenges through pragmatic engineering and automation. You’ll build and operate scalable, self-service infrastructure, CI/CD pipelines, and blockchain platforms, including node provisioning, network deployment, and lifecycle management. You’ll optimise build and release pipelines, improve system resilience, and ensure ‘traditional’ and blockchain infrastructure can scale with the needs of the business.  You will collaborate closely with engineering and SRE teams, focusing on infrastructure as code, developer experience, and operational scalability across the engineering organisation, with ownership of the reliability and performance of blockchain nodes and supporting systems.  Key Responsibilities:    * Building a fault-tolerant, geographically distributed infrastructure: support of multiple data centres, providing replication, sharding, auto balancing and failover.  * Participating in deployment of services with strict availability requirements on a large-scale environment and working together with other Engineers to ensure our systems meet current and future demand.  * Develop and maintain code for automated infrastructure management (DevOps, Infrastructure as Code) with the use of Ansible and Terraform.  * Working collaboratively with the Backend Engineering team to increase our resilience through insightful systems and application metrics.  * Improving our CI/CD pipeline to provide new integration vectors. Building and maintaining infrastructure for its own fleet of blockchain nodes (>25 layer 1 protocols now, and more to come)  * On-Call support to ensure 24/7 availability of all systems.   Skills and Experience:   Essential    * 5+ year's experience as a DevOps Engineer operating production-grade infrastructure.  * Hands-on experience running and maintaining blockchain infrastructure (e.g. node deployment, syncing, upgrades, monitoring, and troubleshooting).  * Strong experience with Infrastructure as Code (e.g. Terraform, CloudFormation) and automated environment provisioning.  * Strong experience with containerisation and Kubernetes, including production operations and cluster management; EKS preferred.  * Experience building and operating CI/CD pipelines using GitHub Actions and deployment tools such as ArgoCD.  * Solid understanding of networking fundamentals (VPCs, routing, load balancing, DNS, firewalls).  * Experience implementing and operating secure systems (IAM, secrets management, network security controls, vulnerability management).  * Proficiency with at least one development language (e.g., bash, Python, Go).  * Strong troubleshooting skills across distributed systems and production environments.  * Strong problem-solving and troubleshooting abilities.  * Excellent communication and collaboration abilities.  Desirable    * Experience working within crypto organisation  * Experience in Financial Services   Why Copper?    At Copper, we keep innovation, openness, and curiosity at the centre of everything we do. Here, bold ideas get the spotlight, learning is constant, and diversity shapes our team from the ground up.  Jump into a fast-moving, dynamic team that loves a challenge and knows how to have fun along the way. Collaboration is just as important as results—you’ll be surrounded by smart, driven colleagues in London and across our APAC, Switzerland, UAE, and US offices.  Hybrid working model – we believe in the value of bringing people together and at the same time we embrace the adaptability of flexibly working.  Diversity and inclusion matter to us – they’re woven into Copper life. From employee-led groups like Women at Copper to a committee focused on community and wellbeing, you’ll have a network that supports you from day one. Everyone voice matters.   If you’re looking to ramp up your career, or keen to do something new in your field, with us, you’ll keep moving forward.  Ready to make your mark, keep growing, and join a supportive, dynamic team? Copper’s the place.  The interview process at Copper    Our interview process is designed to be thoughtful, efficient, and engaging. While specific steps may vary slightly depending on the role, the typical journey includes:  1. Initial Screening A brief conversation with our Talent Acquisition team to explore your background, motivations, and alignment with the role.  1. Technical Interview A virtual session conducted via Microsoft Teams, where you'll engage with team members to discuss relevant skills, problem-solving approaches, and technical experience.  1. In-Person Interview A conversation focused on team dynamics, collaboration style, and any final technical questions. This may be with cross-functional peers or leadership.  Additional steps may be added based on the role's complexity or seniority. We aim to keep the process transparent and respectful of your time.  Benefits   In return for everything you can bring to Copper, we can offer you an exciting, challenging role in a fast-growing and dynamic business, with career opportunities and welcoming working environment. Some of our key UK benefits are highlighted below:   * Paid Time Off - A minimum of 35 days of paid time off per year, inclusive of annual leave and public holidays. Employees also receive one additional day of annual leave for each year of service.  * Comprehensive Medical Insurance - Inclusive of dental, optical, audiology, and mental health coverage, with medical history disregarded  * Life Insurance  * Enhanced Pension Contributions - Includes an enhanced employer matching contribution  * 24/7 Employee Assistance Programme (EAP)  If you think you have everything we're looking for and more, then we'd love you to apply for the opportunity.   Copper is an equal opportunity employer. We embrace diversity and equal opportunities in a serious way. We are committed to building a team that represents a variety of backgrounds, perspectives, and skills. The more inclusive we are, the better our work will be. So, bring us your experience, perspectives, and skills. It is in our differences that we will continue to grow and ensure Copper is transforming how institutional investors engage with digital assets. Copper is a Disability Confident Employer, please let us know if you have a disability. If you require us to provide any assistance during the recruitment process, then we would ask you to highlight this to us and we will be happy to accommodate.

