Full Stack Software Engineer

Pure (YC S23); Los Angeles (CA); On-site; USD 145,000 - 250,000; Full time

Benefits offered by this job

Flexible work arrangements

Health coverage & insurance

401(k) with employer match

Daily lunches

Wellness stipend

Job summary

A leading technology firm in Los Angeles is seeking a Mid-Senior Full-Stack Engineer to lead critical features and enhance the marketplace backend. Candidates should have 3+ years of experience with TypeScript, Next.js, Node.js, and PostgreSQL. The position offers remote or hybrid work arrangements and a competitive salary range of $145K–$250K.

Qualifications

• 3+ years of full-stack engineering experience, particularly in startup environments.
• Strong front-end experience with TypeScript and Next.js.
• Strong backend experience with Node.js and PostgreSQL.

Responsibilities

• Lead and own critical features and subsystems end-to-end.
• Build and maintain the marketplace backend.
• Develop and improve internal tools for operations and monitoring.

Skills

Full-stack engineering

TypeScript

Next.js

PostgreSQL

Node.js

Problem solving

UX/UI optimization

Job description

Base pay range

$145,000.00/yr - $250,000.00/yr

About Pure

Pure is building the future of rare coin and precious metal trading. We believe collectors and investors deserve financial infrastructure that matches the standards of modern markets. That is why we are creating a new kind of order book marketplace that brings transparency, efficiency, and trust to an industry still rooted in legacy systems. Started in 2023, Pure is one of the fastest growing marketplaces for tangible assets. We currently process over $45 million in transactions each month and are expanding rapidly. Our mission is to modernize an old industry by combining the reliability of traditional trading systems with the innovation of cutting‑edge technology.

What You Will Be Doing

• Lead and own critical features and subsystems end-to-end – from design to deployment, making key technical decisions, setting priorities, and delivering fast without sacrificing quality.
• Build, maintain, and scale our marketplace backend, including order matching / order‑book logic, concurrency, correctness, speed, transaction flows, payments, reconciliation, and ensuring data integrity, auditability, and resilience.
• Build and refine our frontend/UI/UX using TypeScript + Next.js, translating designer UX flows into high‑quality components, optimizing performance (SSR vs client‑side, code splitting, lazy loading, etc.).
• Work deeply with PostgreSQL: data modeling, query optimization, indexing, schema design, and ensuring performance as data and load grow.
• Develop and improve internal tools (“Nimbus”) for accounting, logistics, operations dashboards, fraud detection, monitoring, etc.
• Lead small teams or mentor other developers by providing code reviews, unblocking teammates, and setting best practices.
• Drive process improvements, technical architecture, testing strategy, and observability; be hands‑on in incidents or urgent problems.

Who You Are

• Have 3+ years of full‑stack engineering experience (or equivalent), especially in startup or fast‑paced environments.
• Are comfortable leading yourself and others – owning features/systems, guiding teammates, and making decisions.
• Are hands‑on: you write and ship code, prototype, fix bugs, and also think about architecture and scalability.
• Strong front‑end experience with TypeScript + Next.js, good eye for UX/UI, performance, and accessibility.
• Strong backend experience with Node.js (or similar) and PostgreSQL, comfortable designing schemas, writing efficient queries, and handling transactions and consistency.
• Excellent problem solver: you understand trade‑offs between speed, maintainability, architecture, and are pragmatic.
• Good communicator: able to translate business, operations, and design needs into technical work and explain trade‑offs.
• Self‑driven, independent, and willing to ask for feedback when needed.

Bonus

• Experience building marketplaces, matching engines, or financial/trading systems.
• Experience with design systems, component libraries, or UI frameworks.
• Experience with scaling backend services, optimization, monitoring, and observability.

What we offer

Flexible work arrangements: Remote, hybrid, or in‑office in L.A.

Health coverage & insurance: Medical, dental.

Retirement: 401(k) with employer match.

Extras & perks: Daily lunches, wellness stipend.

We move fast. We prioritize shipping with quality, reliability, and correctness.

Ownership matters. You will have autonomy and be expected to lead and follow through. If you are excited and can do core things well, even if you do not match every box, apply.

Compensation Range: $145K – $250K

Seniority level: Mid‑Senior level

Employment type: Full‑time

Job function: Engineering and Information Technology

Industries: Internet Marketplace Platforms