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Senior Full Stack Software Engineer Jobs in Simi Valley, CA

Pure

Full Stack Software Engineer

Los Angeles, CA · On-site

$145K - $250K/yr

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 ...

Fuser

Sr. Full Stack Engineer

Los Angeles, CA · On-site

$80K - $180K/yr

Why You're Here As a Sr. Full Stack Engineer, you'll operate with autonomy in a small, fast-moving ... Familiarity with AI or creative software * Open-source contributions or creative coding background ...

Inversion

Senior Full Stack Engineer

Los Angeles, CA

$139K - $201K/yr

As a Senior Full Stack Engineer at Inversion, you will define and build the internal software tools that help our engineering teams innovate, make better decisions, and operate more effectively. You ...

Pure

Full Stack Software Engineer

Los Angeles, CA · On-site

$145K - $250K/yr

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 ...

Perr&Knight

Senior Full Stack Developer

Santa Monica, CA

$130K - $150K/yr

Employee Recognition Program Perr&Knight is looking for a Senior Full-Stack Developer to fulfill ... Engaging in the full software development lifecycle: planning, requirements, design, development ...

Divergent

Full Stack Software Engineer

Los Angeles, CA · On-site

$122K - $224K/yr

Purpose We're seeking a Full‑Stack Software Engineer with solid experience in application ... E05 / Sr. Engineer: $141,380 - $194,390 Pay Range $122,430--$224,500 USD What We Offer: * Holistic ...

Fuser

Sr. Full Stack Engineer

Los Angeles, CA · On-site +1

$80K - $180K/yr

Why You're Here As a Sr. Full Stack Engineer, you'll operate with autonomy in a small, fast-moving ... Familiarity with AI or creative software * Open-source contributions or creative coding background ...

Perr&Knight

Senior Full Stack Developer

Santa Monica, CA

$130K - $150K/yr

Employee Recognition Program Perr&Knight is looking for a Senior Full-Stack Developer to fulfill ... Engaging in the full software development lifecycle: planning, requirements, design, development ...

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All JobsFull Stack Software Engineer JobsSenior Full Stack Software Engineer JobsSenior Full Stack Software Engineer Jobs in Simi Valley, CA

Senior Full Stack Software Engineer information

See Simi Valley, CA salary details

$45.9K

$139.1K

$196.7K

How much do senior full stack software engineer jobs pay per year?

As of Sep 5, 2026, the average yearly pay for senior full stack software engineer in Simi Valley, CA is $139,123.00, according to ZipRecruiter salary data. Most workers in this role earn between $114,600.00 and $163,100.00 per year, depending on experience, location, and employer.

What is a senior full stack software engineer?

A Senior Full Stack Software Engineer is an experienced developer responsible for designing, building, and maintaining both front-end and back-end systems in web or software applications. They work with a variety of technologies, frameworks, and databases to ensure seamless functionality across the entire software stack. In addition to coding, they often provide technical leadership, mentor junior developers, and contribute to architectural decisions. Their role requires strong problem-solving skills, an understanding of best practices, and the ability to collaborate with cross-functional teams to deliver high-quality software solutions.

What does a senior full stack software engineer do?

A typical day for a Senior Full Stack Software Engineer involves designing and implementing new features, reviewing and improving code, and collaborating with product managers, designers, and other developers to deliver project goals. You might split your time between writing code for both front-end and back-end systems, participating in daily stand-up meetings, and providing technical guidance to junior team members. The role often requires balancing hands-on development with architectural planning and problem-solving for complex technical challenges. You’ll also frequently interact with stakeholders to gather requirements and provide updates, ensuring alignment throughout the software development lifecycle.

What are the key skills and qualifications needed to thrive as a senior full stack software engineer?

To thrive as a Senior Full Stack Software Engineer, you need deep expertise in both front-end and back-end development, strong problem-solving abilities, and a solid foundation in computer science principles, typically demonstrated by a bachelor’s or master’s degree in a related field. Familiarity with frameworks and languages like React, Angular, Node.js, Python, and proficiency in using cloud platforms, version control systems like Git, and continuous integration tools is crucial, and relevant certifications are an advantage. Exceptional communication, leadership, and teamwork skills help you effectively coordinate with cross-functional teams and mentor junior engineers. These skills ensure you can deliver robust, scalable solutions while driving project success and fostering a collaborative development environment.

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Senior Full Stack Software Engineer jobs near you
Infographic showing various Senior Full Stack Software Engineer job openings in Simi Valley, CA as of August 2026, with employment types broken down into 1% As Needed, 83% Full Time, 12% Part Time, and 4% Contract. Highlights an 86% Physical, 5% Hybrid, and 9% Remote job distribution, with an average salary of $139,123 per year, or $66.9 per hour.

Full Stack Software Engineer

Pure

Los Angeles, CA • On-site

$145K - $250K/yr

Full-time

Medical, Dental, Retirement

Re-posted 18 days ago

Job description

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 through to deployment. You will make key technical decisions, set priorities, and deliver fast without sacrificing quality.
  • Build, maintain, and scale our marketplace backend including order matching / order-book logic with concurrency, correctness, and speed in mind; transaction flows, payments, reconciliation; ensuring data integrity, auditability, resilience.
  • Build and refine our frontend / UI/UX using TypeScript + Next.js: translate designer UX flows into high quality components; optimize performance (SSR vs client side, code splitting, lazy loading, etc.).
  • Work deeply with PostgreSQL: data modeling, query optimization, indexing, schema design, 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: provide code reviews, help unblock teammates, set best practices.
  • Drive process improvements, technical architecture, testing strategy, 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, 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, accessibility.
  • Strong backend experience: Node.js (or similar), working with PostgreSQL, comfortable with designing schema, writing efficient queries, 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 / design needs into technical work, and explain trade-offs.
  • Self-driven, independent: you do not need constant supervision; you push things forward, and also know when to ask for feedback.

Bonus:
  • Experience building marketplaces, matching engines, or financial or trading systems.
  • Experience working with design systems, component libraries, or UI frameworks.
  • Experience with scaling backend services, optimization, monitoring, 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.

Apply