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Firmware Engineer
HP
Vancouver, WA
- $105,050 to $161,800 USD / year
HP is seeking an experienced Embedded Security Engineer to drive the development, integration, and evolution of security technologies for enterprise printing products.
Added 1 min ago
Sr. Marketing Data & GTM Engineer
Konica Minolta Business Solutions, U.S.A., Inc.
Ramsey, NJ
Konica Minolta is seeking a forward-looking Senior Marketing Data & GTM Engineer to transform complex, fragmented data into the audience intelligence and activation capabilities that power…
Added 1 min ago
Remote VP of Engineering for a Healthcare Company
Pearl
Remote, United States
…afford them. It is looking for a Founding Senior Full-Stack Engineer to build the products that increase the supply of donated…
Added 2 mins ago
Engineer II - DevSecOps
Exelixis Inc
Alameda, CA
The Engineer II - DevSecOps is responsible for protecting the organization's AI infrastructure, data, and systems from internal and external cybersecurity threats by implementing, managing,…
Added 4 mins ago
Senior Platform Service Software Engineer
NVIDIA USA
CA
We are now looking for a senior software engineer to join our Hardware Infrastructure team! Our team is responsible for delivering highly available platform services and performant web…
Added 5 mins ago
Senior Engineer - Voice and Call Center
Fusion HCR
Las Vegas, NV
This senior engineering role supports voice services and contact center operations at a large integrated resort. The engineer will serve as a subject matter expert for the omnichannel…
Added 6 mins ago
Senior Forward Deployed Engineer
Enlighten AI Labs
Atlanta, GA
Trace failures across the application, data, and infrastructure. Explain tradeoffs and raise risks early enough for the team to act.
Added 7 mins ago
H
Firmware Engineer
HP
Vancouver, WA
- $105,050 to $161,800 USD / year
HP is seeking an experienced Embedded Security Engineer to drive the development, integration, and evolution of security technologies for enterprise printing products.
Added 7 mins ago
Intermediate Process Automation & Controls Engineer
Worley
Metairie, LA · Metairie
We are seeking an Intermediate Process Automation & Controls Engineer to join our Consulting team in Metairie, Louisiana. This position is ideal for an engineer with 3-8 years of experience…
Added 7 mins ago
Junior Process Engineer
Worley
ON, CA
We are currently recruiting for a Junior Process Engineer. Our team includes world class experts and dynamic go-getters. This is a full-time position based in Sarnia, Ontario.
Added 7 mins ago
Senior Process Engineer
Worley
ON, CA
We are currently recruiting for a Senior Process Engineer. Our team includes world class experts and dynamic go-getters. This is a full-time position based in Toronto, Ontario.
Added 7 mins ago
Department Manager Structural Engineering
Worley
Houston, TX · Houston
Experience in the energy, chemicals, refining, petrochemical, resources, infrastructure, power, or related industries.
Added 7 mins ago
Senior Process Automation & Controls Engineer
Worley
Metairie, LA · Metairie
We are seeking a Senior Process Automation & Controls Engineer to join our Consulting team, the office location is in Metairie, Lousina. This position is ideal for an experienced engineer…
Added 14 mins ago
TT
Research Engineer, Evals
True Talent Solutions Partners
San Francisco, CA
- $250,000 to $290,000 USD / year
…information. You will shape how quality is measured, create the infrastructure to measure it at scale, and connect evaluation results to model and product…
Added 14 mins ago
Staff Technical Program Manager, Firmware Lifecycle and Release Management
Crusoe
Seattle, WA
Crusoe is on a mission to accelerate the abundance of energy and intelligence. As the only vertically integrated AI infrastructure company built from the ground up, we own and operate each…
Added 15 mins ago
Senior Engineer - Voice and Call Center
Fusion HCR
Las Vegas, NV
This senior engineering role supports voice services and contact center operations at a large integrated resort. The engineer will serve as a subject matter expert for the omnichannel…
Added 17 mins ago
Staff Engineer
BlackLine Systems, Inc.
United States
As a Staff Software Engineer, you will play a crucial role in building the next generation of BlackLine and data platform. BlackLine thrives on data and we are investing heavily in being…
Added 19 mins ago
Consulting Architect
Elastic
United States
Acting as a trusted technical advisor, you will work with enterprises to improve application performance, infrastructure visibility, and end-user experience, while also improving their…
Added 20 mins ago
PS
Platform Software Engineer
Pi Security
San Francisco, CA
- $168,000 to $235,000 USD / year
We are seeking an experienced Software Engineer to design, develop, and scale the core platform powering Pi's products. This role involves building shared services, frameworks, and…
Added 20 mins ago
Senior Staff Software Engineer, Agentic Systems - Moveworks
ServiceNow
Mountain View, CA
It all started when engineer Fred Luddy wrote code that automated a tedious task for his coworker, Phyllis. She cried tears of joy. That moment inspired Fred to build a company that could…
Added 20 mins ago
VI
Product Operations Manager
Vesta Innovations Inc.
United States
- $150,000 to $200,000 USD / year
…they spent years together focused on creating modern cloud infrastructure for banks. Now, with Vesta, they are transforming the mortgage industry by creating the most flexible, open and…
Added 21 mins ago
National Manager, Software Engineer
Toyota
Plano, TX
…diverse teams including UX, product management, architecture, and infrastructure to develop high-quality…
Added 23 mins ago
Principal AI Engineer
Capgemini
Atlanta, GA, GA
Drive build-vs-buy decisions across AI infrastructure, open-source technologies, and commercial platforms.
Added 23 mins ago
Hyperscalar Cybersecurity Engineer
Capgemini
Atlanta, GA, GA
Strong expertise in IAM, Kubernetes security, cryptography, key management, and Infrastructure-as-Code.
Added 26 mins ago
BT
Field Application Engineer, AI Cloud
Bitdeer Technologies Group
San Jose, CA
- $140,000 to $180,000 USD / year
We are seeking an experienced Field Application Engineer to lead technical due diligence on data centers for AI and GPU infrastructure deployment. This role is responsible for assessing…

