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

Location: Remote - European Based Candidates

Remote | Full-time

Compensation: Competitive

We are hiring on behalf of our client who is focused on building institutional-grade DeFi operations infrastructure. They are seeking a Senior Operations Engineer. This organization develops the systems, automations, and security layers required to make on-chain asset management reliable at scale. Operating across Ethereum, Arbitrum, and multiple other chains, the client manages vaults, multisigs, and treasury systems where precision is paramount.

This is not a "build-and-hand-off" role. The successful candidate will own the full lifecycle of critical automation infrastructure—from architecture and implementation to monitoring, failure handling, and continuous hardening. This individual will be responsible for the reliability, security, and observability of systems where the standard is absolute: operational errors result in real financial loss.

Key Responsibilities

Head of B2B Sales & Business Development (Web3 / DeFi)

Location: Remote in EU

Remote | Full-time

Compensation: $50K - $70K

Our client is a high-performance DeFi Trading & Intelligence platform purpose-built for the Solana ecosystem. The organization delivers institutional-grade on-chain analytics, smart-money flow detection, social sentiment tracking, and fraud prevention via a sophisticated B2B API. Their technology processes hundreds of millions of blockchain transactions in real time, powering critical risk detection and market insights across fast-moving decentralized markets.

As tokenized real-world assets—including equities and commodities—increasingly migrate on-chain, our client is extending its intelligence stack beyond native crypto into the next generation of decentralized financial markets. To lead this expansion, the firm is seeking a hands-on, crypto-native Head of B2B Sales & Business Development to build the entire commercial function from the ground up. This is a "zero-to-one" leadership role with full ownership over go-to-market strategy, pricing models, and vertical expansion.

Key Responsibilities

Senior Backend Engineer

Location: EMEA / EU Hours - Authorised to work in EMEA

Remote | Full-time

Compensation: €90K - €130K

Our client is a high-growth fintech leader specializing in simplifying multi-chain DeFi for traditional financial institutions, fintechs, and service providers. By offering a unified API, the platform provides seamless access to on-chain liquidity across all major blockchains for optimized same-chain and cross-chain swaps. The organization is on a mission to enable a fairer, decentralized world while prioritizing exceptional user experiences to make complex technologies accessible to a global audience.

The organization is seeking multiple Senior Backend Engineers to lead the design, development, and maintenance of robust, scalable, and secure backend systems. Reporting to the Backend Lead, the successful candidates will collaborate with cross-functional teams— including frontend developers, product managers, and designers—to deliver high-quality software solutions. The technical environment utilizes a modern stack including Node.js (TypeScript), MongoDB, Redis, and ethers.js, supported by a GitOps CD chain involving Kubernetes and AWS.

Key Responsibilities

Staff Full Stack Engineer

Location: New York

On- site | Full-time

Compensation: Competitive

Our client is a premier development organization responsible for building and operating a high-stakes technology stack that powers one of the largest and most active token launchpads in the decentralized finance (DeFi) ecosystem. The systems involved are engineered for low latency and high throughput, operating under constant, significant load where precision and system reliability are critical.

The organization is seeking a Full Stack Engineer to play a vital role in scaling cutting-edge platforms at the intersection of cryptocurrency and social finance. This individual will work across the entire technical stack to deliver high-performance, user-centric applications. The environment is characterized by an intense pace, high expectations, and immediate real-world impact. This role is ideal for a high-agency engineer who thrives on ownership and is motivated by the challenge of building products used by massive, global audiences.

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 Security Engineer
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 Security Engineer to support a large-scale blockchain and financial technology program for a UAE-based enterprise client.
You will be responsible for securing smart contracts, blockchain integrations, and protocol-level components within a custom enterprise blockchain ecosystem. This role requires deep expertise in smart contract vulnerabilities, secure architecture design, and threat modeling in decentralized systems.
The ideal candidate has hands-on experience auditing smart contracts and identifying vulnerabilities in production blockchain environments.

Responsibilities

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