Senior Full Stack Engineer

Role Description

We are looking for a Senior Full Stack Engineer with 5+ years of experience to build customer-facing products that help investigators and analysts fight crypto-related financial crime. You're someone who has led features from 0 to 1 at a high-growth startup, thrives in ambiguity, and deeply cares about the customer experience. You'll work across the stack (60% backend, 40% frontend), designing APIs and shaping the product journey for non-technical users, such as intelligence analysts.

• Building customer-facing products, APIs, and services used at scale
• Leading features from concept through delivery with a high degree of ownership
• Designing scalable systems and APIs that support growing customer demand
• Collaborating with product and customers to turn business challenges into technical solutions
• Contributing across the stack, with a focus on backend development and product delivery

Qualifications

• 5+ years of full-stack software engineering experience
• Proven experience building and launching products or major features from 0→1 within a high-growth startup environment
• Strong experience designing and shipping production-grade customer-facing APIs
• Strong system design and architecture skills
• Commercial experience with React and TypeScript/JavaScript-based applications
• Experience working with relational databases such as PostgreSQL and large-scale data platforms
• Track record of taking ownership and delivering impactful products with limited direction
• Ability to work directly with customers and translate user needs into product requirements
• Comfortable operating in fast-changing, ambiguous environments
• Regular user of AI tools to improve engineering productivity and workflows

Requirements

• Experience building Enterprise SaaS products (Nice to Have)
• Experience creating products for analysts, operations teams, or other non-technical users (Nice to Have)
• Exposure to data-intensive or highly regulated industries (Nice to Have)

Not the Right Fit If...

• You prefer highly structured environments over fast-moving startups.
• You haven't built and shipped customer-facing APIs in production.
• You're looking for a purely frontend or backend role rather than full-stack ownership.
• You prefer defined requirements over helping shape products from the ground up.
• You're uncomfortable working through ambiguity and evolving priorities.

Benefits

• Base salary: $211,000–$250,000
• Significant equity package
• Fully remote across the Americas (No New Visa Sponsorship available, H1B transfer only)
• Opportunity to join a high-growth, mission-driven business with strong product-market fit
• Build products that solve complex, real-world challenges