Join Our Team
Build your career with one of the UK's leading cybersecurity firms. Work on cutting-edge security challenges with world-class experts.
Why Work With Us
Competitive Compensation
Industry-leading salary, performance bonuses, and equity options
Remote & Hybrid
Flexible work arrangements with modern office in central London
Learning & Development
Training budget, conference attendance, and certification support
World-Class Team
Work with leading security experts and researchers
Open Positions
Junior Penetration Test Engineer
Join our technical assurance team to conduct security assessments across web applications, mobile apps, and infrastructure.
Requirements
- •Bachelor's degree in Computer Science, Cybersecurity, or related field
- •Basic understanding of OWASP Top 10 and common vulnerabilities
- •Familiarity with tools like Burp Suite, Nmap, Metasploit
- •Knowledge of at least one scripting language (Python, Bash, PowerShell)
- •Strong analytical and problem-solving skills
- •Excellent written and verbal communication skills
Nice to Have
- •OSCP, CEH, or equivalent certification
- •Experience with bug bounty programs
- •Understanding of cloud security (AWS, GCP, Azure)
- •Knowledge of DevSecOps practices
Responsibilities
- •Conduct penetration tests on web applications and APIs
- •Identify and document security vulnerabilities
- •Write detailed technical reports for clients
- •Collaborate with senior team members on complex assessments
- •Stay updated with latest security research and attack techniques
Mid-Level Penetration Test Engineer
Lead security assessments across diverse technologies including cloud infrastructure, mobile applications, and blockchain systems.
Requirements
- •3+ years of experience in penetration testing or offensive security
- •OSCP, OSCE, or equivalent professional certification
- •Proven track record of discovering critical vulnerabilities
- •Deep understanding of networking protocols and security
- •Experience with manual and automated testing methodologies
- •Strong report writing and client communication skills
- •Ability to work independently and lead small projects
Nice to Have
- •Additional certifications: OSWE, OSEP, GXPN
- •Experience with smart contract auditing (Solidity)
- •Cloud security certifications (AWS/GCP/Azure)
- •Mobile application security experience (iOS/Android)
- •Contribution to security tools or CVEs
Responsibilities
- •Perform comprehensive security assessments independently
- •Lead penetration testing projects from scoping to reporting
- •Mentor junior team members
- •Develop custom tools and exploit code when needed
- •Present findings to technical and non-technical stakeholders
- •Contribute to internal knowledge base and training materials
Senior Penetration Test Engineer
Lead complex security assessments, mentor team members, and shape our offensive security practice.
Requirements
- •5+ years of experience in offensive security
- •Multiple advanced certifications (OSCP, OSCE, OSEP, OSWE, or equivalent)
- •Proven expertise in multiple domains (web, mobile, cloud, network)
- •Experience leading red team engagements
- •Published security research or CVEs
- •Expert-level understanding of attack frameworks and TTPs
- •Experience with team leadership and mentoring
Nice to Have
- •CREST certified (CRT, CCT INF, CCT APP)
- •Blockchain and smart contract security expertise
- •AI/ML security experience
- •Speaking experience at security conferences
- •Open-source security tool contributions
Responsibilities
- •Lead complex red team and penetration testing engagements
- •Architect custom attack scenarios and exploit chains
- •Mentor and train junior and mid-level engineers
- •Conduct security research and develop new testing methodologies
- •Represent Pyramid Ledger at client meetings and conferences
- •Contribute to business development and proposal writing
Software Developer (Security Tools)
Build and maintain security automation tools, internal platforms, and client-facing security products.
Requirements
- •3+ years of software development experience
- •Strong proficiency in Python and at least one other language (Go, Rust, TypeScript)
- •Experience building web applications (React, Next.js, or similar)
- •Understanding of RESTful APIs and microservices architecture
- •Familiarity with cloud platforms (AWS, GCP, or Azure)
- •Knowledge of security principles and secure coding practices
- •Experience with Git and CI/CD pipelines
Nice to Have
- •Background in cybersecurity or security engineering
- •Experience with security automation and SIEM integration
- •Knowledge of blockchain development (Solidity, Web3)
- •Experience with Kubernetes and containerization
- •Contributions to open-source security projects
Responsibilities
- •Develop internal security automation tools and platforms
- •Build and maintain client-facing security products
- •Integrate security tools with client infrastructure
- •Create dashboards and reporting interfaces
- •Collaborate with security engineers on tool requirements
- •Write clean, maintainable, and well-documented code
Smart Contract Security Auditor
Conduct security audits of smart contracts and DeFi protocols across multiple blockchain platforms.
