Cryptography Engineer in London

Cryptography Engineer in London

London Full-Time 60000 - 80000 € / year (est.) Home office (partial)
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At a Glance

  • Tasks: Analyse and validate cryptographic findings, improve remediation workflows, and support encryption migrations.
  • Company: Join Devtech, a leader in digital innovation for Fortune 1000 companies.
  • Benefits: Enjoy private health insurance, generous vacation, and flexible working hours.
  • Other info: Collaborative environment with opportunities for professional development and growth.
  • Why this job: Make a real impact in the world of cryptography and work with cutting-edge technology.
  • Qualifications: Strong knowledge of cryptography, programming skills, and attention to detail required.

The predicted salary is between 60000 - 80000 € per year.

About Us

Devtech provides digital innovation services that help Fortune 1000 and emerging companies transform, scale and disrupt. We partner with our clients to envision and develop next‑gen digital and cloud solutions that drive impactful business outcomes through people and technology. Our mission is to empower every innovative business in the world to do what they do best, even better. Founded in 2012, Devtech successfully bootstrapped the business for many years before securing institutional growth capital in 2022 and 2024 to fuel our next stages of growth. We are a team of over 300 professionals across Europe and North America, and our continued growth is a testament to the quality of work our teams produce. At Devtech, we’re fostering an environment of autonomy, mastery, and purpose, where our team members can grow and thrive. As we continue to scale globally, we’re excited to welcome new team members who share our curiosity and growth mindset and are ready to make an impact!

What You’ll Do

  • Cryptography Analysis & Validation
    • Review, annotate, and validate cryptographic findings produced by static code analysis, automated tooling, and LLM/agentic systems.
    • Assess correctness, completeness, severity classification (including quantum‑related severities), and overall quality of cryptographic issues using defined rubrics.
    • Identify weaknesses, misconfigurations, or incorrect assumptions in cryptographic implementations across diverse languages and codebases.
    • Perform manual and statistical evaluation of detection and remediation performance across many repositories.
  • Remediation Engineering
    • Evaluate AI‑generated remediation outputs and experiment results, ensuring they meet cryptographic and systems‑security quality standards.
    • Suggest improvements to remediation workflows, especially in edge cases and statistical outliers.
    • Write, refine, and maintain Semgrep/OpenGrep rules to detect cryptographic patterns.
    • Improve remediation systems by documenting insights and contributing to iterative AI agent enhancements.
  • Systems & Migration Support
    • Assist engineering teams (internal and customer) with encryption migration tasks involving databases, filesystems, networks, or multi‑system upgrades.
    • Analyze and support complex data migrations that require coordinated updates across multiple systems.
    • Draft action plans, document risks, and ensure the correct stakeholders are involved for successful cryptographic or system‑level transitions.
  • Customer‑Facing & Cross‑Team Collaboration
    • Meet with customer engineering teams and technical leaders to assess cryptographic posture using Threat Point and related tools.
    • Identify and document gaps in discovery and remediation systems, proposing updates or improvements.
    • Communicate cryptographic reasoning clearly to both technical and non‑technical audiences.
    • Collaborate closely with cryptographers, systems engineers, LLM/AI researchers, product teams, and other specialists.
  • Code & System Evaluation
    • Analyze complex, multi‑language codebases to understand cryptographic usage patterns, build processes, and test suites.
    • Judge the performance of grouping, detection, and remediation systems using a mix of statistical analysis and manual inspection.
  • Documentation & Continuous Improvement
    • Document findings, insights, assumptions, and edge cases with high clarity and precision.
    • Contribute to continuous improvement of cryptographic workflows, AI agent reliability, and remediation pipelines.
    • Maintain structured, organized notes that enable reproducibility and help drive iterative improvements.