Eraneos

DAS FINDEST DU BEI UNS Wir sind ein dynamisches Cloud- und Data-Engineering-Team und suchen gleichgesinnte, motivierte Tech-Entwickler. Wir legen großen Wert auf Eigenverantwortung und geschäftliche Ergebnisse.   Als Analytics-Abteilung einer globalen Unternehmensberatung setzen wir datengestützte Strategien in Produktionssysteme um. Zu unseren Kunden zählen führende DAX- und Fortune-Global-500-Unternehmen, die auf unsere Expertise in den Bereichen Datenplattformen, Big Data und Cloud-Engineering vertrauen.  Sie werden Teil eines internationalen Umfelds mit agilen Teams und einer Boutique-Atmosphäre, das Raum für Experimente und Wachstum bietet, gepaart mit einer überdurchschnittlichen Vergütung und attraktiven Sozialleistungen. Ihre Aufgaben als Teil unseres Cloud- und Data-Engineering-Teams:  * Übernahme der Gesamtverantwortung für Projekte: vom Projektumfang über die Abstimmung mit den Stakeholdern bis hin zur Erzielung messbarer Ergebnisse * Entwurf von Datenarchitekturen für Batch- und Streaming-Workloads, sowohl im Small- als auch im Big-Data-Maßstab * Bereitstellung und Verwaltung der zugrunde liegenden Cloud-Infrastruktur zur Unterstützung dieser Architekturen bei Anbietern wie AWS, Azure oder GCP * Erstellen von Python-ETL/ELT-Pipelines, orchestriert mit Airflow, Dagster oder Prefect * Arbeiten mit Data-Lake-Technologien und Optimieren von (OLAP-)Data-Ware-/Lakehouses * Modellieren und Speichern von Daten in SQL- und NoSQL-Datenbanken sowie Optimieren von Leistung und Kosten * Erstellen von Web-APIs mit gängigen Python-Frameworks (z. B. FastAPI und Flask) und deren Beschreibung unter Verwendung von Standards wie OpenAPI/Swagger * Automatisieren von Deployments mithilfe von Infrastructure-as-Code und Container-Technologien wie Docker, Kubernetes oder OpenShift DAS BIST DU * Ein leidenschaftlicher Data Engineer, der es liebt, an der Spitze moderner, KI-gesteuerter Technologien zu stehen, dem aber auch die technische Handwerkskunst am Herzen liegt * Mindestens 2 Jahre praktische Erfahrung mit einem Cloud-Hyperscaler (vorzugsweise AWS, Azure oder GCP) * Vorzugsweise mindestens 3 Jahre Erfahrung in der Entwicklung von produktionsreifer Software * Ein erfahrener Python-Entwickler, der idiomatischen und gründlich getesteten Code schreibt * Erfahrung in der Leistungsoptimierung und Optimierung relationaler Datenbanken (z. B. durch Indizierung, Sharding oder Partitionierung) * Erfahrung mit Tools zur Orchestrierung von Daten-Workflows (z. B. Apache Airflow, Dagster oder Prefect) * Kompetenz in der Verarbeitung großer Datenmengen und mit modernen Analytics-Stacks (z. B. Apache Spark, Snowflake, dbt oder ähnlichen Technologien) * Sicher im Umgang mit Containerisierung und Container-Orchestrierung (z. B. Docker, Kubernetes oder ähnliche Technologien) * Ein klarer, selbstbewusster Kommunikator in Deutsch und Englisch, der als Vermittler zwischen Business und Technik fungieren kann * Kundenorientiert, ergebnisorientiert und bereit, gelegentlich zu Kunden zu reisen DAS SIND WIR * Bei uns findest Du eine abwechslungsreiche Tätigkeit im KI-Umfeld * Flexible Arbeitszeiten und -orte wie Home-Office sind für uns selbstverständlich * Duz-Kultur, kurze Kommunikationswege und viele tolle, erfahrene, internationale Kollegen, die Dir jederzeit zur Seite stehen  * Unternehmensweite, internationale Events, die sich sehen lassen können * Company Bike und Bezuschussung Deiner Fitnessmitgliedschaft (EGYM Wellpass) * Gezielte und individuelle Trainings für Deine fachliche und persönliche Weiterentwicklung * Eine zentrale Lage in Hamburgs, Münchens, und Düsseldorfs Innenstadt mit guter Verkehrsanbindung (Bus & Bahn), sowie Hub-Standorte in allen deutschen Großstädten * Täglich frisches Obst, guten Kaffee, Snacks, Softdrinks & Feierabendbier   Wir haben Dein Interesse geweckt? Dann freuen wir uns über Deine Bewerbung! SO ERREICHST DU UNS Ekaterina Korolkova – career.de@eraneos.com – +49 40 809 081-172 Unsere oberste Priorität ist, dass Du zu uns passt und wir zu Dir, unabhängig von Herkunft, Nationalität, sexueller Orientierung, Religion, Geschlechtsidentität, Alter, Handicap oder anderen Aspekten der Vielfalt. Bewerbe Dich gerne über unser Unternehmensportal mit Deinem CV und / oder Deinem aktualisierten Xing bzw. LinkedIn Profil. Interessiert es dich, was unsere Mitarbeitenden und andere Bewerber/innen über uns sagen? Besuche uns auf Kununu und folge uns auf Social Media, um die aktuellsten News über uns nicht zu verpassen. Eraneos Germany als Arbeitgeber: Gehalt, Karriere, Benefits (kununu.com)

