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Offensive Security (Mobile) | £65-75k DOE | Hybrid Working (UK) We're working with an innovative UK technology company operating at the forefront of digital identity and biometric security. As their security function continues to grow, they're looking to appoint an experienced Offensive Security Engineer with a strong focus on mobile application security. The Opportunity: You'll take ownership of sophisticated red team and mobile security assessments across iOS and Android environments, simulating real-world attack scenarios to identify vulnerabilities before they can be exploited. The role combines hands-on offensive testing, exploit development, research into emerging threats, and close collaboration with engineering teams to ensure vulnerabilities are remediated effectively. This position would suit someone who enjoys reverse engineering, breaking mobile protections, and staying ahead of evolving threats in areas such as biometrics, authentication, and device compromise. Key Responsibilities: • Conduct advanced mobile application penetration testing across iOS and Android, • Perform reverse engineering, runtime manipulation, and instrumentation attacks, • Simulate realistic adversarial scenarios including:, • Rooted and jailbroken devices, • Emulator and Frida-based attacks, • Certificate pinning bypass, • Session manipulation and API abuse, • Biometric spoofing and presentation attacks, • Identify weaknesses in authentication, cryptographic controls, and mobile architectures, • Develop proof-of-concept exploits and custom tooling, • Produce high-quality reports with practical remediation guidance, • Work closely with software engineers and product teams to validate fixes, • Research emerging mobile attack techniques and adversarial methods, • Support improvements to security monitoring and detection capabilities, • Mentor development teams on secure mobile development practices About You: You will have strong experience in offensive security, penetration testing, or mobile security research, with a genuine passion for understanding how complex systems can be attacked and improved. Essential Experience: • 4+ years in Red Teaming, Penetration Testing, or Mobile Security, • Deep expertise in Android and/or iOS application security, • Strong experience with tools such as:, • Frida, • Ghidra, • Hopper, • IDA Pro, • Burp Suite, • Experience analysing APK and IPA binaries, • Ability to bypass certificate pinning, anti-debugging, and anti-tamper controls, • Strong understanding of:, • Android and iOS security models, • Secure storage (Keychain / Keystore), • Cryptographic implementations, • OAuth and authentication protocols, • Scripting and automation skills to build custom testing tools, • Excellent communication skills and the ability to explain findings clearly Desirable: • Experience with biometric systems and identity verification technologies, • Security research background, • Contributions to open-source tooling or vulnerability research, • Exposure to threat modelling and secure architecture reviews If this sounds like you, apply now or reach out directly. Oscar Associates (UK) Limited is acting as an Employment Agency in relation to this vacancy. To understand more about what we do with your data please review our privacy policy in the privacy section of the Oscar website.

Offensive Security (Mobile) | £65-75k DOE | Hybrid Working (UK) We're working with an innovative UK technology company operating at the forefront of digital identity and biometric security. As their security function continues to grow, they're looking to appoint an experienced Offensive Security Engineer with a strong focus on mobile application security. The Opportunity: You'll take ownership of sophisticated red team and mobile security assessments across iOS and Android environments, simulating real-world attack scenarios to identify vulnerabilities before they can be exploited. The role combines hands-on offensive testing, exploit development, research into emerging threats, and close collaboration with engineering teams to ensure vulnerabilities are remediated effectively. This position would suit someone who enjoys reverse engineering, breaking mobile protections, and staying ahead of evolving threats in areas such as biometrics, authentication, and device compromise. Key Responsibilities: • Conduct advanced mobile application penetration testing across iOS and Android, • Perform reverse engineering, runtime manipulation, and instrumentation attacks, • Simulate realistic adversarial scenarios including:, • Rooted and jailbroken devices, • Emulator and Frida-based attacks, • Certificate pinning bypass, • Session manipulation and API abuse, • Biometric spoofing and presentation attacks, • Identify weaknesses in authentication, cryptographic controls, and mobile architectures, • Develop proof-of-concept exploits and custom tooling, • Produce high-quality reports with practical remediation guidance, • Work closely with software engineers and product teams to validate fixes, • Research emerging mobile attack techniques and adversarial methods, • Support improvements to security monitoring and detection capabilities You will have strong experience in offensive security, penetration testing, or mobile security research, with a genuine passion for understanding how complex systems can be attacked and improved. Essential Experience: • 4+ years in Red Teaming, Penetration Testing, or Mobile Security, • Deep expertise in Android and/or iOS application security, • Strong experience with tools such as:, • Frida, • Ghidra, • Hopper, • IDA Pro, • Burp Suite, • Experience analysing APK and IPA binaries, • Ability to bypass certificate pinning, anti-debugging, and anti-tamper controls, • Strong understanding of:, • Android and iOS security models, • Secure storage (Keychain/Keystore), • Cryptographic implementations, • OAuth and authentication protocols, • Scripting and automation skills to build custom testing tools, • Experience with biometric systems and identity verification technologies, • Security research background, • Contributions to open-source tooling or vulnerability research Oscar Associates (UK) Limited is acting as an Employment Agency in relation to this vacancy. To understand more about what we do with your data please review our privacy policy in the privacy section of the Oscar website.

