Jobs in the United States

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Added just now
Technical Director
Dashiell
Madison, WI
…infrastructure and delivers safe, reliable solutions across the full project lifecycle. Backed by the scale, resources, and safety culture of Quanta Services, Dashiell partners with clients…
Added 1 min ago
VP
Manager, Project Engineer- Facilities Engineer (contract) 00012
Vertex Pharmaceuticals
Boston, MA
- $70 to $75 USD / hour
Vertex Pharmaceuticals is seeking a Project Engineer to support the planning, design, and delivery of non-GMP leasehold improvement and facility operations process improvement projects…
Added 1 min ago
Infrastructure Construction Engineer- New Grad
Fluor Careers
Austin, TX
Perform surveillance/examinations, if required, to ensure that the Quality objectives are being met for the project
Added 1 min ago
Project Manager I - Water/Wastewater
CHA Consulting, Inc.
Columbus, OH · Cleveland, OH · Indianapolis, IN
Minimum of 4 years of discipline-specific engineering experience required; minimum of 2 years of project management experience required · Professional Engineer (PE) license required
Added 2 mins ago
M/E Engineer 3- Commissioning Lead, Advanced Industries
J.E. Dunn Construction Group Inc P
Essex Junction, VT
Valid and unrestricted drivers license required
Added 2 mins ago
BE7 Valves – Propulsion Engineer II
Blue Origin Personnel, LLC
United States
…environment, you will coordinate with team members to address quality issues by supporting troubleshooting and disposition of…
Added 2 mins ago
Sr. Supplier Quality Engineer
Detector Electronics LLC
Minneapolis, MN
Must have excellent written and verbal communication skills and an open attitude for continuous improvement
Added 2 mins ago
Senior Engineer, Substations - Protection & Control
WSB LLC
Remote, United States
…looking for an experienced Senior Substation Protection & Control Engineer with a strong background in utility substation protection, control, automation, and SCADA design. This individual…
Added 2 mins ago
Senior Engineer, Substations - Physical Design
WSB LLC
Remote, United States
…are seeking an experienced Senior Physical Substation Design Engineer with a strong background in high-voltage substation physical design. This individual will execute, lead, and provide…
Added 2 mins ago
Infrastructure Construction Engineer- New Grad
Fluor
Austin
Perform surveillance/examinations, if required, to ensure that the Quality objectives are being met for the project
Added 3 mins ago
Entry Level Geotechnical Engineer
GFT.
East Brunswick, NJ
Must have valid Driver’s License
Added 4 mins ago
Executive Support Engineer
CVS Shared Services Resources LLC
Hartford, CT
…purpose, hold ourselves accountable and prioritize safety and quality in everything we do. Join us and be part of something bigger – helping to simplify health care one person, one family…
Added 4 mins ago
RU
Embedded Software Engineer
Randstad USA
Milwaukee, WI
- $100,000 to $130,000 USD / year
We are seeking a highly motivated Embedded Software Engineer to join our engineering team focused on developing robust, efficient, and scalable software solutions for embedded controls…
Added 4 mins ago
Process Engineer
Amsted Rail Company
Petersburg, VA
As a Process Engineer, you will be responsible for improving manufacturing processes, equipment performance, and product quality within assigned production areas. This role will be assigned…
Added 6 mins ago
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Director of Design-Build
AECOM
Orange, CA
- $225,000 to $250,000 USD / year
…leader will help owners establish delivery strategies, select project partners, and navigate the critical decisions that shape project scope, cost, schedule, and long-term…
Added 6 mins ago
A
Director of Design-Build
AECOM
Portland, OR
- $225,000 to $250,000 USD / year
…leader will help owners establish delivery strategies, select project partners, and navigate the critical decisions that shape project scope, cost, schedule, and long-term…
Added 6 mins ago
A
Director of Design-Build
AECOM
Seattle, WA
- $225,000 to $250,000 USD / year
…leader will help owners establish delivery strategies, select project partners, and navigate the critical decisions that shape project scope, cost, schedule, and long-term…
Added 7 mins ago
A
Systems Engineer
Actalent
Woburn, MA
- $77 to $101 USD / hour
Job Title: Systems Engineer Long Range Radar SystemsJob DescriptionThis on-site Systems Engineer role supports advanced long-range radar and missile-defense sensor systems within a Systems…
Added 7 mins ago
Mechanical Engineer II
Actalent
Huntsville, AL
Mechanical Engineer IIJob DescriptionThe Mechanical Engineer II designs, analyzes, and documents static and dynamic mechanical systems, equipment, and packages, supporting the full…
Added 7 mins ago
T
ISP/OSP Technician
TEKsystems
Zanesville, OH
- $22 to $30 USD / hour
We are hiring Fiber Technicians (Tech I & Tech II) to support a large-scale data center construction project in Ohio. This role offers long-term career potential, with the first phase…
Added 7 mins ago
T
ISP/OSP Technician
TEKsystems
Newark, OH
- $22 to $30 USD / hour
We are hiring Fiber Technicians (Tech I & Tech II) to support a large-scale data center construction project in Ohio. This role offers long-term career potential, with the first phase…
Added 8 mins ago
Corporate Engineer II - Powerhouse
Florida Crystals / ASR Group
Baltimore, MD
The Corporate Engineer II - Powerhouse will provide engineering support across the group to improve equipment reliability, operating efficiency, safety and service quality, with a focus on…
Added 9 mins ago
Manager Software Engineering - AI Platform
C.H. Robinson Shared Services, Inc.
Remote, United States
Minimum 5 years of experience working in a technology role such as: software engineer, business analyst, quality assurance analyst, product manager, or technology project manager
Added 9 mins ago
Spacecraft Hardware Development Specialist, Amazon Leo DevOps
Amazon Kuiper Manufacturing Enterprises LLC
Redmond, WA
…upkeep, and documentation - so expect the day-to-day to shift as project needs…
Added 9 mins ago
TP
Building Engineer | North Central Baltimore
Thomas Park Holdings
Annapolis, MD · Towson, MD
- $28 to $33 USD / hour
…contractors and property managers to deliver reliable, high-quality work through strong communication, accountability, and efficient project…

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