Senior Backend Engineer (Node.js/TypeScript)

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

Compensation: €90K - €130K

We are simplifying multi-chain DeFi for traditional financial institutions, fintechs, and service providers. By offering a unified API to access all on-chain liquidity across major blockchains, we enable the best price for same-chain and cross-chain swaps. We are a passionate team on a mission to enable a fairer, more decentralized world, with a heavy focus on making complex technologies accessible through superior user experience.

We are looking for multiple Senior Backend Engineers to lead the design, development, and maintenance of our backend systems. You will ensure our infrastructure is robust, scalable, and secure while collaborating closely with cross-functional teams—including frontend developers, product managers, and designers—to deliver high-quality software solutions.

This role reports directly to our Backend Lead. Our current tech stack includes:

• Node.js running TypeScript in Docker containers
• MongoDB and Redis for data and caching
• ethers.js for blockchain communication
• GitHub, Kubernetes, AWS, and CloudFlare for our GitOps CD chain

Frontend Software Engineer
Location: San Francisco

Hybrid | Full-time

Compensation: $160K – $300K • Offers Equity

We are a high-growth, venture-backed startup that has invented a better way to do research: AI-powered user interviews. Our platform allows global brands—including some of the world’s largest tech and consumer companies—to achieve deeper, qualitative insights at unprecedented speed and scale.

The $140B+ research industry is ripe for disruption, and we are leading the charge. We recently closed a $30M Series B (led by top-tier Silicon Valley investors) following a year where our business grew 8x. We are a tight-knit team of 30 based in San Francisco’s Financial District, and we are looking for a Senior Frontend Engineer to help us define the new standard for understanding people.

The Role

In this role, you won’t just be writing code; you will be a key architect of our user experience. You will collaborate directly with our CTO and CEO to translate complex AI interactions into intuitive, world-class interfaces.

Key Responsibilities

Staff Software Engineer (Backend)

Location: San Francisco, New York, or Remote (US)

On-site/Remote| Full-time

Compensation: $225K – $300K 

We aren't building another chatbot or a "copilot" to sit on a sidebar. We are building the next generation of the workforce: Autonomous AI Employees.

Our flagship product is an AI Business Development Representative (BDR) that doesn't just assist a sales team—it joins it. She researches leads, manages her own deliverability infrastructure, handles objections, and books meetings autonomously. With over $8M ARR, $35M+ in funding (including Y Combinator), and a rapidly growing customer base, we are now tackling the engineering mountain of "Ava 2.0." We are looking for foundational engineers to build the backend orchestration that makes autonomous digital workers a reality.

The Role

As a Staff Software Backend Engineer, you will build the engine that allows AI employees to think, act, and evolve. This is a high-leverage role where you will own major portions of a platform that replaces an entire enterprise sales stack—including CRM, lead databases, and campaign engines—within a single product.

Key Responsibilities

Member of Technical Staff (Infrastructure)
On-site | Full-time
Compensation: $140K-$200K (CA$190K – CA$280K)

We are building the open-source browser infrastructure that powers the next generation of AI agents. With over 6,000 GitHub stars and millions of sessions served monthly, our platform grew 50x in 2025 alone. We provide the "eyes and ears" for AI, allowing developers to ship products that interact with the web seamlessly via our API.

As one of our first ten employees, you will join a high-performance, talent-dense team of four. We are backed by world-class investors and focused on solving the hardest problems in distributed systems, from kernel-level debugging to global VM orchestration.

The Role

As a Member of Technical Staff, you will build and scale the distributed systems that power millions of browser sessions. Browsers are notoriously resource-heavy; your mission is to make them fast, ephemeral, and globally accessible. You will work across the stack, but your primary focus will be on the core infrastructure that ensures sub-second startup times and robust multi-tenant isolation.

Key Responsibilities:

Member of Technical Staff (Applied AI Engineer)
Location: Toronto

Onsite | Full-time

Compensation: $140K - $260K

We are building the open-source browser infrastructure that powers the next generation of AI agents and applications. By providing a high-performance Sessions API, we enable developers to build products that interact with the web as seamlessly as humans do.

After growing our platform 50x in 2025 through pure word-of-mouth and a vibrant open-source community (6,000+ GitHub stars), we are looking for an engineer to help us define the frontier of browser automation. We are a small, talent-dense team backed by world-class investors, and we move with high intensity to shape the future of the internet.

The Role

You will sit at the intersection of product, research, and community. This isn't a traditional ML role or a pure DevRel role—it’s both and neither. You will be the bridge between AI agent builders and our core infrastructure, working directly with the founding team to define what gets built.

You will run experiments to determine what actually works for browser automation with AI, then turn those insights into frameworks, research, and content that developers love. We work hard, move fast, and expect the same intensity from our team; late nights and weekend work are part of the journey when building something exceptional.

Forward Deployed Engineer
Location: New York or San Francisco (with frequent travel to customer sites)

On-site | Full-time

We are not building chatbots or copilots; we are building autonomous digital workers. Our first AI employee, Ava, is already functioning as a full-scale teammate for hundreds of companies—managing lead research, outbound sequences, and meeting bookings autonomously.

As a YC-backed company with over $35M in funding and $8M+ ARR, we are currently scaling our "AI worker" ecosystem. We are looking for a Forward Deployed Engineer to act as the technical bridge between our product and our most strategic customers.

The Role

In this role, you will be part engineer, part consultant, and part trusted advisor. You will sit at the intersection of Sales, Success, and Product to ensure our AI employees integrate seamlessly into complex enterprise environments.

Key Responsibilities:

Staff Full Stack Engineer
Location: New York

On- site | Full-time

We are the development powerhouse behind the world’s largest memecoin launchpad. Our systems are defined by low latency, high throughput, and constant load—built for an environment where precision is non-negotiable and the stakes are incredibly high.

The Role

We are looking for a Staff Full Stack Engineer to architect and scale the next generation of crypto-social finance. This isn't a "business as usual" role; we operate at the edge of what’s possible in Web3, and we need someone who thrives when the pressure is on.

What You'll Do:

Senior Staff Backend Engineer

Location: Manhattan, New York

Onsite | Full-time

We are the development powerhouse behind one of the largest and most high-traffic platforms in the digital asset space. Currently processing ~$1B in daily volume, our 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 our 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 & Lead Frontend Engineers (React / TypeScript)

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 Frontend Engineers to support a large-scale financial technology program for a UAE-based enterprise client. You will build secure, high-performance web applications within a regulated financial environment. This role focuses on modern frontend architecture, scalable UI systems, and seamless integration with backend and blockchain services. Lead-level candidates will drive frontend architecture decisions and mentor distributed engineering teams.

Responsibilities

• Design, develop, and maintain scalable web applications using React and TypeScript
• Implement clean, modular, and testable frontend architecture
• Integrate frontend systems with secure backend APIs
• Optimize performance, responsiveness, and cross-browser compatibility
• Collaborate with backend, mobile, and blockchain teams
• Participate in code reviews and enforce frontend best practices
• Lead Engineers: guide architecture, mentor developers, and drive technical standards

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