Location: Toronto, CA

On-site | Full-time

Compensation: 130K-170K (CA$180K – CA$225K)

We are hiring on behalf of our client who is an innovative infrastructure provider building open-source browser solutions specifically designed for AI agents and applications. The platform enables developers to deploy AI products that interact seamlessly with the web through a high-performance Sessions API. Having experienced 50x growth in the past year and serving millions of sessions monthly, the organization is backed by premier investors and maintains a significant open-source presence.

The organization is seeking highly skilled engineers to design, build, and maintain the novel, high-performance systems that power the platform. This role involves solving complex problems at the intersection of browser technology and cloud infrastructure, such as orchestrating millions of sessions across global regions with sub-second cold starts and engineering VM snapshotting for near-instant state restoration.

Key Responsibilities

Senior Staff Backend Engineer

Location: Manhattan, New York

Onsite | Full-time

We are hiring on behalf of our client who is the development powerhouse behind one of the largest and most high-traffic platforms in the digital asset space. Currently processing ~$1B in daily volume, their technology stack handles low-latency, high-throughput, and constant load at a scale few companies ever reach.

The Role

In this role, you will act as a technical anchor, overseeing the integrity and evolution of their core backend systems. You will balance high-level architectural governance with deep-tier execution, driving technical excellence from the front. Your primary focus will be the proactive mitigation of scaling risks and the design of durable, fault-tolerant systems capable of sustaining high-throughput workloads.

What You’ll Do:

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

Job Description
MLabs is hiring a Senior Blockchain DevOps Engineer to support a large-scale blockchain and financial technology program for a UAE-based enterprise client.
You will be responsible for deploying, maintaining, and scaling blockchain infrastructure in production environments. This role combines modern DevOps practices with blockchain node operations, automation, and high-availability system design.
The ideal candidate has hands-on experience operating blockchain nodes and managing secure, production-grade infrastructure in distributed environments.

Responsibilities

• Deploy, configure, and maintain blockchain nodes and supporting infrastructure
• Design and manage CI/CD pipelines for blockchain and backend services
• Automate infrastructure using Infrastructure as Code tools
• Ensure high availability, scalability, and security of blockchain systems
• Monitor system performance and troubleshoot distributed environments
• Implement logging, monitoring, and alerting solutions
• Collaborate with protocol, smart contract, backend, and security teams

Requirements

Senior & Lead QA Automation Engineers

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

MLabs is hiring Senior and Lead QA Automation Engineers to support a large-scale financial technology program for a UAE-based enterprise client. You will be responsible for designing and implementing automated testing frameworks across web, mobile, backend, and blockchain-integrated systems. The role requires a strong automation-first mindset and experience working in enterprise or regulated environments. Lead-level candidates will drive QA strategy, establish automation standards, and mentor distributed QA teams.

Responsibilities

• Design, develop, and maintain automated test frameworks
• Implement API, UI, and integration test automation
• Collaborate with engineering teams to ensure test coverage across backend and frontend systems
• Develop and maintain CI/CD-integrated test pipelines
• Identify, document, and track defects in complex distributed systems
• Improve testing strategies to ensure scalability, security, and performance
• Lead Engineers: define QA strategy, mentor QA engineers, and drive quality standards across teams

Requirements

Senior & Lead Java Engineers

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

MLabs is hiring experienced Senior and Lead Java Engineers to support a large-scale financial technology program for a UAE-based client. Engineers will work on enterprise backend systems integrated with blockchain infrastructure. The role focuses on building scalable, high-performance services in a distributed environment. Exposure to smart contracts and blockchain technologies is highly desirable. Lead-level candidates will provide technical leadership and mentor distributed teams.

Responsibilities

• Design, develop, and maintain scalable Java-based backend services
• Build and integrate RESTful APIs within a microservices architecture
• Collaborate with cross-functional teams to deliver high-quality solutions
• Optimize system performance, reliability, and security
• Contribute to blockchain integration and smart contract interaction (where applicable)
• Participate in code reviews and uphold engineering best practices
• Lead Engineers: provide technical guidance, mentor team members, and support architectural decisions

Requirements

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

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 L2 Engineer to contribute to the design and development of Layer-2 scaling solutions within a custom blockchain ecosystem supporting enterprise-grade financial systems.

You will work on rollup mechanisms, transaction batching, cross-layer communication, and performance optimization between Layer-1 and Layer-2 environments. This role requires strong blockchain systems knowledge with a focus on scalability, execution logic, and security. The ideal candidate has hands-on experience building or contributing to Layer-2 or scaling infrastructure in production environments.

Responsibilities

• Design and implement Layer-2 scaling components
• Contribute to rollup architecture and transaction batching logic
• Develop cross-layer communication and bridging mechanisms
• Optimize throughput and latency across blockchain layers
• Ensure correctness and security of L2 state transitions
• Collaborate with protocol, smart contract, and infrastructure teams
• Participate in architecture discussions and performance reviews

Requirements

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 Frontend Engineer (Web3) to support a large-scale blockchain and financial technology program for a UAE-based enterprise client.

You will build secure, high-performance web applications that integrate directly with blockchain infrastructure. This role combines modern frontend engineering with decentralized technologies, requiring strong expertise in React and Web3 integrations. The ideal candidate has hands-on experience integrating smart contracts, wallet providers, and on-chain data into production-grade web applications.

Responsibilities

• Develop and maintain Web3-enabled frontend applications using React and TypeScript
• Integrate smart contracts using Web3 libraries (e.g., ethers.js, web3.js)
• Implement wallet connectivity and transaction flows
• Handle on-chain data fetching and real-time state updates
• Ensure secure and reliable interaction between frontend and blockchain layers
• Optimize performance and user experience in decentralized environments
• Collaborate closely with smart contract, protocol, and backend teams

Requirements

Senior Talent Acquisition Recruiter

Location: US based candidates are the preference / Would consider Europe if they have some overlap with EST

Compensation: $150K - $200K

We help enterprises transform fragmented data into governed, high-confidence intelligence without sacrificing control. By bringing compute to the data through a private data lakehouse and a secure contextual AI framework, we enable organizations to audit, verify, and monetize their most valuable assets.

As a Senior Technical Recruiter, you aren’t just "filling roles"—you are the architect of our human capital. We are building at the complex intersection of AI, blockchain, and enterprise infrastructure. Finding the top 1% of talent who can navigate this space requires more than a standard search; it requires deep discovery, technical empathy, and a "product mindset" toward recruiting. You will partner directly with leadership to build a world-class engineering and go-to-market engine from the ground up.

Key Responsibilities:

Software Engineer (Java Generalist)

Location: US - Open to Europe if happy to overlap with EST

Compensation: $160K - $200K

Our firm has been retained by a high-growth, mission-driven technology company to find a world-class Principal Java Systems Engineer. This is not a role for "glue" engineers who connect off-the-shelf components; this is for the engineer who sees performance ceilings as a personal challenge and prefers squeezing 30% more throughput out of clean Java over renting 30% more cloud compute.

Our client is building a high-performance, publicly visible immutable ledger. In an industry where people "move fast and break things," this team operates like NASA: moving fast while ensuring correctness, performance, and efficiency are 100% right the first time. You will join an elite team where you aren't a cog in the machine—you are the architect building it.

Key Responsibilities: