Senior Test Design Engineer

Welcome! Our Growth is Creating Great Opportunities! Our team is expanding, and we want to hire the most talented people we can. Continued success depends on it! Once you've had a chance to explore our current open positions, apply to the ones you feel suit you best and keep track of both your progress in the selection process, and new postings that might interest you! Thanks for your interest in working on our team! We are currently looking for a highly motivated Senior Software Design Engineer to join our Global New Product Introduction (NPI) team. The position will be based at our York office and will be part of a team responsible for developing the software architecture, frameworks, and infrastructure that enable product validation across Adtran products. This is a software engineering role focused on designing and delivering the systems, tools, and services that support product validation, test automation, and engineering productivity. While working closely with test engineers and development teams, the primary focus of the role is the design and implementation of software architectures, platforms, infrastructure, and data-driven engineering solutions. It is a diverse and technically varied position, offering opportunities to work across software architecture, databases, server infrastructure, automation frameworks, networking, and emerging AI-driven engineering solutions. As a Senior Software Design Engineer, you will act as a technical authority within your area of expertise, applying broad technical knowledge and sound engineering judgement to solve complex problems, guide architectural decisions, and contribute to the successful delivery of key projects. The role requires significant experience in designing and delivering complex software systems, from architecture and solution design through implementation, integration, deployment, and long-term support. You will provide technical leadership across projects while remaining hands-on in the design and development of the software frameworks, infrastructure, and services that support efficient product verification and delivery. Key Responsibilities Design, develop, and maintain software architectures, frameworks, and infrastructure that support the validation of current and future Adtran products. Collaborate with software engineers on the design and development of software solutions, contributing to architectural decisions and the implementation of scalable, maintainable, and reliable systems that support long-term product strategy. Work closely with test engineers to standardise and optimise validation methodologies, automate processes, and consolidate test sequences across multiple product lines. Improve the quality, consistency, and structure of engineering and test data to enable AI-driven analysis, improved fault diagnosis, increased automation, and reduced product test times. Contribute to software engineering best practices, including architecture reviews, code reviews, automated testing, and continuous integration. Lead or contribute to the development of advanced software applications, tools, and services that enhance engineering productivity and product quality. Take technical ownership of server-based systems and services supporting the validation environment, including responsibility for database architecture, data management, data synchronisation, data integrity, and associated infrastructure. Develop, maintain, and support solutions for network configuration, data synchronisation, database operations, web services, and other engineering platforms. Provide technical leadership and guidance on software design, architecture, and engineering best practices, working collaboratively with engineers across multiple disciplines and sites. Support the investigation and resolution of issues within manufacturing and test environments, including occasional involvement in the diagnosis of test system hardware failures. Knowledge, skills and experience required Extensive professional experience in software engineering, including the design, development, and delivery of complex software systems. Demonstrated experience defining software architectures, evaluating technical solutions, and making design decisions that support long-term business and engineering goals. Strong technical expertise with the ability to independently design and implement software architectures, frameworks, web services, data models, and database solutions. Experience developing and supporting software solutions that utilise relational databases and data-driven architectures. Experience developing and supporting software solutions within both Windows- and Linux-based environments. Proficiency in object-oriented software development using Python and C , with strong debugging, troubleshooting, and problem-solving skills. Experience with modern software development practices and tools, including version control systems such as Git and Subversion. Experience developing software solutions for automated test, measurement, or validation environments, with an understanding of the challenges associated with large-scale test systems. Experience working collaboratively with stakeholders to develop test frameworks, infrastructure, automation, and data-driven engineering processes. Strong communication, collaboration, and technical leadership skills, with the ability to influence architectural decisions. Desirable Skills and Experience Strong experience with relational database technologies, including database design, SQL development, data modelling, performance optimisation, and large-scale data management. Experience designing and maintaining scalable server-based applications and services within Linux environments. Experience with web services, distributed systems, networked applications, and data synchronisation technologies. Knowledge of networking and communications technologies, including Ethernet, TCP/IP, switching, routing, and distributed systems concepts. Practical hardware debugging skills, including experience using diagnostic equipment such as multimeters, oscilloscopes, and network traffic analysers to support investigation of issues within development and manufacturing environments. While not a primary focus of the role, the ability to assist with hardware fault diagnosis and test system troubleshooting would be advantageous. Education / Qualifications Bachelor’s degree in electronic engineering (or Computer Engineering, Computer Science) required. Scope of employment Fulltime / Permanent Ability and willingness to travel internationally Located within commuting distance of York required Primary location of job Office based (York), hybrid working subject to business requirements Compensation & Benefits 26 days holiday public holidays (prorated) Company pension scheme (salary sacrifice) – 7% Company contribution Healthcare cover for employee and spouse/children Life Assurance 4 x salary Private Health Insurance to cover for serious illnesses (after 2 years continuous service) Employee Assistance Programme Cycle Scheme and monthly gym allowance Free onsite parking Adtran is a leading global provider of fiber-based networking solutions and SaaS applications, focused on the broadband access market. Our comprehensive portfolio spans from the metro core to the customer premises, enabling network providers to deliver Gigabit broadband to every home and business. Our vision is to enable a fully connected world where the power to communicate is available to everyone, everywhere. At Adtran, we believe in our people. With a diverse and inclusive team spread across the globe, our culture embraces creativity and seeks innovation and quality in everything we do. Built on a foundation of communication, trust, collaboration, and an entrepreneurial spirit enables us to be a global technology leader and a strong customer advocate. Adtran began operations in January 1986. Headquartered in Huntsville, Alabama, Adtran is located in Cummings Research Park - the second-largest research park in the U.S. and fourth-largest in the world. Our mailing address is 901 Explorer Boulevard, Huntsville, Alabama, 35806. Adtran, Inc. is a wholly-owned subsidiary of Adtran Holdings, Inc. (NASDAQ:ADTN and FSE: QH9). Find out more at adtran.com, or follow our story on LinkedIn and Twitter.