AI performance is the major tech theme for the next decade. We are building systems that autonomously discover, test, and ship state-of-the-art GPU kernels. Our mission is to fully automate this process by combining LLMs with evolutionary methods. We just closed an unannounced $4.2M pre-seed round from top-tier funds and technical angels, and have proven results with large and sophisticated enterprise partners on custom neural architectures We believe that revolutionary breakthroughs often happen at the intersections of fields. We are not a research lab, nor are we an AI agents company. We’re working at the intersection of LLMs and evolutionary computing to build self-improving systems. We’re looking for exceptionally talented engineers and researchers to join us on this epic quest Responsibilities • Write SOTA GPU kernels, • Own complex production ML/AI systems end-to-end, • Understand how kernel-level gains translate to wall-clock improvements in production., • Build the infrastructure that lets LLM agents iterate unsupervised for days - compilation, correctness, benchmarking, scoring, lineage tracking..., • Design the evolutionary search - fitness landscapes, variation operators, population management, selection pressure, stagnation detection, exploration vs. exploitation over multi-day autonomous runs, • Communicate and share ideas through high-quality documentation, technical meet-ups and blogs For lead candidates: Hire and mentor a small team of exceptional engineers and researchers Qualifications • You've written and shipped high-performance or SOTA CUDA kernels, • Deep understanding of mixed precision, quantisation (INT4, INT8, FP8, MXFP4, block-scaled formats), kernel fusion, distributed computing strategies (TP, PP, CP), • You've made deliberate choices about tiling, memory access patterns, warp-level primitives, and instruction scheduling, • You've traced performance cliffs to their root cause through profiler output, • You've worked with CuTe, Triton, Helion or equivalent abstractions, and know when to dive into PTX, • You understand GPU architecture across generations — registers through L2, warp execution, divergence costs, occupancy tradeoffs, what changed between Hopper and Blackwell and why it matters, • You know transformers at the implementation level. Attention variants, KV cache strategies, quantisation schemes, and how they shape kernel design, • You've worked with production inference or training frameworks, vLLM, Megatron-LM, etc., • You've built performance-critical infrastructure before - compilers, profilers, auto-tuners, or search systems, • You have real intuition for evolutionary methods, fitness landscapes, and what makes variation operators work on hard combinatorial problems, • You're familiar with new or esoteric technical methods such as Neural Algorithmic Reasoning, Geometric Deep Learning, Category Theory, Neuroevolution, Megakernels, or the work of François Chollet, Kenneth Stanley, Jeff Clune, Jurgen Schmidhuber, David Ha, and Christian Szegedy Bonus • Open-source kernel contributions (FlashAttention, FlashInfer, vLLM, Unsloth, Liger-Kernels, ThunderKittens), • Publications in ML/AI, kernel optimisation or evolutionary methods (NeurIPS, ICLR, CVPR, GECCO or equivalent), • Other HW experience (AMD, MLX, edge HW), • Familiarity with TileLang, Helion, CuTile, • Experience building agentic systems, • Demonstrated work on KernelBench, Kaggle, GitHub, Blogs, StackOverflow Answers, or any public work that demonstrates deep EA, ML or GPU/HW expertise, • HPC experience This is a full-time, permanent role. Competitive salary + significant founding equity. On-site/hybrid/remote flexible - Dublin, London, Paris or NYC preferred If this sounds exciting to you, apply via the link below or send a pdf of your CV/résumé to

Offensive Security (Mobile) | £65-75k DOE | Hybrid Working (UK) We're working with an innovative UK technology company operating at the forefront of digital identity and biometric security. As their security function continues to grow, they're looking to appoint an experienced Offensive Security Engineer with a strong focus on mobile application security. The Opportunity: You'll take ownership of sophisticated red team and mobile security assessments across iOS and Android environments, simulating real-world attack scenarios to identify vulnerabilities before they can be exploited. The role combines hands-on offensive testing, exploit development, research into emerging threats, and close collaboration with engineering teams to ensure vulnerabilities are remediated effectively. This position would suit someone who enjoys reverse engineering, breaking mobile protections, and staying ahead of evolving threats in areas such as biometrics, authentication, and device compromise. Key Responsibilities: Conduct advanced mobile application penetration testing across iOS and Android Perform reverse engineering, runtime manipulation, and instrumentation attacks Simulate realistic adversarial scenarios including: Rooted and jailbroken devices Emulator and Frida-based attacks Certificate pinning bypass Session manipulation and API abuse Biometric spoofing and presentation attacks Identify weaknesses in authentication, cryptographic controls, and mobile architectures Develop proof-of-concept exploits and custom tooling Produce high-quality reports with practical remediation guidance Work closely with software engineers and product teams to validate fixes Research emerging mobile attack techniques and adversarial methods Support improvements to security monitoring and detection capabilities Mentor development teams on secure mobile development practices About You: You will have strong experience in offensive security, penetration testing, or mobile security research, with a genuine passion for understanding how complex systems can be attacked and improved. Essential Experience: 4+ years in Red Teaming, Penetration Testing, or Mobile Security Deep expertise in Android and/or iOS application security Strong experience with tools such as: Frida Ghidra Hopper IDA Pro Burp Suite Experience analysing APK and IPA binaries Ability to bypass certificate pinning, anti-debugging, and anti-tamper controls Strong understanding of: Android and iOS security models Secure storage (Keychain / Keystore) Cryptographic implementations OAuth and authentication protocols Scripting and automation skills to build custom testing tools Excellent communication skills and the ability to explain findings clearly Desirable: Experience with biometric systems and identity verification technologies Security research background Contributions to open-source tooling or vulnerability research Exposure to threat modelling and secure architecture reviews If this sounds like you, apply now or reach out directly. Oscar Associates (UK) Limited is acting as an Employment Agency in relation to this vacancy. To understand more about what we do with your data please review our privacy policy in the privacy section of the Oscar website. TPBN1_UKTJ

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