What you’ll need

  • Strong academic and applied knowledge of classical cryptography
  • Background implementing cryptographic mechanisms (symmetric, asymmetric, hashing, KDF, MAC, encryption modes, transport layers)
  • Solid programming experience – able to deeply read, analyze, and critique multi‑language codebases (compiled and interpreted)
  • Experience reviewing and validating cryptographic findings or remediation outputs
  • Experience with complex data migrations involving multiple systems
  • Understanding of database and file or filesystem re‑encryption
  • Exceptional attention to detail and passion for correctness and quality
  • Proficiency with systems engineering and modern software development practices
  • Clear communicator able to explain cryptographic reasoning to technical and non‑technical audiences
  • Excellent verbal and written communication skills in English
  • Familiarity with quantum‑resistant and post‑quantum cryptography concepts is a plus
  • Experience writing or refining Semgrep/OpenGrep rules is a plus
  • Experience with repository scanning and remediation applications is a plus
  • Experience with LLM and agentic software engineering flows is a plus

What we offer

  • Private health insurance
  • 25 days of vacation / PTO
  • 7 days of sick leave at 100% pay
  • Outstanding referral bonuses
  • Paternity leave – 15 days for new dads
  • Reduced working hours for the first month after returning from maternity
  • Development program (training & conferences, internal knowledge sharing)
  • Flexible work environment

Cryptography Engineer in London employer: Devtech

At Devtech, we pride ourselves on being an exceptional employer that champions innovation and professional growth. Our dynamic work culture fosters autonomy and collaboration, allowing our Cryptography Engineers to thrive while tackling complex challenges in a supportive environment. With generous benefits such as private health insurance, ample vacation time, and a commitment to continuous development, we empower our team members to make a meaningful impact in the digital landscape.

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Contact Detail:

Devtech Recruiting Team

StudySmarter Expert Advice🤫

We think this is how you could land Cryptography Engineer in London

Tip Number 1

Network like a pro! Reach out to folks in the industry, attend meetups, and connect with Devtech employees on LinkedIn. A personal touch can make all the difference when it comes to landing that interview.

Tip Number 2

Show off your skills! If you’ve got a portfolio or GitHub with cryptography projects, make sure to highlight them. It’s a great way to demonstrate your expertise and passion for the field.

Tip Number 3

Prepare for those interviews! Brush up on your cryptography knowledge and be ready to discuss real-world applications. Practice explaining complex concepts in simple terms – it’ll impress both technical and non-technical interviewers.

Tip Number 4

Don’t forget to apply through our website! It’s the best way to ensure your application gets seen by the right people at Devtech. Plus, we love seeing candidates who are proactive about their job search!

We think you need these skills to ace Cryptography Engineer in London

Cryptography Analysis
Static Code Analysis
Manual Evaluation
Remediation Engineering
Semgrep/OpenGrep Rules Writing
Data Migration Support
Systems Engineering

Some tips for your application 🫡

Tailor Your Application:Make sure to customise your CV and cover letter for the Cryptography Engineer role. Highlight your relevant experience with cryptographic mechanisms and programming skills, so we can see how you fit into our team.

Show Off Your Skills:Don’t hold back on showcasing your technical expertise! Include specific examples of your work with cryptographic analysis, validation, and remediation engineering. We love seeing real-world applications of your skills.

Be Clear and Concise:When writing your application, keep it clear and to the point. Use straightforward language to explain your cryptographic reasoning and experiences, as we want to understand your thought process easily.

Apply Through Our Website:We encourage you to apply directly through our website. It’s the best way for us to receive your application and ensures you’re considered for the role. Plus, it’s super easy!

How to prepare for a job interview at Devtech

Know Your Cryptography Inside Out

Make sure you brush up on classical cryptography concepts and be ready to discuss your experience with symmetric and asymmetric mechanisms. Be prepared to explain how you've implemented these in past projects, as this will show your practical knowledge.

Showcase Your Problem-Solving Skills

During the interview, expect to tackle hypothetical scenarios related to cryptographic weaknesses or misconfigurations. Practice articulating your thought process clearly, as this will demonstrate your analytical skills and ability to think critically under pressure.

Communicate Clearly with All Audiences

Since you'll need to explain complex cryptographic concepts to both technical and non-technical stakeholders, practice simplifying your explanations. Use analogies or real-world examples to make your points relatable and ensure everyone understands your reasoning.

Prepare for Collaboration Questions

Devtech values teamwork, so be ready to discuss your experiences working with cross-functional teams. Think of specific examples where you collaborated with engineers or product teams, and highlight how you contributed to successful outcomes through effective communication and teamwork.