Staff Software Developer

Staff Software Developer

Location: Cambridge (Hybrid, 3 days onsite)

Job Type: Permanent, full-time

Position Overview:

An experienced Staff Software Developer with strong C and Python expertise, responsible for leading the design and delivery of complex features within a major cryptographic security product.

The role provides technical leadership from initial feature analysis through design, implementation, testing, and release. Working across embedded software, platform components, client-side tools, and APIs, it establishes clear technical direction, drives cross-functional collaboration, and ensures solutions are secure, maintainable, and aligned with the product architecture.

This is a hands-on technical leadership position requiring strong software engineering and design skills, sound technical judgement, and the ability to influence, mentor, and guide engineers across multiple disciplines.

Responsibilities

• Lead complex features from initial analysis and technical design through breakdown, estimation, implementation, validation, and release.
• Translate high-level or evolving requirements into a clear technical approach for the team setting priorities of tasks.
• Design, develop, test, review, and maintain high-quality software across relevant areas of the product.
• Coach and mentor engineers, including supporting Senior Software Developers in developing their technical leadership and feature ownership.
• Support architecture team in design of system-level architecture (availability, latency, cost, data models). Use cross-domain knowledge to anticipate scale and evolution over time.

Qualifications

• Basic Qualifications

• A degree, equivalent qualification, or equivalent practical experience in Software Engineering, Computer Science, Mathematics, or a related discipline.

• Strong software development expertise in C, Python, or comparable systems-level technologies, with the ability to work effectively within an established C and Python codebase.

• Significant experience designing and delivering complex, multi-component software systems.

• Experience working across multiple components or layers of a software system, such as embedded software, device drivers, platform components, client-side tools, or APIs.

• Experience providing technical leadership for complex features or substantial software initiatives.

• Practical experience with CI/CD and disciplined, automated testing practices.

• Experience mentoring engineers and influencing technical decisions across teams or disciplines.

Bonus Qualifications:

• Experience working within a regulated industry or with software certification, assurance, or compliance requirements.
• Working knowledge of open-source licensing, software supply-chain considerations and contributions to, or practical use of, open-source software projects and ecosystems.
• Knowledge of cryptographic principles, secure software development, or threat modelling.
• Exposure to Agile development methodologies and scaled product-development environments.

At Entrust, we don’t just offer jobs – we offer career journeys. Here is what you can expect when you join our team:

• Career Growth: Whether you’re a budding developer or a seasoned expert, we’re invested in your professional journey. With learning-forward initiatives and exciting challenges, your growth is our priority.

• Flexibility: Life is all about balance. Whether you’re remote, hybrid, or on-site, we offer flexible options that fit your lifestyle.

• Collaboration: Here, your voice matters. Our teams thrive on sharing ideas, brainstorming solutions, and working together to build a better tomorrow.

• We believe in securing identities—but it doesn’t stop there. At Entrust, we’re passionate about valuing all identities. Our culture is built on diversity, inclusion, and respect. From unconscious bias training for our leaders to global affinity groups that connect colleagues across the globe, we’re creating a community where everyone is encouraged to be themselves.

• If you’re excited by the prospect of innovating, growing your career, and collaborating in a dynamic environment, Entrust is the place for you. Join us in making a difference. Let’s build a more secure world—together.