Senior Technical Engineer Digital Workplace

MEET YUBICO Yubico is a global leader in identity security and creator of the YubiKey, the original hardware-backed passkey. We are publicly traded on Nasdaq Stockholm; our global footprint includes headquarters in Stockholm, Sweden, Silicon Valley, California; and Singapore. Why Join Our Mission? At Yubico, we are guided by a shared belief that your work matters. We operate under a cultural philosophy of Speed with Integrity, pushing the boundaries of technology to secure the AI frontier—protecting both human and agentic AI interactions—and leading the transition to post-quantum cryptography. In everything we do, we live by our core values: * Battle Friction: We constantly look for new ways to simplify our products, our work, and the user experience. * Inspire Higher: We think big, champion the open internet, and strive to do the right thing even when it is difficult. * One Team: We are open, responsive, and collaborative, overcoming challenges and celebrating our successes together. Aligned with our commitment to open standards, we foster a thriving builder ecosystem through the Yubico Developer Program, offering free open-source repositories, libraries, and SDKs to help developers rapidly integrate strong hardware authentication into any application. Through close collaborations with technical partners like Google, Microsoft, and Amazon, as well as newer frontiers like OpenAI, we continue to shape a safer digital world while donating security keys to protect vulnerable communities, journalists, and humanitarian groups worldwide through our Secure it Forward program. At Yubico, We Offer Yubico Values: We work to ensure that our employees have an open space to have their voices amplified to create a workplace where everyone feels like they belong. In support of this, our employees have created some pretty cool Employee Resource Groups that foster inclusion, help build community and connection across Yubico which all employees are welcome to join. Additionally, Yubico donates YubiKeys to organizations in need all over the world (you can read more about our work here). Social Connection: Relationships and connectedness matter, and we love spending time with our team! Our virtual workspace keeps us connected day-to-day whether it's through Yubico celebrating wins or our buzzing Slack communities. Check out our Life at Yubico Page on LinkedIn and our awards here. THE ROLE Yubico is looking for a Software Engineer to join the Platform team working on Yubikey as a Service. It is an Enterprise solution that customers use to manage the lifecycle of their credentials and YubiKey deployment at scale. You should have a passion for building the platform for Enterprise-grade applications. We are looking for a teammate who is proactive, works well within and across teams, and has a desire to do things right and learn. You will develop the platform to support products used by many top Enterprise companies and will get to see your work in use right away. Tasks and Responsibilities:  * Understand, enhance, maintain, and grow the platform that powers our services * Develop your skills in designing and developing a testable, scalable and globally-distributed set of services used by a variety of Enterprise customers * Work collaboratively across functions - Product Managers, Security, Infrastructure, UX designers, Support * Work with a variety of technologies and increase your experience in many areas, ranging from cloud platform services and REST design to data compliance and web security * Work collaboratively with a tight-knit, multi-national development team to create well-architected software * Participate in an on-call rotation and gain experience supporting business-critical Enterprise services BASIC QUALIFICATIONS * 6+ years of software development experience (or equivalent) * Experience building commercial software * Experience with back-end software development * Experience working with relational databases * Experience with one or more common web-backend languages such as (but not limited to) Java, Kotlin, Go, Python, JavaScript (Node.js), C#, Rust BONUS QUALIFICATIONS * Hands-on experience with Go and/or Java/Kotlin * Hands-on experience in one or more of the following technologies: Kubernetes, Docker, Redis * Experience with one of the three major cloud platforms * Authentication and authorization technologies, modern security practices   #LI-IR1 We are an equal opportunity employer, we value diversity and uphold an inclusive environment where all people feel that they are equally respected and valued. All applicants will be considered for employment without attention to race, color, religion, sex, sexual orientation, gender identity or expression, age, marital status, religion, national origin, disability, protected Veteran status or any other characteristic protected by law. We'd love to learn about what you can add to our diverse team. We are an E-Verify Participating Employer.   Yubico does not accept agency resumes or referrals so please do not send them to our careers staff or employees. Yubico is not responsible for any fees related to unsolicited resumes or referrals.   Personal data submitted through this form is used for managing Yubico’s recruitment activities, which include facilitating any application you make, setting up and conducting interviews and tests for applicants, evaluating and assessing results and selecting candidates, and as otherwise needed in our recruitment and onboarding processes. The use of your personal data may also be necessary prior to entering into a contract with you (that is prior to offering you a job with Yubico). Your personal data will only be used for the purposes for which it was collected and in accordance with the Yubico Privacy Notice. We only keep your personal data for as long as necessary and in compliance with Yubico’s record retention policies. If you have asked us to, we will keep you informed of other opportunities at Yubico. We do this in various ways, including email and by phone. If at any time you do not want us to contact you or use your information as described herein please contact us at jobs@yubico.com to let us know and we will delete all such information. Providing your personal data is voluntary, but necessary to join our talent community, and if you do not agree to provide your data, we will not be able to consider you as part of our talent community.   As part of providing the requested service, we will transfer your data to be processed by Greenhouse Software Inc., a service provider contracted by Yubico AB and/or its subsidiaries that meets legally mandated privacy requirements. The Yubico Privacy Notice offers more information about Yubico privacy practices, including the lawful basis for processing of personal data, how to lodge a complaint with the supervisory authority, and how to contact Yubico to exercise your data subject rights. In this notice, when we refer to "Yubico", "us", "we" or "our", we mean the Yubico group company or companies that you apply to, or correspond with, and which are responsible for any personal data collected about you.