Qliro AB

What we do at Qliro At Qliro we deliver safe and simple payments. We are a dedicated partner to our merchants who serve their customers every day. We believe that if our merchants grow, we grow. We are a company of dedicated, friendly and highly competent people that together have redefined what Qliro and payments can be. We are now on a journey of scaling our business both here in Sweden and the Nordics. What we are looking for We are opening a Software Engineer position in our Checkout team, responsible for building and evolving checkout solutions for our merchants, while ensuring a safe and simple payment experience for their customers. You will join a full‑stack team that values innovation, collaboration, and having fun at work. Our tech stack includes: ✅ React, Redux, C# (.NET 8/10) ✅ AWS, SQL, DynamoDB, Terraform ✅ Observability with Grafana and Kibana ✅ AI development with Claude You can expect to: Work on a variety of exciting payment‑related projects, processing millions in SEK every day for thousands of customers, with a strong focus on usability, scalability, and security. Use technologies such as .NET, React, Redux, AWS, GitLab, Terraform, and more. Work with modern, AI‑assisted development tools such as Claude to improve productivity, code quality, and collaboration. Contribute throughout the entire product lifecycle: design, implementation, testing, release, and maintenance. Take part in architectural discussions and drive technical improvements. Collaborate continuously: we strongly believe in teamwork, thoughtful code reviews and shared ownership. Learn continuously, both on the job and through our learning platform, and share knowledge with your colleagues. Have fun while working in a fast‑growing area and organisation. What we are looking for: You are an experienced software engineer who takes ownership, drives initiatives, collaborates closely with stakeholders, and actively contributes to architectural discussions and technical decision‑making. You have experience with our tech stack or similar technologies and are confident working across both frontend and backend. You are curious and pragmatic about AI, and enjoy exploring how tools like Claude can be used to support better engineering practices and decision‑making. You value knowledge sharing and see learning and helping each other grow as a natural part of teamwork. You are willing to participate in the team’s on‑call rotation (with extra compensation). Experience from financial institutions, payments, or e‑commerce, whether technical or non‑technical, is a strong advantage. You communicate fluently and confidently in English, both verbally and in writing. Swedish is not a prerequisite. WOW in everything we do Qliro is the place for those who are curious, passionate, and love collaboration. Together, we create wow in everything we do. We want you to feel comfortable being yourself and bringing your unique perspectives. At Qliro, there is a place for you, whoever you are. We believe differences make us stronger. We value flexibility and remote work, while also believing in the power of meeting in real life. With a mix of remote work and office collaboration, we aim to create a flexible workplace that works for both you and Qliro. Does this sound like your next role? What are you waiting for - apply now!  Qliro is an equal opportunity employer. All qualified applicants will be considered for employment without regard to gender, gender identity or expression, national origin, religion or other beliefs, disability, sexual orientation or age.