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

Our client is a high-growth, venture-backed technology firm based in San Francisco that is revolutionizing the global research industry through AI-powered user interviews. By utilizing proprietary AI-moderated technology, the platform enables premier global brands to achieve deep qualitative insights at unprecedented speed and scale. Currently serving a roster of the world’s largest enterprises, our client is disrupting a $140B market by replacing slow, high-cost legacy services with high-performance automated solutions.

Following a breakout year characterized by 8x growth, the organization recently secured a $30M Series B funding round led by top-tier Silicon Valley investors. The engineering team is currently scaling its headcount to support the rapid adoption of AI-moderated research as the new industry standard. This is a high-impact opportunity for a Frontend Software Engineer to join a lean, elite team of 30 and take foundational ownership of the user-facing systems that define the product experience.

Key Responsibilities

Founding Marketer

Location: New York City

On-site | Full-time

Compensation: $120K - $200K

Our client is a high-growth fintech firm building the global account layer that powers the modern financial stack. As companies expand internationally, financial operations often become fragmented and fragile; our client provides the infrastructure that turns these operations into a driver for revenue and growth. With significant traction and a mission to build the financial primitives for the world’s largest global platforms, the organization is seeking its first marketing hire to shape and scale its narrative.

Based in New York City, this is a "zero-to-one" role for an execution-obsessed marketer. The successful candidate will work directly with the founders to write the marketing playbook, focusing simultaneously on the U.S. and Latin American markets. This role is responsible for driving revenue through high-impact events, a sharp social presence, and strategic content that speaks directly to CTOs, finance leads, and founders.

Key Responsibilities

Events & Conferences

Software Engineer (Backend & AI Infrastructure)

Location: San Francisco, CA

Hybrid | Full-time

Compensation: $160K – $300K + Equity

Our client is a venture-backed technology firm based in San Francisco that is redefining the global research industry through AI-powered user interviews. By leveraging advanced AI-moderated technology, the platform enables global enterprises to achieve deep qualitative insights at unprecedented speed and scale. Currently serving world-class brands across the technology and consumer sectors, our client is disrupting a $140B market by replacing slow, high-cost legacy services with high-performance automated solutions.

Following a breakout year characterized by 8x growth, the organization recently secured a $30M Series B funding round led by top-tier Silicon Valley investors. The engineering team is currently scaling to support the rapid adoption of AI-moderated research as the new industry standard. This is a high-impact opportunity for a Backend Software Engineer to join a lean, elite team of 30 in San Francisco and take ownership of mission-critical infrastructure.

Key Responsibilities

Staff Software Engineer (Backend)

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

On-site/Remote| Full-time

Compensation: $225K – $300K 

Our client is a high-growth, venture-backed organization (YC W24) that has raised over $35M to pioneer the next generation of autonomous digital workers. Unlike traditional chatbots or copilots, our client builds fully autonomous "AI employees" that research leads, manage complex outbound sequences, handle deliverability infrastructure, and self-optimize through behavioral patterns.

Currently at $8M+ ARR and scaling rapidly, the organization is deep in the development of its next-generation platform—a step change in the capabilities of AI agents. The backend is the core of this transformation, processing millions of signals to facilitate autonomous decision-making. Our client is seeking a Staff Software Engineer to serve in a foundational role, owning major segments of the platform infrastructure and driving high-throughput AI orchestration. The engineering culture is flat, high-velocity, and results-oriented. There is no red tape; engineers are expected to own outcomes end-to-end, from architecture and design to deployment and monitoring.

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

Our client is a venture-backed, high-growth organization (YC W24) that has raised over $35M to pioneer the development of autonomous "AI employees." Unlike traditional chatbots or copilots, our client builds digital workers capable of performing end-to-end professional roles, such as automated business development, lead research, and objection handling. Currently at $8M+ ARR and scaling rapidly, the organization is seeking a Forward Deployed Engineer (FDE) to serve as the critical bridge between their advanced AI technology and their most strategic enterprise customers.

The Forward Deployed Engineer operates at the intersection of engineering, consulting, and advisory. This individual will partner with Sales, Customer Success, and Product teams to ensure that the platform is seamlessly integrated into customer environments to drive measurable ROI. This is a foundational role within a new function directly overseen by the CEO, requiring a blend of deep technical proficiency and high-level strategic communication. This position is based on-site in New York City and requires frequent travel (up to 50%) to customer sites for discovery, scoping, and onboarding.

Key Responsibilities

Applied AI Engineer

Location: San Francisco, New York, or Remote USA

Onsite/Remote| Full-time

Our client is a high-growth, venture-backed organization (YC W24) that has raised over $35M to pioneer the development of autonomous "AI employees." Moving beyond the era of simple chatbots and copilots, our client builds digital workers capable of performing end-to-end professional roles—conducting research, managing outbound communications, navigating deliverability infrastructure, and handling complex objection management autonomously.

Currently at $8M+ ARR and scaling rapidly, the organization is seeking its third Applied AI Engineer to join a foundational team. This role is central to pushing the boundaries of autonomous agent behavior and will directly influence the product direction during the development of their next-generation AI platform. The engineering challenges involve managing enormous surface areas and solving complex problems related to multi-step reasoning, real-time adaptation, and human-like interaction.

Key Responsibilities

Founding Engineer

Location: New York, NY

On-site | Full-time

Compensation: $150K - $350K

Our client is a high-growth, venture-backed startup on a mission to reinvent technical interviewing and transform the global $600B+ staffing industry. By moving beyond traditional "LeetCode" style evaluations, our client has developed a fundamentally better way for companies to identify talent, combat fraud, and market top-tier candidates to Fortune 500 organizations.

The organization is currently at an ideal inflection point: they have moved past product-market fit and are entering a rapid scaling phase. Backed by a $3.1M seed round from premier investors—including GSV Ventures, BoxGroup, and angels from OpenAI, SpaceX, and Retool—the company has already surpassed seven figures in revenue. Their customer base includes dozens of enterprise staffing firms, including the largest staffing firm in the world.

Our client is seeking a Founding Engineer to join a talent-dense team of seven hailing from institutions and companies such as Stanford, Penn, Waterloo, Retool, and MongoDB. This is a high-impact role for a builder who wants to own critical systems and define the technical standards for an entire industry.

Key Responsibilities