Senior Application Security Engineer at Prolific | Remote, UK

ProlificRemote, UK

Remote Full-time

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Experience Level

Senior

Qualifications

Proven experience in application security, with a focus on secure software development practices. Strong understanding of web security vulnerabilities and mitigation strategies (e.g., OWASP Top Ten). Hands-on experience with security assessment tools and techniques. Excellent communication skills to effectively convey security concepts to technical and non-technical stakeholders. Relevant certifications (e.g., CISSP, CEH, or similar) are a plus.

About the job

Prolific seeks a Senior Application Security Engineer to help protect its applications and user data. This position is fully remote within the UK.

Key responsibilities

Evaluate application security and spot potential risks
Collaborate with engineering and product teams to design secure software architectures
Improve security practices throughout the development lifecycle
Support efforts to safeguard user data and maintain trust in the Prolific platform

Role focus

This role centers on working closely with technical teams to build security into every stage of software development. The Senior Application Security Engineer will play a part in shaping secure solutions and reinforcing Prolific’s commitment to protecting its users.

Location

This is a remote role open to candidates based in the UK.

About Prolific

Prolific is a leading platform that empowers researchers to conduct high-quality studies with diverse participant pools. Our mission is to make research accessible and impactful, fostering innovation and knowledge sharing. As a team member, you will be part of a dynamic environment that values collaboration, creativity, and continuous learning.

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About ElevenLabsElevenLabs is at the forefront of AI innovation, dedicated to redefining human interaction with technology.Founded in January 2023, we introduced the first human-like AI voice model and have rapidly grown to serve millions of users and numerous organizations, including major enterprises like Deutsche Telekom and Meta. Backed by distinguished investors such as Andreessen Horowitz, ICONIQ Growth, and Sequoia, we have successfully raised $781 million in funding, achieving a valuation of $11 billion.Our expansion has led to three primary platforms:ElevenAgents provides businesses with the tools to create seamless and intelligent customer experiences, offering the necessary integration, testing, monitoring, and reliability for large-scale voice and chat agent deployment.ElevenCreative empowers creators and marketers to produce and edit audio, music, images, and videos in over 70 languages.ElevenAPI offers developers access to our advanced AI audio foundational models.Our achievements are driven by the creativity and dedication of our team - a diverse group of researchers, engineers, and operators, including IOI medalists and former founders. If you're passionate about making a significant impact and are ready to work hard, we want to connect with you.How We OperateAgile Environment: We prioritize rapid experimentation, lean teams, and minimal bureaucracy.Impact Matters: We focus on the contributions you make rather than job titles; no task is too small or too large.AI-Driven: Our use of AI enhances speed and quality across all departments, from engineering to operations.Commitment to Excellence: Every output must reflect the high standards of our AI models.Global Talent: We value your skills over your geographic location.What We ProvideDynamic Culture: Join us in a generational opportunity to shape the future of AI, collaborating with a team that is continually pushing boundaries.Opportunities for Growth: Be part of a vibrant team with endless chances to make an impact beyond your immediate role.Professional Development: We are committed to your continuous learning and growth.

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Staff Application Security Engineer

Ivanti

Full-time|Remote|EMEA; Italy, Remote; Netherlands, Remote; Poland, Remote; Scotland, Remote; United Kingdom, Remote

Are you a seasoned Staff Application Security Engineer eager to implement innovative security solutions and uphold technical excellence? At Ivanti, you will be instrumental in shaping the future of secure digital workplaces by designing and enhancing top-tier products utilized globally. Join our vibrant, collaborative team and make a significant impact—helping organizations securely navigate the fast-paced digital landscape. Your expertise will protect countless users while fostering innovation at every level. Why This Role Matters As a Staff Application Security Engineer at Ivanti, your role is vital in protecting our products and users from emerging threats. Your contributions will ensure trust and resilience in our technology, enabling organizations around the world to operate securely and innovate with confidence. What You’ll Do: Oversee the integration of security best practices across all stages of the software development lifecycle, guaranteeing robust protection for Ivanti's products, services, and IT assets. Develop innovative and scalable security tools, processes, and solutions to proactively identify, remediate, and mitigate vulnerabilities in extensive and complex codebases. Design secure architectures, conduct thorough threat modeling, and lead penetration testing and code reviews for both web and mobile applications to uphold the highest security standards. Collaborate with development, operations, and architecture teams to deeply embed security into DevOps practices and promote a culture of continuous security awareness throughout the organization. Lead security education initiatives by providing clear, actionable training and documentation to cross-functional teams, driving vulnerability remediation efforts with stakeholders of varying technical expertise. Work with global product and engineering teams, business leaders, and third-party security vendors to interpret vulnerability reports and coordinate effective security solutions and disclosure programs. Advise stakeholders on prioritizing vulnerabilities, enforcing secure coding standards, applying cryptographic techniques, and adopting industry-leading security protocols and compliance practices.

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Addepar is looking for a Senior Application Security Engineer to help protect our applications and data. This position is fully remote and open to candidates based in the UK. Key responsibilities Find and assess security vulnerabilities within applications Apply security controls and measures to address risks Collaborate with teams across the company to strengthen security practices Support compliance efforts with relevant industry standards Teamwork and influence This role partners closely with engineering and other departments to improve application security. The Senior Application Security Engineer will play a part in shaping Addepar’s overall security approach as we develop and maintain our technology.

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Senior Application Security Engineer at Prolific | Remote, UK

Prolific

Full-time|Remote|Remote, UK

Prolific seeks a Senior Application Security Engineer to help protect its applications and user data. This position is fully remote within the UK. Key responsibilities Evaluate application security and spot potential risks Collaborate with engineering and product teams to design secure software architectures Improve security practices throughout the development lifecycle Support efforts to safeguard user data and maintain trust in the Prolific platform Role focus This role centers on working closely with technical teams to build security into every stage of software development. The Senior Application Security Engineer will play a part in shaping secure solutions and reinforcing Prolific’s commitment to protecting its users. Location This is a remote role open to candidates based in the UK.

Apr 27, 2026

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Senior Application Security Engineer at Prolific | Remote, UK

Experience Level

Qualifications

About the job

Key responsibilities

Role focus

Location

About Prolific

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