Jobs in the United States

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Closures Systems Engineer
Ford Motor Company
Long Beach, CA
Scrutinize and optimize project costs, prioritizing design effectiveness and safety, in conjunction with supply chain colleagues
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Electrophysics Engineer/Scientist – (Experienced, Lead, or Senior)
The Boeing Company
El Segundo, CA
Boeing Defense, Space, & Security (BDS) is seeking Electrophysics Engineer/Scientist – (Experienced, Lead, or Senior) to join the Space Electronics One Boeing & New Business team located in…
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Hardware Engineering Manager
The Boeing Company
El Segundo, CA
Promote robust design practices, including design for manufacturability, reliability, maintainability, safety, and testability
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Engineer I
Rain for Rent
Bakersfield, CA
…redefining what customers expect from a liquid handling provider. We design innovative equipment and harness cutting-edge technology to meet the demands of the toughest environments. From…
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Engineer I
Rain for Rent
Bakersfield, CA
…redefining what customers expect from a liquid handling provider. We design innovative equipment and harness cutting-edge technology to meet the demands of the toughest environments. From…
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Staff Software Engineer, ML Infrastructure, Search Agentic Growth Engine
Google
Mountain View, CA
…information retrieval, distributed computing, large-scale system design, networking and data storage, security, artificial intelligence, natural language processing, UI design and mobile;…
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Software Engineer III, AI/ML GenAI, YouTube
Google
Mountain View, CA
…information retrieval, distributed computing, large-scale system design, networking and data storage, security, artificial intelligence, natural language processing, UI design and mobile;…
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Staff Software Engineer, DeepMind
Google
Mountain View, CA
3 years of experience leading software design and system architecture for high-throughput distributed systems, foundation model runtimes, or client applications.
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Principal Supplier Quality Engineer, Contract Manufacturing (CMO)
Edwards Lifesciences
Irvine, CA
We are seeking a strategic and highly experienced Principal Supplier Quality Engineer to provide quality oversight for Contract Manufacturing Organizations (CMOs) producing finished medical…
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Entry Level Mechanical Engineer - FED/IRV
Jacobs
Irvine, CA
…a real impact? We're looking for an Entry Level Mechanical Engineer to join our Federal Buildings team in Irvine, CA where you'll help design innovative facilities that support U.S.…
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Entry Level Commissioning Specialist
Jacobs
Irvine, CA
…in a safe and functional environment that meets established design requirements and stakeholder expectations. Projects that you will engage with will include commissioning for new…
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Software Engineering Manager II, Infrastructure, Google Cloud
Google
Sunnyvale, CA
Like Google's own ambitions, the work of a Software Engineer goes beyond just Search. Software Engineering Managers have not only the technical expertise to take on and provide technical…
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Senior Staff Software Engineer, NetSoft UTL, Google Global Infrastructure
Google
Sunnyvale, CA
…information retrieval, distributed computing, large-scale system design, networking and data storage, security, artificial intelligence, natural language processing, UI design and mobile;…
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Android Application Framework Developer - Device Engineering
Fiserv
Sunnyvale, CA
If you are a recent graduate or early-career engineer eager to dive deep into the Android OS, manage USB/network hardware protocols, and see your code drive physical smart terminal hardware…
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Senior Software Engineer, Security/Privacy, Google Cloud Security and Privacy
Google
Sunnyvale, CA
…information retrieval, distributed computing, large-scale system design, networking and data storage, security, artificial intelligence, natural language processing, UI design and mobile;…
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Engineer Material Process
Northrop Grumman
Sunnyvale, CA
The individual in this position will be working with senior engineers to drive innovation and must have an understanding of the technologies involved
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AE
Campus Undergraduate Summer Internship Program - 2027 Software Engineer, Enterprise Technology Services- Sunnyvale, CA
American Express
Sunnyvale, CA
- $24.05 to $63 USD / hour
…enterprise data governance and platforms, digital product and design, and enterprise AI platforms on behalf of the…
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Additive Technologies Principal Investigator 4
Northrop Grumman
Sunnyvale, CA
…with providing the skills, innovative technologies to develop, design, produce and sustain optimized product lines across the sector while providing a decisive advantage to the warfighter.…
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Mechanical Engineer level 3/4
Northrop Grumman
Sunnyvale, CA
Northrop Grumman is seeking Mechanical Design Engineer Level 3/4 to join our team based out of Sunnyvale, Ca. The Marine Systems organization, part of Northrop Grumman Mission Systems, is…
Added 1 min ago
Data Solutions Architect - Data Platform, Data Products & AI-Ready Data
Applied Materials
Santa Clara, CA
As a Software Engineer at Applied Materials, you’ll dive deep into ground-breaking technologies - like machine learning and AI - to craft novel software solutions that solve our customers’…
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08 - Lead Engineer, Hardware Design
Celestica
San Jose, CA
The Lead Engineer, Hardware Design works with cross functional teams with other designers, customers, manufacturing engineering and project leadership to ensure robust and high quality…
Added 1 min ago
Business Security Consultant (CNAPP)
EY
Sacramento, CA
Must possess excellent communication, presentation, and collaboration skills
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Software Engineer
Highmark Health
Sacramento, CA
This job is an integral member of an agile software engineer team responsible for building complex scalable software applications across all digital channels to serve our customers. The…
Added 1 min ago
C
Senior Azure Virtual Desktop Engineer
Cognizant
Sacramento, CA
- $79,000 to $90,000 USD / year
As a Senior Azure Virtual Desktop Engineer, you will make an impact by designing, deploying, automating, and optimizing Azure Virtual Desktop environments that support both pooled…
Added 1 min ago
Client Technology - Senior Software Engineering with AI Capabilities
EY
Sacramento, CA
Leads the delivery of solution or infrastructure development services for a large or more complex project, using strong technical capabilities and outstanding hands-on experience!

