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Senior, hands-on security engineer owning product and infrastructure security at a stablecoin/crypto company building on Solana. Day to day: threat modeling, secure code review across backends and Solana programs, vulnerability management, bug bounty, and CI/CD security tooling, working directly with the Head of Security and CTO.
Software Engineer II on Marqeta's Core Edge Processing team, shipping production Java code for the real-time systems that route and authorize card transactions, plus the cryptography underneath them. Day to day: owning features end-to-end on AWS, debugging live payment issues, and joining the on-call rotation.
Staff engineer on Marqeta's Core Edge Processing team, writing and reviewing production Java code for the real-time systems that route and authorize card transactions, plus the cryptographic infrastructure beneath them. The role focuses on reliability, performance, and mentoring in a regulated, cloud-native payments environment, remote within Ontario or British Columbia, Canada.
Senior Software Engineer on MetaMask's Predict team at ConsenSys, building prediction-market features into the MetaMask wallet — designing React/React Native front-ends and scalable backend APIs that integrate securely with on-chain prediction market protocols.
Do you believe in the power of education to transform lives and communities? Are you passionate about helping students develop the mathematical foundations required to succeed in computer science and software…
Contract (1099) penetration tester at Bishop Fox running web application security assessments, with secondary depth in cloud, mobile, source-assisted, network, or AI/LLM security. Day to day: plan and execute pentests, identify and validate vulnerabilities, and communicate findings and remediation guidance to technical and executive stakeholders. US-based only.
Senior Infrastructure Engineer at Turnkey, a crypto infrastructure company founded by ex-Coinbase Custody leaders. The role owns production infrastructure (Kubernetes, Terraform-provisioned AWS) and writes real automation software in Go to secure and scale a security-critical platform. Remote, US/Canada based, $200k–$240k.
The Wallet & Payments Security Solutions team sits at the intersection of developer experience and customer trust, building the foundational security layer that every product in the Apple Pay portfolio depends on.…
We are looking for a Senior Go Engineer with blockchain or distributed systems experience to join our team at Rubix Network. You will be working primarily on the core Rubix node, owning the correctness and reliability…
Key Appointments · The Technical Information Security Officer (TISO) role is crucial to our security resilience. This SME individual contributor position is the backbone of our Technical Information Security functions,…
Purpose of the Role Responsible for the operational delivery, continuous improvement, and performance oversight of client’s Managed Security Services capability under the Cyber Fusion Centre. The role supports the…
Working as Embedded SW Engineer based in Athens, you will: Develop SW in the respective areas according to the SDK Vision and Roadmap and in collaboration with the SW Architects “Own” the quality of the software…
Who We Are At OKX, we believe that the future will be reshaped by crypto, and ultimately contribute to every individual's freedom. OKX is a leading crypto exchange, and the developer of OKX Wallet, giving millions…
Build and ship edge-to-cloud security features for Microsoft devices, spanning firmware, OS, and cloud services using Rust/C/C++ and secure engineering practices.
Head of Security & Infrastructure Location: Remote - United States only (must reside in the U.S.) Team: Security & Infrastructure Reports to: CTO (you'll work directly with the CTO) About Rise Rise is a…
Date Posted: 2026-09-22 Country: United States of America Location: OTCTH: Connecticut Home Offices Remote Location, Remote City, CT, 06032 USA Would you like to join a truly international, talent driven company that…
Senior Systems Software Engineer at Terra Quantum in Munich (hybrid) building Quantum Key Distribution systems. Work involves high-performance Python services on Linux, optimizing QKD algorithms (sifting, error correction, privacy amplification), hardware acceleration via GPU/FPGA, and defining software architecture for the core QKD platform. Requires Python, asyncio, WebSockets, Docker/GitHub Act
Position Summary: This position is at the core of safety and certification for SkyDrive Inc.'s eVTOL development. As a Cybersecurity Engineer, you will be responsible for overseeing all cybersecurity assurance…
An on-site data security specialist role in Doha, Qatar: design and operate data protection controls (DLP, masking, tokenization, encryption, database security) across enterprise, GCP/Azure cloud and AI environments, monitor threats around mega sports events, and ensure compliance with privacy regulations and Qatar's NCSA framework.
Define cryptographic information using established standards such as Software Bill of Materials (SBOM) and Cryptography Bill of Materials (CBOM). Develop methodologies to discover and inventory cryptographic assets,…
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