Senior Software Engineer

Location: US or EU (remote-first, office optional). Must be in the US, not Canada or in the European Union. France or Paris or as close as possible, always preferred.

Remote | Full-time

Compensation: $160K - $240K

Our client is an industry-leading organization comprised of experts in blockchain technology, cryptography, infrastructure, and security. The organization is currently developing the foundational wallet infrastructure for the next generation of global finance.

The Senior Software Engineer will design, develop, and scale core backend services for a high-performance platform. This role involves full ownership of critical projects—ranging from APIs and microservices to databases and developer tooling—ensuring all systems remain fast, reliable, and secure. Beyond hands-on engineering, this individual will contribute to architectural decisions, refine development processes, and ensure infrastructure resilience under real-world financial workloads. This position requires close collaboration with product, security, and leadership teams to transform complex requirements into elegant, production-ready systems.

Key Responsibilities

Gritter Francona is looking for a Cyber Threat Hunt Lead to support a potential project with the Department of Homeland Security. The Threat Hunt Lead will build and guide a proactive threat hunting capability for the Department of U.S. Customs and Border Protection (CBP). The Threat Hunt Lead will direct a specialized team in proactively searching for malicious activity across CBP networks that evades traditional security solutions. This role requires an offensive mindset, deep knowledge of attacker TTPs, and expert-level skills with SIEM and endpoint management tools. The Threat Hunt Lead will be responsible for developing hunt hypotheses, executing hunt missions, and coordinating with the SOC to create new detections based on your findings.

Key Responsibilities:

• Lead the CTH team to proactively and iteratively conduct threat hunting efforts against CBP networks, systems, and high value assets to detect and isolate advanced threats.

• Utilize threat models and Cyber Threat Intelligence to formulate hypotheses about attacker activity on CBP networks and systems to investigate during formal hunt missions.

• Propose corrective actions and inform necessary parties of security issues, reportable offenses, or cybersecurity best practices.

• Work with the CBP SOC to create new security content, including signatures and detection alerts, resulting from hunt missions and Purple Team engagements.

Employment: Full-time via MLabs
Engagement: Contracted to a UAE-based enterprise blockchain / fintech client
Location: Remote (Eastern Europe / MENA / India preferred)

MLabs is hiring a Senior Protocol Engineer to contribute to the core infrastructure of a custom Layer-1 blockchain ecosystem supporting enterprise-grade financial systems.

You will work at the protocol layer, contributing to consensus mechanisms, node architecture, networking, and system-level performance. This role requires deep distributed systems expertise and hands-on experience working on blockchain infrastructure rather than application-layer smart contracts.

The ideal candidate is comfortable operating in performance-critical, security-sensitive environments and contributing to protocol evolution discussions.

Responsibilities

• Design and implement core blockchain protocol components
• Contribute to consensus performance, scalability, and reliability improvements
• Optimize node performance and system-level efficiency
• Work on P2P networking and state synchronization mechanisms
• Identify and mitigate protocol-level vulnerabilities
• Collaborate with smart contract, infrastructure, and backend teams
• Participate in architecture reviews and protocol evolution discussions

Requirements

Senior Firmware Engineer (Blockchain Hardware)

Location: Based UTC -9 and +1

Compensation: $120K - $165K

We are looking for a Senior Firmware Engineer to develop, design, and optimize firmware for our cutting-edge cryptocurrency hardware wallets. In this role, you will be at the intersection of high-stakes security and embedded systems, collaborating closely with hardware and software teams to deliver secure, reliable, and highly efficient firmware solutions.

You will be responsible for the "brain" of our devices, ensuring that our users' digital assets are protected by battle-tested code. From architecting multi-threaded applications to ensuring seamless hardware-software compatibility, you will play a vital role in maintaining and improving both current and next-generation security devices.

Key Responsibilities:

Senior Backend Engineer (Rust/C++ – DeFi & Fintech)

Location: Fully Remote - EU timezone Type: Full-Time

Compensation: Competetive

We are hiring on behalf of our client who is looking for a Senior Backend Engineer to lead the architecture and development of the core systems powering a next-generation decentralized exchange (DEX) and network. This is a high-impact role where you will go beyond writing code—you will design resilient, secure, and low-latency systems capable of processing high-frequency trading data in real time.

They are a dynamic, fully remote team with an ambitious roadmap and a relentless drive to redefine the future of finance. The ideal candidate thrives at the intersection of DeFi, Systems Engineering, and High-Performance Computing. If you have a deep commitment to code quality and a passion for building mission-critical infrastructure, we want to hear from you.

