Security DevOps Engineer - Crypto Social Infrastructure

Location: London, New York City (Office)

Compensation: $250K - $300K

We are a high-growth software development company of elite builders and proud contributors to the largest crypto social network globally, a platform that has generated over $600 million in revenue since March 2024. We are seeking a Security DevOps Engineer to join our team, focusing on building secure, scalable infrastructure for decentralized applications and redefining what’s possible in social finance.

You will play a critical, hands-on role in hardening our development and production environments. This role involves integrating security throughout our CI/CD pipeline, automating security scanning and monitoring, and working directly with development teams to ensure a strong overall security posture across our cloud and blockchain infrastructure.

What You'll Do:

Staff Software Engineer - Distributed Ledger Execution

Location: Remote - US

Compensation: $ Competitive

We are a fast-growing software company committed to supporting, developing, and servicing an open source, proof-of-stake platform. This EVM-compatible Distributed Ledger Technology (DLT) is specifically built to meet the needs of enterprise and Web3 applications, prioritizing speed, security, stability, and sustainability. We are seeking a Staff Software Engineer to be a technical leader on our core Execution Team.

You will be responsible for delivering software services, business logic, and APIs within the core Consensus Node—the heart of our DLT. This is a high-impact role requiring deep passion for solving technical challenges involving distributed execution, state management, transaction lifecycles, and economic systems (fees, rewards). You will drive technical direction, optimize performance, and mentor engineers within a highly collaborative, open-source environment.

Key Responsibilities:

Senior/Lead EVM Engineer - Distributed Ledger Optimization

Location: Remote - US

Compensation: Competitive

We are a fast-growing software company committed to supporting, developing, and servicing an open source, proof-of-stake, EVM-compatible platform. This decentralized network is built for enterprise and Web3 applications, prioritizing speed, security, and stability. We are seeking a seasoned EVM Engineer to join our Smart Contracts team and drive the performance and optimization of our core native services (Java) and Web3 services (JS/TS).

You will be a high-impact contributor, spending approximately 80% of your time designing, coding, and testing core components. Your focus will be on the execution layer, specifically transforming network node states, processing transaction bytes, and exposing critical network data. This includes innovating on compiler and optimization algorithms, enhancing EVM features, and contributing to open-source code clients.

Key Responsibilities:

Validator BD Lead - High-Performance Blockchain Infrastructure

Location: Remote - Europe or North America

Compensation: $140K - $150K

We are reengineering blockchain infrastructure from first principles to make global digital markets as precise and dependable as physical systems. Built on a leading high-performance blockchain, our platform delivers deterministic execution, guaranteed inclusion, and low-latency performance, solving foundational failures that plague current systems. We are building the reliability and control institutions demand, and we are seeking a Validator BD Lead to drive the adoption of this critical infrastructure across the validator ecosystem.

As the Validator BD Lead, you will own and drive the validator engagement strategy, serving as a critical, high-ownership role that will shape our go-to-market efforts and partnership model as we prepare for mainnet. You will lead efforts to build relationships with top-tier validators and ensure successful adoption of our infrastructure.

Key Responsibilities:

Senior Backend Engineer - Stablecoin Infrastructure

Location: Remote - Based in EST timezone

Compensation: $175K - $225K

We are a technology company building a full-service platform that transforms how money moves. Our mission is to make digital dollars the core of a new, global financial fabric—faster, more efficient, and universally accessible. We are creating foundational infrastructure that makes issuing, managing, and integrating stable, dollar-based value on-chain seamless for developers, fintechs, and institutions. We are backed by world-class investors and are growing a team to reimagine how value moves online.

We are seeking a Senior Backend Engineer to accelerate the delivery of both critical internal tooling and high-impact customer-facing products. You will join a small, high-performance team that applies the discipline of high-performance finance to a fast-moving, crypto-native startup environment.

In this role, you will:

Senior Backend Engineer

Location: San Francisco, CA (Near Powell BART)

Employment Type: Full-time

Work Arrangement: Hybrid (3 days/week in-person in SF)

About the Role

Our client, is building the "world's sell anything platform," enabling entrepreneurs and marketing teams to instantly build, test, and grow online businesses and campaigns. Think of them as the GTM (Go-to-Market) platform for entrepreneurs, with customers including major brands (like Tums). The company has raised over $8.4 million from investors like Figma, YCombinator, and Vercel, and has achieved Series A/B metrics on a seed-stage cap table.

They are hiring a Senior Backend Engineer to take on key technical ownership, focusing on the system architecture behind their most popular, high-scale products. This role requires deep expertise in distributed systems and a passion for engineering excellence in a fast-paced environment.

Things You'll Be Working On

Are you passionate about quality and love uncovering hidden bugs and edge cases?

At Keycafe, we’re looking for a QA Engineer who thrives on digging into complex systems, ensuring reliability across both software and hardware, and acting as the critical safeguard for product stability. This isn’t just about running tests — it’s about owning the quality of a global IoT platform used in mission-critical operations every day. You’ll support our software team, but also roll up your sleeves at our Vancouver office to test SmartBox hardware in real-world conditions.

This is your opportunity to have measurable impact across our entire product stack, from cloud software to IoT devices deployed worldwide.

What You’ll Do

About Jobgether

Jobgether is a Talent Matching Platform that partners with companies worldwide to efficiently connect top talent with the right opportunities through AI-driven job matching.

One of our companies is currently looking for a Service Reliability Engineer in Singapore, Philippines, Vietnam, India, or Malaysia.

As a Service Reliability Engineer, your primary mission is to ensure the stability, performance, and scalability of the company’s systems and services. You will serve as the highest level of technical escalation within the support team, working closely with product, tech, and data teams to resolve complex issues. Your role will involve providing technical support, troubleshooting, resolving system issues, and contributing to continuous improvement efforts. You will help ensure minimal downtime, a seamless customer experience, and drive innovation across the organization.

Accountabilities:

About Jobgether

Jobgether is a Talent Matching Platform that partners with companies worldwide to efficiently connect top talent with the right opportunities through AI-driven job matching.

One of our companies is currently looking for an Intermediate Full Stack Software Engineer in Canada / United States.

As an Intermediate Full Stack Software Engineer, you will be a crucial contributor to the development of our fintech, travel, eCommerce, and/or superapp products. Your role will involve working on both frontend and backend development, primarily with React on the frontend and Python/Node microservices on the backend. You will take ownership of building features, services, and databases, while focusing on deployment, monitoring, debugging, and testing. You will collaborate across teams to contribute to the company's business metrics and improve user experiences.

Accountabilities:

About Jobgether

Jobgether is a Talent Matching Platform that partners with companies worldwide to efficiently connect top talent with the right opportunities through AI-driven job matching.

One of our companies is currently looking for a Senior Full Stack Engineer in the United States.

In this role, you will be responsible for architecting, developing, and deploying software solutions that support national security missions. As a Senior Full Stack Engineer on the Deployed Engineering Team, you will work directly with customers in strategic competition, helping them utilize data to make critical decisions. Your work will span large-scale datasets and require collaboration across cross-functional teams to deliver impactful software in high-stakes environments.

Accountabilities: