Senior Backend Engineer

Location: US or Europe (Must have solid overlap with EST)

Remote | Full-time

Compensation: $150K - $200K

Our client is an industry-leading DeFi organization building the next generation of trading infrastructure. Operating as the largest builder-code product on a major decentralized exchange protocol, the company has processed over $65B in cumulative trading volume and generated eight-figure revenue over the past year. With a user base exceeding 400,000 registered traders, the platform is at the forefront of democratizing access to global financial markets across crypto, equities, and commodities.

The organization operates as a lean, highly technical team of individual contributors who prioritize autonomy, ownership, and rapid execution. This environment is designed for a Senior Backend Engineer who thrives in 0-to-1 environments and is capable of building ambitious systems from the ground up. This role is central to scaling trading interfaces that manage billions of dollars in daily volume while maintaining high-speed, intuitive user experiences.

Key Responsibilities

Location: San Francisco, CA, US

On-site | Full-time

Compensation: $170K - $230K•0.15% - 0.30%

A high-growth, venture-backed startup based in San Francisco is seeking an ambitious Full Stack Engineer to join their engineering-driven team. This is a role for an individual who thrives in high-stakes, fast-paced environments where code deployed one night is demoed to thousands the next morning.

Our client provides an agentic Operating System for sales that closes the loop between coaching and execution. Having recently secured a $15M Series A and experiencing 5x ARR growth year-over-year, the organization is scaling rapidly. The engineering culture is defined by radical ownership, speed, and technical excellence. The team is composed of former founders and high-achievers who prioritze impact over process.

This role is strictly on-site five days a week in San Francisco. It is designed for an engineer with "something to prove" who is looking to operate with massive autonomy during a period of hyper-growth.

Key Responsibilities

Location: San Francisco or worldwide

On-site/Remote | Full-time

Compensation

• Full Stack Engineer (remote Worldwide) -$100K – $180K • 0.05% – 0.25%
• Full Stack Engineer (Onsite in San Francisco) - $140K – $200K • 0.05% – 0.25%
• Senior Full Stack (Remote in the US) - $180K – $250K • 0.05% – 0.25%

Our client is a high-growth security startup building the open-source infrastructure used by developers worldwide to manage sensitive configurations and credentials. Backed by premier Silicon Valley investors, the company is on a mission to simplify security for the AI era, currently supporting billions of secure transactions every month.

The team are seeking an exceptional Full Stack Engineers and Senior Full Stack Engineers to join the team. In this role, you will work closely with the CTO to build, optimize, and expand the foundation of a global security platform. This position is ideal for an engineer who wants to be a defining piece of a team scaling toward massive market adoption over the next 18 months.

Key Responsibilities

Front End Engineer (Product Engineer)

Location: New York, NY

On-Site | Full-time

Compensation: $200K/yr - $325K/yr

Our client is a high-growth fintech firm building the next generation of trading and portfolio management technology. Founded by industry veterans from top-tier quant shops, the organization has secured over $100M in funding to rethink how financial institutions manage trillions in assets. The core product suite handles everything from high-throughput market data to complex portfolio optimization. Our client is looking for a driven Engineer to help build the performant, data-rich interfaces that power these mission-critical workflows.

You will own the user experience for platforms that handle massive data scale and complex financial operations. This isn't just about building "dashboards"—it's about engineering intuitive interfaces for real-time position tracking, smart order routing, and high-cardinality optimization.

Key Responsibilities

Design Engineer

Location: Based in San Francisco or North or South America

Onsite or Remote | Full-time

Compensation

• Design Engineer (Onsite in San Francisco) - $140K – $200K • 0.05% – 0.25%
• Design Engineer (remote in the Americas) - $100K – $180K • 0.05% – 0.25%

Our client is a high-growth, venture-backed organization building a generational open-source security infrastructure platform for the AI era. Trusted by engineers at world-class companies such as Hugging Face and LG, the platform manages billions of secrets, certificates, and credentials every month.

The engineering team are seeking talented Design Engineers based in either the Americas or San Francisco to own and elevate the user-facing experience of this rapidly growing platform. Our client views developer experience as a core product philosophy and obsesses over intuitive design and polished interfaces. This role is ideal for a deeply technical individual who possesses a sharp eye for aesthetics and the ability to build features end-to-end, with a heavy focus on frontend excellence (approximately 70%) and a supporting contribution to the backend (approximately 30%).

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

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

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

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

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