Requirements
- •2+ years of experience in smart contract development or auditing
- •Expert-level Solidity programming skills
- •Deep understanding of EVM internals and gas optimization
- •Knowledge of common smart contract vulnerabilities
- •Experience with testing frameworks (Hardhat, Foundry, Truffle)
- •Ability to read and understand complex protocol documentation
- •Strong analytical and critical thinking skills
Nice to Have
- •Experience with other blockchain platforms (Cosmos, Polkadot, Solana)
- •Knowledge of formal verification tools (Certora, K Framework)
- •DeFi protocol development experience
- •Bug bounty or security research experience
- •Published audit reports or security research
Responsibilities
- •Conduct comprehensive smart contract security audits
- •Identify vulnerabilities in DeFi protocols and token contracts
- •Write detailed audit reports with remediation recommendations
- •Collaborate with protocol teams during audit process
- •Stay updated with latest DeFi security trends
- •Contribute to audit methodology improvements
Vice President of Applied AI
The Vice President of Applied AI is a senior executive role with full responsibility for establishing, leading, and operating the company's Applied AI consultancy business as a core revenue-generating function. The role has been created to meet growing demand for applied artificial intelligence and AI-led secure software consultancy services. The Vice President of Applied AI is accountable for defining the strategic direction, commercial model, delivery standards, and operational structure of the Applied AI consultancy arm, while also providing senior hands-on technical leadership on complex client engagements. The role holder acts with delegated executive authority for all Applied AI consultancy activities and represents the company in senior-level client, partner, and stakeholder engagements. Salary: £75K+ (based on experience).
Requirements
- •Minimum 10 years of hands-on experience in applied AI, machine learning, or related technical fields
- •Demonstrated success in building and leading high-performing AI or ML engineering teams
- •Strong proficiency in Python and production-grade ML frameworks such as TensorFlow, PyTorch, or similar
- •Solid background in AI system architecture, MLOps pipelines, and deploying models at scale
- •Ability to communicate complex technical ideas clearly to both technical teams and business stakeholders
- •Track record of defining and delivering AI initiatives that align with broader business goals
- •Practical experience across multiple AI domains such as NLP, LLMs, computer vision, or predictive analytics
- •Familiarity with AI governance, compliance, and responsible AI practices
Nice to Have
- •Postgraduate degree (MSc or PhD) in Computer Science, Machine Learning, or a related discipline
- •Contributions to open-source AI projects or published work in the field
- •Prior experience working within cybersecurity, fintech, or similarly regulated industries
- •Relevant cloud certifications from AWS, Google Cloud, or Azure
- •Background in early-stage or high-growth environments where you've built AI capabilities from the ground up
- •Understanding of secure software development lifecycles and security-first engineering principles
Responsibilities
- •Determine and direct the overall strategy for the company's Applied AI consultancy services, including service offerings, market positioning, and delivery approach
- •Analyse market, technical, regulatory, and commercial data to make strategic decisions affecting the growth and viability of the Applied AI business arm
- •Establish and approve applied AI policies, methodologies, and operating standards for consultancy delivery
- •Set pricing models, delivery structures, and commercial terms for applied AI consultancy engagements
- •Prepare, approve, and manage budgets, forecasts, and investment plans for the Applied AI consultancy function
- •Authorise expenditure, resource commitments, and third-party engagements required to deliver consultancy services
- •Act as the final technical decision-maker for applied AI consultancy engagements, including architecture, model selection, risk acceptance, and solution design
- •Provide hands-on technical leadership on complex or high-risk client projects where senior expertise is required
- •Resolve escalated technical, security, or delivery issues affecting client outcomes or commercial performance
- •Decide on the structure, scale, and skill mix of the Applied AI consultancy team
- •Approve recruitment, role definitions, performance expectations, and professional development plans for applied AI consultants
- •Lead, manage, and assess senior technical staff to ensure delivery quality and long-term capability development
- •Establish and enforce governance frameworks for applied AI and information security consultancy activities
- •Determine acceptable risk thresholds for AI deployment and security practices within client engagements
- •Ensure compliance with relevant legal, regulatory, and contractual requirements affecting applied AI consultancy work
- •Plan and control the allocation of personnel, tools, and infrastructure across consultancy engagements
- •Prioritise delivery commitments and resolve conflicts between commercial demand and delivery capacity
- •Implement reporting, auditing, and performance monitoring systems for the Applied AI consultancy function
- •Act as the company's senior representative for applied AI consultancy in client negotiations, technical steering committees, and strategic discussions
- •Approve consultancy proposals, statements of work, and delivery commitments
- •Direct the preparation and dissemination of reports, recommendations, and advisory outputs for clients and partners
How to Apply
Send your CV, cover letter, and any relevant portfolio or GitHub links to:
careers@pyramidledger.comPlease include the position title in your email subject line.
We review all applications and will respond within 5-7 business days.
Pyramid Ledger is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.
All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status.