Key Responsibilities:

Azumo is looking for a versatile and experienced Rust Senior Software Engineer to join our team. You will work focused on the identity space, contributing to the design, development, and maintenance of a full suite of Edge software. The position is based remotely in Latin America.

This position will give you the opportunity to collaborate with a growing team of bright engineering minds. You will enjoy the role if you are a well-rounded engineer comfortable working across different technologies, ready to own entire projects from start to finish, and eager to develop a new security product for a large market from the ground up.

While the core components are primarily written in Rust, we value engineers with diverse language backgrounds (such as C# or Go) who can adapt and contribute effectively to the technology stack.

Requirements

Basic Qualifications:

Principal Software Engineer, Backend Infrastructure (Remote, US)

Location: US (remote-first, office optional), will consider strong profiles from Canada. EST preferred.

Compensation: $220K - $300K

Are you a technical leader ready to build the next generation of financial infrastructure?

Join a stellar team of leaders and experts in blockchain technology, cryptography, infrastructure, and security to build the backbone of secure, resilient systems for the evolving financial era. Our client is hiring a Principal Software Engineer to lead the design, development, and scaling of their core backend systems. This is a high-impact, remote-first role for someone who excels at setting technical direction and owning critical projects end-to-end.

As a Principal Software Engineer, you will be more than just a coder; you will be a key driver of technical strategy and execution. You will own mission-critical projects while setting the technical direction and ensuring their platform is fast, resilient, and secure under the high-stakes demands of financial workflows.

Senior Infrastructure Engineer - High-Performance Blockchain Services

Location: New York, San Francisco (Office)

Compensation: $200K - $400K

Join the Infrastructure & Platform team at a high-growth crypto derivatives exchange that is rapidly capturing market share in a multi-billion dollar annual sector. Our clients current focus is on building a multi-asset margin feature that leverages blockchain technology to allow users to post variable forms of collateral, which is essential as multi-asset margin comprises over 86% of crypto accounts.

You will play a pivotal role in designing, architecting, and deploying highly reliable, scalable blockchain services with lightning-fast performance. You will lead the development of mission-critical core infrastructure that powers their products, enabling them to bring financial venues directly to the user.

The Senior Infrastructure Engineer will be responsible for building the core components of a high-throughput, low-latency distributed system, focusing heavily on performance and cryptographic integrity.

About Us

At Zyte, we eat data for breakfast and you can eat your breakfast anywhere and work for Zyte. Founded in 2010, we are a globally distributed team of over 250 Zytans working from over 28 countries who are on a mission to enable our customers to extract the data they need to continue to innovate and grow their businesses. We believe that all businesses deserve a smooth pathway to data.

For more than a decade, Zyte has led the way in building powerful, easy-to-use tools to collect, format, and deliver web data, quickly, dependably, and at scale. And today, the data we extract helps thousands of organizations make smarter business decisions, secure competitive advantage, and drive sustainable growth. Today, over 3,000 companies and 1 million developers rely on our tools and services to get the data they need from the web.

Zyte is seeking an experienced Team Lead to manage our Core & MLOps Squad, responsible for "Building the bedrock infrastructure that powers Zyte at scale." This hands-on technical leadership role requires expertise across MLOps, systems programming, and orchestration to lead a cross-functional team in designing and maintaining the scalable foundation that enables all Zyte teams to build and run their services with confidence.

Requirements

About Us

At Zyte, we eat data for breakfast and you can eat your breakfast anywhere and work for Zyte. Founded in 2010, we are a globally distributed team of over 250 Zytans working from over 28 countries who are on a mission to enable our customers to extract the data they need to continue to innovate and grow their businesses. We believe that all businesses deserve a smooth pathway to data.

For more than a decade, Zyte has led the way in building powerful, easy-to-use tools to collect, format, and deliver web data, quickly, dependably, and at scale. And today, the data we extract helps thousands of organizations make smarter business decisions, secure competitive advantage, and drive sustainable growth. Today, over 3,000 companies and 1 million developers rely on our tools and services to get the data they need from the web.

Zyte is seeking an experienced Team Lead to manage our Core & MLOps Squad, responsible for "Building the bedrock infrastructure that powers Zyte at scale." This hands-on technical leadership role requires expertise across MLOps, systems programming, and orchestration to lead a cross-functional team in designing and maintaining the scalable foundation that enables all Zyte teams to build and run their services with confidence.

Requirements