Jobs in the United States

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Added just now
Software Engineer (Starship)
SpaceX
Starbase, TX · Hawthorne, CA · Brownsville, TX
…Our team spans planning, procurement, supplier development, quality, material flow, and…
Added just now
Software Engineer (Starship)
SpaceX
Hawthorne, CA · Brownsville, TX
…Our team spans planning, procurement, supplier development, quality, material flow, and…
Added just now
Data Engineer (Starship)
SpaceX
Starbase, TX · Hawthorne, CA · Brownsville, TX
…Our team spans planning, procurement, supplier development, quality, material flow, and…
Added 1 min ago
Data Engineer Lead
FedEx Dataworks
Plano, TX · Memphis, TN · Coraopolis, PA
The Data Engineer Lead plays a pivotal role within Dataworks, focused on creating and driving engineering innovation within Dataworks, helping define and build the Dataworks organization…
Added 1 min ago
Sr. Electrical Controls Engineer
SunSource
Exton, PA
Applied Controls is seeking a Sr. Electrical Design & Controls Engineer to support the design, programming, integration, and commissioning of custom automation, robotics, vision, and…
Added 1 min ago
Test Engineer III - AI/ML Server Platforms (401 Shift)
Jabil Inc.
Florence, KY
Test Engineer III is required to work 12-hour shifts on the following schedule:
Added 1 min ago
Test Engineer II - (3 PM - 11:30 PM Shift)
Jabil Inc.
Memphis, TN · Byhalia, MS
…safety interlocks, and functional test troubleshooting. The Test Engineer II works under limited supervision from Test Engineering leadership. Also responsible for supervising test…
Added 3 mins ago
Substation EPC Engineering Lead
HDR
Portland, OR · Billings, MT · Spokane, WA · Boise, ID · Bozeman, MT · Seattle, WA · Missoula, MT
Own technical execution, engineering quality, and design integration across the substation program, from conceptual design and design basis through issued-for-construction (IFC) design,…
Added 3 mins ago
HI
Embedded Firmware Automation Test Engineer
Hunter Industries Brand
San Marcos, CA
- $90,000 to $105,000 USD / year
Hunter Industries is seeking an Embedded Firmware Automation Test Engineer who ensures the reliability, functionality and performance of smart irrigation controller systems. As part of the…
Added 3 mins ago
Maintenance Engineer
O&K American Corp.
Seymour, IN
The Maintenance Engineer is responsible for improving manufacturing processes while ensuring the reliability, efficiency, and performance of production equipment and facility systems. This…
Added 4 mins ago
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.NET Technical Lead
Jobot
Remote, United States
- $170,000 to $210,000 USD / year
This is a technical lead role on a software team building a fundraising and donor management platform for nonprofits. You will set the technical direction for the team's domain, hold a high…
Added 5 mins ago
Mechanical Designer Engineer
Lincoln Electric
Chattanooga, TN
Lincoln Electric Automation is seeking a Mechanical Design Engineer to design custom automation equipment, tooling, and robotic welding systems. This role supports projects from concept…
Added 5 mins ago
Flight Software Requirements and Analysis Engineer
Code Plus Inc
Huntsville, AL
(Must possess STAR ID.)
Added 6 mins ago
Packaging Improvement Engineer
Daisy Brand
Boone, IA
The Packaging Improvement Engineer partners with cross-functional teams, equipment manufacturers, and packaging suppliers to improve packaging-system performance across the company. The…
Added 6 mins ago
Tech Lead, Staff Software Engineering, YouTube Premium Acquisition
Google
San Bruno, CA
YouTube Premium is the largest subscription product in YouTube. As a Staff Software Engineer and Tech Lead for YouTube Premium Acquisition, you will drive the multi-quarter technical…
Added 6 mins ago
Mechanical Engineer
Crane Aerospace & Electronics
Auburn, CA
The Mechanical Engineer works with minimal supervision and uses originality, ingenuity and established procedures to perform engineering duties in researching, planning, designing, and…
Added 6 mins ago
EG
Mechanical Engineer I
EMCOR Group
West Sacramento, CA
- $31.25 to $38.46 USD / hour
We are a full-service HVAC, building automation, chiller, and retrofit contractor with a reputation for combining high-quality consulting services with customized energy solutions. Our…
Added 6 mins ago
Supervisor, Energy Engineering
Walker-Miller Energy
Ann Arbor, MI · Detroit, MI
Foster innovation and continuous improvement by evaluating and implementing new technologies, engineering tools, software platforms, automation solutions, and best practices that improve…
Added 6 mins ago
Supervisor, Energy Engineering
Walker-Miller Energy
Lansing, MI · Detroit, MI
Foster innovation and continuous improvement by evaluating and implementing new technologies, engineering tools, software platforms, automation solutions, and best practices that improve…
Added 6 mins ago
Supervisor, Energy Engineering
Walker-Miller Energy
Grand Rapids, MI · Detroit, MI
Foster innovation and continuous improvement by evaluating and implementing new technologies, engineering tools, software platforms, automation solutions, and best practices that improve…
Added 6 mins ago
EC
Sr. Quality Engineer
Eaton Corporation
Camarillo, CA
- $99,000 to $145,000 USD / year
Eaton’s IS AER ITD Aerospace Interconnect division is currently seeking a Sr. Quality Engineer.
Added 6 mins ago
Product Engineering Specialist - NEA and Connectors
Eaton Corporation
Camarillo, CA
…management, commercial teams, customers, suppliers, manufacturing, quality, program management, and other cross-functional teams regarding complex technical issues, product capability,…
Added 6 mins ago
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Software Engineer
ManpowerGroup
Foster City, CA
- $25.38 USD / hour
Our client is seeking a Software Engineer to join their team. As a Software Engineer, you will be part of the Software department supporting Software Platforms & Product. The ideal…
Added 6 mins ago
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Software Engineer
ManpowerGroup
Foster City, CA
- $25.38 USD / hour
Our client, an innovative software organization focused on autonomous mobility, is seeking a Software Engineer to join their team. As a Software Engineer, you will be part of the Software…
Added 7 mins ago
TW
Forward Deployed Engineer
The Walt Disney Company
Glendale, CA
- $119,200 to $159,800 USD / year
Strong software engineering foundation with demonstrated ability to independently write, test, debug, and maintain production-quality code.

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