Jobs in the United States

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Network Engineer
NBCUniversal
New York, NY
- $75,000 to $95,000 USD / year
Hybrid: This position currently has a hybrid schedule, which requires contributing from the office a minimum of four days per week
Added just now
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 1 min ago
Tech Lead, Staff Software Engineering, YouTube Premium Acquisition
Google
San Bruno, CA
…mobile; the list goes on and is growing every day. As a software engineer, you will work on a specific project critical to Google’s needs with opportunities to switch teams and projects as…
Added 1 min ago
SUPERVISOR
Space and Naval Warfare Systems Command
Point Loma Complex, CA
Added 1 min ago
SUPERVISOR
Space and Naval Warfare Systems Command
Point Loma Complex, CA
Added 1 min ago
Mechanical Engineer
Crane Aerospace & Electronics
Auburn, CA
Crane Aerospace and Electronics has an exciting opportunity for a Mechanical Engineer at our Auburn, CA location.
Added 1 min ago
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Mechanical Engineer I
EMCOR Group
West Sacramento, CA
- $31.25 to $38.46 USD / hour
Participate in the company’s project improvement process by refining standard design practices, calculating spreadsheet templates, updating and establishing standard procedures and…
Added 1 min ago
Staff Mechanical Buildings Engineer - HVAC / Plumbing (KC, TX, TN, FL, CA, WI) Job Details | Black & Veatch Family of Companies
Black & Veatch
Rancho Cordova, CA
The Mechanical Buildings Engineer – HVAC/Plumbing – Water and Industrial Water will support HVAC and plumbing engineering for water treatment and wastewater treatment facilities across the…
Added 1 min ago
Quality Technician Calibration
Saint-Gobain
GARDEN GROVE, CA
…impossible. Within Omniseals Solution, our teams design and engineer critical, high-performance materials and proven solutions – most in challenging conditions and core systems that play an…
Added 1 min ago
Supervisor, Energy Engineering
Walker-Miller Energy
Ann Arbor, MI · Detroit, MI
Track engineering metrics, project status, productivity, workload balance, quality, and timelines; use data to prioritize work, make timely decisions, and ensure individual and team goals…
Added 1 min ago
Supervisor, Energy Engineering
Walker-Miller Energy
Lansing, MI · Detroit, MI
Track engineering metrics, project status, productivity, workload balance, quality, and timelines; use data to prioritize work, make timely decisions, and ensure individual and team goals…
Added 1 min ago
Supervisor, Energy Engineering
Walker-Miller Energy
Grand Rapids, MI · Detroit, MI
Track engineering metrics, project status, productivity, workload balance, quality, and timelines; use data to prioritize work, make timely decisions, and ensure individual and team goals…
Added 1 min ago
Product Engineering Specialist - NEA and Connectors
Eaton Corporation
Camarillo, CA
…architecture, mechanism design, design margins, material and process selection, mechanical interfaces, performance, reliability, manufacturability, and…
Added 1 min ago
Product Engineer- Requirements & Verification
Alten USA
Carson, CA
As part of the global ALTEN Group - 57,000+ engineers in 30 countries - we deliver across the entire product development cycle, from consulting to full project outsourcing.
Added 1 min ago
Industrial Engineer - Continuous Improvement
Siemens
Pomona, CA
We are looking for an Industrial Engineer in our Pomona, CA facility. The position hours will be M-F, 8am - 5pm
Added 1 min ago
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Engineering Manager, OSP Construction
TAK Broadband
Corona, CA
- $110,000 to $120,000 USD / year
…ecosystem of partners allows it to successfully complete every project starting from the first point of conception. This includes engineering teams, distributors, and more than 100…
Added 1 min ago
Senior/Principal Facilities Engineering Project Manager, Onsite
Sandia National Laboratories
Livermore, CA
Certification as a Professional Engineer (PE), Leader in Energy and Environmental Design (LEED), Certified Energy Manager (CEM), and / or Project Management Professional (PMP)
Added 1 min ago
Senior Equipment Engineer, Equipment Engineering
Amazon
Pasadena, CA
Amazon CQC is looking for a highly motivated Semiconductor Senior Equipment Engineer to develop, sustain, and optimize advanced semiconductor R&D equipment and processes with our Equipment…
Added 1 min ago
Equipment Engineer, Equipment Engineering , Equipment Engineering
Amazon
Pasadena, CA
Candidates must have a demonstrated background in fundamental engineering principles and must have excellent problem solving and communication skills
Added 1 min ago
ERS-NETA Electrical Testing Technician - Atlanta, GA
Vertiv
Atlanta, GA
Write complete, detailed reports promptly at end of project using a computer, and accurately process job billing.
Added 1 min ago
RTP Manufacturing Process Engineer (SM1)
Texas Instruments
Sherman, TX
Texas Instruments is looking for an energetic engineer with a passion for process. This position provides the opportunity to drive continual improvement at all levels. Our team is primarily…
Added 2 mins ago
Factory Automation Staff Engineer
ThermoFisher Scientific
Carlsbad, CA
Partner with site Operations and process owners to select lighthouse projects, define requirements, acceptance criteria, quantify expected benefits, project cost, deployment time, and…
Added 2 mins ago
Engineer IV
General Atomics
Poway, CA
Must possess the ability to actively manage the performance of direct reports
Added 2 mins ago
Integration and Test Engineer IV
Kratos Defense & Security Solutions, Inc.
Roseville, CA
Team leadership at more senior levels with development into Project Engineer and Chief Engineer roles with increasing responsibility.
Added 2 mins ago
Sr. Construction Manager, North America Construction Manager SSD
Amazon
Santa Monica, CA
You will own project budgets, lead design management, select and manage external partners, and drive project procurement - while serving as the senior integrator between construction and…

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