EarnIn

Senior AI Builder

Mountain View, CA, United States

Apply on job-boards.greenhouse.io About employer

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Job details

Experience: 4+ years of full-time software engineering experience, with at least 2 years building tooling, platforms, or internal developer products
Posting language: English
Posted: Jul 9, 2026

Original job description

ABOUT EARNIN

As one of the first pioneers of earned wage access, our passion at EarnIn is building products that deliver real-time financial flexibility for people living paycheck to paycheck. Our community members access their earnings as they earn them, with options to spend, save, and grow their money without mandatory fees, interest rates, or credit checks. We’re fortunate to have an incredibly experienced leadership team, combined with world-class funding partners like A16Z, Matrix Partners, DST, Ribbit Capital, and a very healthy core business with a tremendous runway. We’re growing fast and excited to bring on world-class talent to help shape the next chapter of our growth journey.

EarnIn is becoming an AI-native company, embedding AI agents into how we build, analyze, and operate across every function. Teams use AI Agents to move from ideas to execution faster. By letting agents handle repetitive tasks, our people can focus on judgment, creativity, and hard problems. We pair this experimentation with the strict review and security guardrails our regulated financial environment requires, always keeping a focus on privacy and the people who rely on our products.

As a company, we are becoming AI-native, and we encourage you to use AI tools throughout much of your interview process. If you use AI during the live interview, just say so; a quick, natural mention of how it helped and why you are using it is all we need. What we're evaluating is your judgment, reasoning, and ability to own and defend your work, not whether AI was involved. Some rounds, particularly those focused on your career history and past experiences, will not allow the use of AI, and we'll let you know of those in advance. When in doubt, ask your recruiter or interviewer directly.

POSITION SUMMARY

EarnIn is making AI-native engineering a core capability - not an initiative, but how we design, build, and ship. We're not hiring a software engineer who dabbles in AI. We're hiring an AI builder who also writes great software - someone who looks at every step of how we design, build, test, and ship, and asks: why isn't an agent doing this? This is not a side project. The agents and harnesses you build here will run in production, making real decisions for real people - people who depend on EarnIn to access their pay when it matters most. If that bar excites you rather than intimidates you, keep reading.