WHAT WE DO AT BLYKALLA Blykalla is a Swedish deep-tech company at the forefront of the nuclear industry, pioneering the development of small modular reactors that provide clean, safe, and reliable energy. Thanks to lead-cooling, we achieve high safety in a very compact format, allowing for a simple and cost-effective design that can be mass-produced. Our unique reactor design will provide safe and green baseload energy that perfectly complements solar and wind power. WHAT YOU’LL GET TO DO We are seeking a Senior Control Systems Engineer with deep expertise in ABB 800xA DCS to lead the development of Blykalla's plant control system architecture and implementation strategy. This is a unique opportunity to help define the control philosophy of a first-of-a-kind advanced nuclear reactor. You will play a key role in ensuring that Blykalla develops and retains ownership of critical control system intellectual property while working closely with ABB and other suppliers. KEY RESPONSIBILITIES DCS Architecture & Ownership * Lead the design and development of Blykalla's plant-wide automation and control system architecture. * Define the ABB 800xA system architecture for reactor, balance-of-plant, auxiliary, and test facility applications. * Develop internal engineering standards, libraries, templates, and control strategies to maximize in-house ownership of intellectual property. * Establish long-term governance for control system design, lifecycle management, cybersecurity, and configuration control. Control System Engineering * Develop functional specifications, control narratives, cause-and-effect matrices, and automation philosophies. * Design and implement control logic, sequences, interlocks, alarms, and operator interfaces. * Configure ABB 800xA applications, controllers, engineering environments, and HMI systems. * Define communication architectures including OPC UA, IEC 61850, Modbus, Profibus/Profinet, Ethernet/IP, and other industrial protocols. * Develop and maintain simulation and testing environments for control system validation. Nuclear Plant Integration * Support the integration of reactor systems, safety systems, and balance-of-plant equipment into the overall control architecture. * Work closely with reactor, thermal-hydraulic, electrical, mechanical, and safety engineers to define system requirements. * Contribute to licensing and regulatory documentation related to instrumentation and control systems. * Support development of digital I&C architectures aligned with nuclear industry expectations and international standards. Vendor & Stakeholder Management * Act as the primary technical interface with ABB regarding 800xA architecture, licensing, engineering tools, and implementation support. * Ensure that Blykalla retains ownership of application software, engineering databases, configuration standards, and control strategies. * Manage external engineering partners and system integrators where required. * Participate in factory acceptance tests (FAT), site acceptance tests (SAT), commissioning, and startup activities. Verification & Validation * Develop testing methodologies for control logic verification and system validation. * Lead integration testing and commissioning activities. * Support development of digital twins and operator training simulators. * Ensure traceability from requirements through implementation and testing. WHO YOU’LL GET TO WORK WITH The Senior Control Systems Engineer sits in the Plant engineering Team within Blykalla. We are a diverse team that is passionate about our work and Blykalla.  WHO YOU ARE You will be part of a highly skilled team with a can-do attitude. We value personnel chemistry and strive to create a workplace where you enjoy coming to. There are however a few things that we think will help in order for you to succeed in this role, these are: * MSc or BSc in Control Engineering, Electrical Engineering, Automation Engineering, Nuclear Engineering, or related discipline. * Minimum 10 years of experience in industrial automation and control systems engineering. * Extensive hands-on experience with ABB 800xA DCS engineering, configuration, commissioning, and lifecycle management. * Proven experience designing and implementing large-scale DCS architectures. * Experience developing control strategies for complex industrial facilities. * Strong understanding of industrial networks, field instrumentation, and process control. * Fluent in English, spoken and written * Fluency in Swedish is a plus Technical Skills * Expert-level knowledge of ABB 800xA: * AC 800M controllers * Control Builder * Aspect Objects * System 800xA Engineering * Operator Workplace * Alarm Management * Batch and Advanced Process Control (desirable) * Strong understanding of: * ISA-88 * ISA-95 * IEC 61511 * IEC 61508 * Industrial cybersecurity principles * Configuration management and software lifecycle practices * Experience with simulation and testing environments. Location  This position is for our office in Stockholm. So, what do you think? Don't miss the chance to be at the forefront of revolutionizing nuclear power. Join our team as and help shape the energy landscape of tomorrow. Apply today with your resume and a cover letter highlighting your relevant experience and achievements. We are proud to foster an inclusive workplace free from discrimination. We strongly believe that diversity of experience, perspectives, and background will lead to a better environment for our employees and a better product. This is something we value deeply, and we encourage everyone to be a part of changing the way the world thinks about power supply! Reference & Background Checks As part of our recruitment process, we conduct background checks on all candidates. We may also conduct reference checks to gain a well-rounded understanding of your professional experience, performance, and ways of working. This includes both references provided by you and, where relevant, conversations with other professional contacts who have worked closely with you. We strive to be transparent about our reference-checking process and handle all personal data in accordance with applicable data protection regulations. Any additional references will be sought with professional judgment and only when considered relevant to the role. We offer competitive compensation aligned with our internal salary framework and growth potential in the role. We do not accept applications via email.  We are not open to external help from recruitment agencies.   Note on AI Use: Blykalla may use AI technology to assist with certain administrative aspects of the hiring process, such as note-taking, interview documentation, and reporting. However, every resume and application is reviewed directly by our recruiting team. AI tools are used solely for operational support and do not influence candidate evaluation or hiring decisions.