Staff Engineer Connector API

HID Global Corp; Cardiff; On-site; GBP 50,000 - 70,000; Full time

Job summary

A leading access solutions company in Cardiff is seeking a Staff Engineer Connector API to provide technical leadership for the architectural and coding aspects of the Connectors product area. The ideal candidate will have extensive experience in software design, proven coding abilities, and a strong foundation in security best practices. This role offers a competitive salary and a supportive work environment with opportunities for career development.

Benefits

Competitive salary and rewards package

Flexible work environment

Extensive career development opportunities

Qualifications

• Proficient in defining and maintaining technical architecture.
• Experienced in guiding teams on design patterns.
• Strong understanding of system design and scalability.

Responsibilities

• Define the technical architecture for the Connectors product family.
• Provide technical leadership to development teams.
• Align product-level architecture with system architecture.

Skills

Security best practices: OAuth2, JWT, TLS

.NET Core

C, C++ & C#

Messaging and event technologies (e.g., MQTT)

Software design principles (modularity, SOLID)

CI/CD pipelines

Containerization and orchestration (Docker, Kubernetes)

Cloud services (Azure, AWS, GCP)

Monitoring and observability (e.g., Prometheus)

Education

Engineering degree or equivalent

5+ years of related industry experience

Job description

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An Amazing Career Opportunity for a Staff Engineer Connector API !!

Location:Cardiff, UK

Job ID: 42842

A technical leadership role responsible for the architecture, design direction, and technical strategy of the Connectors product area.

Working under the overall guidance of the Solution Architect, this role provides hands-on technical leadership and architectural direction to the software engineers responsible for implementing individual connectors. The Product-Level Architect ensures that all connectors adhere to a consistent framework, design standards, and security principles, while remaining performant, maintainable, and extensible.

This role is expected to be roughly a 50% / 50% between product level architecture and writing code. It is ideal for those people who want to be involved with architecture but still want to write code.

This position combines architectural vision with practical engineering know-how — setting standards, reviewing implementations, and occasionally contributing to core framework code to ensure quality and alignment across all integrations.

If this sounds like you keep on reading !

Who are we?

HID powers the trusted identities of the world’s people, places, and things, allowing people to transact safely, work productively and travel freely.

Physical Access Control Solutions (PACS):

HID Physical Access Control Solutions (PACS) is at the forefront of securing spaces with advanced, reliable access control solutions. From cutting-edge readers, credentials and controllers, to mobile and biometric technologies, HID PACS empowers organizations worldwide to protect their people, property and assets with scalable, high-quality solutions.

This is more than just a job – it’s your chance to join an industry leader to drive innovation in access control and make a real impact on global security solutions.

As our Staff Software Engineer, you’ll support HID’s success by:

• Define and maintain the technical architecture for the Connectors product family.
• Provide technical leadership and direction to development teams, ensuring adherence to design patterns and integration standards.
• Work closely with the Solution Architect to align product-level architecture with the wider system architecture.
• Design, evolve, and maintain shared libraries, and framework components used across connectors.
• Lead architectural reviews and mentor engineers on best practices in system design, performance, and scalability.
• Evaluate third-party APIs, SDKs, and data models to determine optimal integration patterns.
• Define non-functional requirements such as security, performance, scalability, and observability for connector solutions.
• Ensure all integrations follow security by design principles and comply with internal and industry standards.
• Document architectural decisions, maintain technical diagrams, and author reference implementations.
• Collaborate with the Product Owner to balance technical debt and new feature development.
• Engage in hands-on prototyping or complex debugging where deep expertise is needed.
• Stay current with evolving technologies relevant to integration, connectivity, and distributed systems.

What we will love about your background

• Understanding of security best practices: OAuth2, JWT, TLS, and “security by design” principles.
• Proficient in .NET Core &/or C, C++ & C#
• Familiarity with messaging and event technologies such as MQTT
• Strong understanding of software design principles — modularity, SOLID, and domain-driven design.
• Experience with CI/CD pipelines, automated testing, and code quality tooling.
• Strong understanding of containerization and orchestration (Docker, Kubernetes).
• Experience with cloud services (Azure, AWS or GCP also valuable).
• Proven ability to guide others in code design, review, and system decomposition.
• Experience implementing monitoring and observability (e.g., Prometheus, Grafana, App Insights).

Your Experience and Education include:

• Engineering degree or equivalent or suitable experience.
• Minimum of 5+ years of related industry experience.
• Proven experience designing and implementing scalable backend or integration architecture.
• Understanding of security best practices: OAuth2, JWT, TLS, and “security by design” principles.
• Proven experience designing and implementing scalable backend or integration architectures.
• Familiar creating multiple representative deployment environments to validate our solution.
• Experience of the access control industry.
• Experience developing networked applications in an enterprise environment would be an advantage.

What we can offer you:

• Competitive salary and rewards package.
• Competitive benefits and annual leave offering, allowing for work-life balance.
• A vibrant, welcoming & inclusive culture.
• Extensive career development opportunities and resources to maximize your potential.
• To be a part of a global organization that is pioneering the hardware, software and services that allow people to confidently navigate the physical and digital worlds.

Why apply?

• Empowerment:You’ll work as part of a global team in a flexible workenvironment, learning and enhancing your expertise. We welcome an opportunity to meet you and learn about your unique talents, skills, and experiences. You don’t need to check all the boxes.If you have most of the skills and experience, we want you to apply.
• Innovation:You embrace challenges and want to drive change. We are open to ideas, including flexible work arrangements, job sharing or part-time job seekers.
• Integrity:You are results-orientated, reliable, and straightforward and value being treated accordingly. We want all our employees to be themselves, to feel appreciated and accepted.

We are the ASSA ABLOY Group
Our people have made us the global leader in access solutions. In return, we open doors for them wherever they go. With nearly 63,000 colleagues in more than 70 different countries, we help billions of people experience a more open world. Our innovations make all sorts of spaces – physical and virtual – safer, more secure, and easier to access.

As an employer, we value results – not titles, or backgrounds. We empower our people to build their career around their aspirations and our ambitions – supporting them with regular feedback, training, and development opportunities. Our colleagues think broadly about where they can make the most impact, and we encourage them to grow their role locally, regionally, or even internationally.

As we welcome new people on board, it’s important to us to have diverse, inclusive teams, and we value different perspectives and experiences.