You'll work at the intersection of platform engineering, developer experience, and applied AI - partnering with architects, domain leads,, and product engineers to build the tools, patterns, and guardrails that make AI adoption fast, safe, and durable. The Mountain View base salary range for this full-time position is $228,000 - $279,000, plus equity and benefits. Our salary ranges are determined by role, level, and location. This is a hybrid position in Mountain View that requires in-office work 2 days a week.

WHAT YOU'LL DO

Agents that take real actions. You'll design how agents think - prompts, reasoning chains, tool calls, and the full architecture beneath them. From MCP servers and agent scaffolding to context harnesses and a Skills Marketplace, you're building the layer every squad at EarnIn builds on. Not a proof of concept. Production infrastructure.

A PDLC that doesn't look like 2022. The product development lifecycle is overdue for a rethink. You'll challenge each stage - from scoping and design through to review, testing, deployment, and monitoring - and replace manual friction with agentic workflows wherever it makes sense. Evaluation pipelines, automated PR hygiene, deployment gating, generation-to-merge metrics: you'll build the scaffolding that makes governed AI fast, not slow.

Evals that actually mean something. You'll own the evaluation infrastructure - building the pipelines, benchmarks, and quality gates that tell us whether our AI is working, degrading, or ready to ship. That means designing eval harnesses for AI-assisted workflows, setting generation-to-merge and review latency baselines, and making model quality visible and trustworthy across teams. If you've built evals that caught real problems before they hit production, you'll fit right in.

Pilots that graduate to production. EarnIn's engineering leads are running experiments. You'll be the person who takes what's working and turns it into something the next team can fork and ship in a week. Less "interesting prototype," more "thing we rely on." You’ll build reusable libraries, templates, and reference implementations that give squads a running start on AI integration, so no one has to solve the same problem twice

WHAT SUCCESS LOOKS LIKE

Teams across engineering can ship AI-assisted features faster, with fewer rework loops
The harnesses you build are actively used and well-documented
AI pilot quality and safety metrics are visible, trustworthy, and improving

WHAT WE'RE LOOKING FOR

4+ years of full-time software engineering experience, with at least 2 years building tooling, platforms, or internal developer products
Bachelor’s, Master’s, or PhD in Computer Science, Computer Engineering, or a related technical discipline, or equivalent industry experience. We care about what you’ve built, not where you studied.
Hands-on experience with LLM integration patterns - prompt engineering, RAG pipelines, tool/function calling, and agent architectures
Proficiency and comfort working across the stack when needed
Experience with MCP, LangChain, or comparable orchestration frameworks
Experience with open source LLM models
Strong opinions about developer experience and a track record of building things other engineers actually use

YOU'LL STAND OUT IF YOU HAVE

Hands-on experience with reinforcement learning - especially RLHF, RLAIF, or reward modeling in applied product contexts
Experience in fintech or regulated/security-sensitive environments
Hands-on work with AI governance - bias evaluation, audit logging, model cards
Exposure to multi-step reasoning pipelines or human-in-the-loop system design

At EarnIn, we believe that the best way to build a financial system that works for everyday people is by hiring a team that represents our diverse community. Our team is diverse not only in background and experience but also in perspective. We celebrate our diversity and strive to create a culture of belonging. EarnIn does not unlawfully discriminate based on race, color, religion, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), gender identity, gender expression, national origin, ancestry, citizenship, age, physical or mental disability, legally protected medical condition, family care status, military or veteran status, marital status, registered domestic partner status, sexual orientation, genetic information, or any other basis protected by local, state, or federal laws. EarnIn is an E-Verify participant.

EarnIn does not accept unsolicited resumes from individual recruiters or third-party recruiting agencies in response to job postings. No fee will be paid to third parties who submit unsolicited candidates directly to our hiring managers or HR team.

Work requirements

Jobs in the United States