Platform and Security Engineer

Security EngineerSecurity EngineerFull TimeRemoteSeniorTeam 1-10Since 2018H1B SponsorCompany SiteLinkedIn

Location

United Kingdom

Posted

12 days ago

Salary

£90K - £100K / year

Seniority

Senior

Bachelor Degree5 yrs expEnglishAWSCloudHerokuLinuxTerraformUnix

Job Description

Platform and Security Engineer

MAST

• Own and maintain cloud infrastructure across AWS and container-based environments • Design, build, and maintain infrastructure using Infrastructure as Code tools such as Terraform • Support with future replatforming and infrastructure modernisation initiatives, including migration from Heroku to AWS container platforms • Manage vulnerability remediation processes including CVE tracking, security patching, and maintaining regular patching cadences • Support operational resilience (OR), disaster recovery (DR), backup strategies, and business continuity planning • Help maintain and improve security and compliance processes aligned with ISO27001 framework • Improve system reliability, scalability, resilience, and performance across the Mast platform • Troubleshoot infrastructure, platform, networking, and security related issues across environments • Contribute to incident response processes and ongoing operational improvements • Build systems and tooling that automate infrastructure management and operational workflows wherever possible • Implement and maintain observability tooling including monitoring, logging, alerting, and tracing • Building tools and platforms that enable product teams to provision resources autonomously (self-service) • Building and maintaining CI/CD pipelines and deployment workflows to improve developer experience and delivery velocity • Introducing guardrails for self-service cloud engineering by development teams

Job Requirements

  • 5+ years experience in either platform engineering, cloud infrastructure, SRE, DevOps, or security engineering roles
  • Strong experience with AWS and container based infrastructure
  • Experience managing infrastructure using Infrastructure as Code tools such as Terraform
  • Experience building and operating scalable, reliable production systems
  • Experience with CI/CD pipelines, deployment automation, and developer tooling
  • Working knowledge of Linux/Unix systems, networking, and cloud security fundamentals
  • Experience with observability tooling including monitoring, logging, alerting, and tracing
  • Experience supporting incident response, operational resilience, disaster recovery, or business continuity processes
  • Comfortable working across infrastructure, security, reliability, and compliance domains
  • Comfortable owning operational and infrastructure concerns end-to-end in a fast moving environment
  • Strong communication skills and ability to collaborate effectively with both technical and non-technical stakeholders
  • Comfortable using AI tools as part of your development workflow.

Benefits

  • Stock Option Plan
  • 25 days holiday + bank holidays
  • 4 - 10 weeks work from anywhere, based on tenure (for UK based roles)
  • Vitality Health insurance
  • Pension plan
  • Equipment budget
  • Learning & development budget
  • Cycle to Work Scheme
  • Monthly team socials + Quarterly Team Meet-ups @ HQ
  • Digital-first, employee-first company with a flexible working culture + Central London HQ

Related Categories

Related Job Pages

More Security Engineer Jobs

ContractRemoteTeam 2-10Since 2025H1B No Sponsor

• Design vulnerable multi-component applications and security challenge environments across languages such as Go, Python, Node.js, or Rust • Develop realistic exploit chains combining multiple vulnerability categories and attack vectors • Build deterministic evaluation environments using Docker and automated validation tooling • Create security-focused test cases and verification logic for vulnerability detection and remediation workflows • Review and analyze AI-generated outputs to identify gaps in reasoning, security understanding, or exploit detection • Develop adversarial scenarios involving misleading documentation, obfuscated code, edge cases, and hidden attack paths • Model real-world vulnerability classes inspired by CVEs, bug bounty findings, and production security incidents • Ensure evaluation tasks remain scalable, reproducible, and resistant to contamination from public datasets • Collaborate with cross-functional teams working on AI evaluation, benchmarking, and automated testing systems

Brazil
Job Closed
Full TimeRemoteTeam 5,001-10,000H1B Sponsor

• Owning the technical relationship with customers from onboarding through renewal • Performing technical presentations and demos for customers and partners • Communicating concepts to audiences, including executive-level decision-makers, and follow up with technical staff in all areas • Adapting to complex, changing business environments to deliver valuable solutions to enterprise customers • Providing updates to customers on requested features, bug fixes, and product roadmaps • Familiarizing yourself with customer environments, requirements, and milestones in order to help drive value

Massachusetts
$112.5K - $202.5K / year
Full TimeRemoteTeam 51-200Since 1977H1B No Sponsor

• Review and triage high volumes of test-centre incident reports • Support investigations into potential exam security issues • Manage security-related policy exceptions • Communicate clearly and professionally with candidates and internal stakeholders • Contribute to updates to exam security policies, procedures and guidance • Support initiatives that protect CFA Institute exam content

Florida + 2 moreAll locations: Florida | North Carolina | Virginia
$70K - $80K / year
Gramian Consulting Group logo

Cybersecurity Experts for AI Training

Gramian Consulting Group

Gramian Consultancy is a boutique consultancy specializing in IT professional services and engineering talent solutions. With a strong background in software engineering and leadership, we help companies build high-performing teams by matching them with professionals who truly fit their needs.

Role Description We are looking for experienced Cybersecurity Experts to contribute to the development of advanced evaluation environments for frontier AI systems. In this role, you will create realistic security-focused coding scenarios that assess how AI models understand software vulnerabilities, exploit chains, secure coding practices, and complex attack surfaces. The work combines elements of offensive security, application security, software engineering, and AI evaluation. This is a highly technical, hands-on opportunity focused on building reproducible security benchmarks and adversarial testing environments inspired by real-world vulnerability patterns. - Commitments Required: 8 hours per day with an overlap of 4 hours with PST. - Employment type: Contractor assignment (no medical/paid leave) - Duration of contract: 4 weeks+ - Location: Bangladesh, Brazil, Colombia, Egypt, Ghana, India, Pakistan, Indonesia, Kenya, Nigeria, Turkey, Vietnam - Interview: 2x technical interviews Responsibilities - Design vulnerable multi-component applications and security challenge environments across languages such as Go, Python, Node.js, or Rust - Develop realistic exploit chains combining multiple vulnerability categories and attack vectors - Build deterministic evaluation environments using Docker and automated validation tooling - Create security-focused test cases and verification logic for vulnerability detection and remediation workflows - Review and analyze AI-generated outputs to identify gaps in reasoning, security understanding, or exploit detection - Develop adversarial scenarios involving misleading documentation, obfuscated code, edge cases, and hidden attack paths - Model real-world vulnerability classes inspired by CVEs, bug bounty findings, and production security incidents - Ensure evaluation tasks remain scalable, reproducible, and resistant to contamination from public datasets - Collaborate with cross-functional teams working on AI evaluation, benchmarking, and automated testing systems Qualifications - 4+ years of experience in cybersecurity, application security, vulnerability research, or offensive security - Hands-on experience with vulnerability discovery, exploit development, secure code review, or patch validation - Strong understanding of web security, authentication, sessions, OAuth, JWT, SSRF, injection attacks, and access control vulnerabilities - Experience with cryptographic vulnerabilities, filesystem attacks, or privilege escalation scenarios - Experience using security tools such as SAST, fuzzers, IAST, or similar security testing frameworks - Strong coding skills in at least two of the following languages: Go, Python, Node.js, Rust - Experience working with Docker and containerized environments - Familiarity with Linux internals and system-level behavior - Experience with bug bounty programs, CTFs, red teaming, or CVE research is a strong plus

India + 9 moreAll locations: India | Brazil | Colombia | Egypt | Pakistan | Indonesia | Bangladesh | Ghana | Kenya | Nigeria
Job Closed