Patronus AI, Inc.

Expert: Interactive Coding, Payments Processing (Contract, Remote)

Remote, United States

Remote

$150 USD / hour

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Job details

Pay: $150 USD / hour
Workplace: Remote
Working hours: 10 hours per week
Posting language: English
Posted: Nov 3, 2026

Original job description

About Patronus AI

Patronus AI is a frontier lab developing simulation research and infrastructure to accelerate progress toward human-aligned AGI. We are on a mission to simulate all of the world’s intelligence.

We are the team behind some of the earliest and most influential research in AI evaluation like FinanceBench, Lynx, SimpleSafetyTests, CopyrightCatcher, Humanity’s Last Exam, and more. We are formerly AI researchers and engineers from companies like Meta AI, Amazon AGI, and Google. Our customers include foundation model labs and Fortune 500 enterprises like Adobe. We are backed by top-tier investors like Lightspeed Venture Partners, Notable Capital, Stanford University, Noam Brown, Gokul Rajaram, and more.

At a glance

Engagement: Independent contractor, fully remote. Live screen-share sessions with our researchers plus short asynchronous write-ups.
Pay: $150 per hour. The trial session is paid.
Commitment: About 10 hours per week, 1 to 3 months to start, with extension for strong performers.
Start: Rolling
Location: Remote, any country, with a few hours of overlap with US or EU working hours.

The role

You'll work live with our research team on coding scenarios in a sandboxed payments codebase: authorization, capture and refund flows, idempotency and retries, webhook handling, reconciliation and settlement, ledger entries, chargebacks and disputes, and 3DS/SCA. You implement or review the change the way you would at work, explain your reasoning as you go, tell us where the scenario doesn't match how money actually moves, and help define what correct looks like.

Each session starts from a scenario we provide. You work through it on a shared screen, land the change or the review, and then write a short note on how you approached it. Your work becomes evaluation and training data for frontier models.

You don't need an AI background. You do need to be the kind of engineer who thinks about the duplicate webhook before the happy path, and who knows which rounding rule the ledger expects.

Areas we're hiring for

Each area is defined by the part of the money-movement path you own, so you should fit exactly one. If you work across two, apply under the one where you spend most of your time.

Payment processing and gateway integration. Engineers who build the checkout and money-movement path: authorization, capture, refund and void flows against a processor or acquirer such as Stripe, Adyen or Braintree, idempotency keys, retries, webhooks and 3DS/SCA. Typical titles: Payments Engineer, Backend Engineer (Payments), Integration Engineer, Checkout Engineer.
Ledger, settlement and reconciliation. Engineers who own the books behind the payments: double-entry ledgers, settlement files, payout schedules, reconciliation against processor and bank reports, currency handling and rounding. Typical titles: Ledger Engineer, Fintech Backend Engineer, Treasury Systems Engineer, Reconciliation Engineer.
Disputes, risk and compliance engineering. Engineers who build chargeback and dispute workflows, fraud and risk rules, card-data handling under PCI DSS, and the audit trails behind them. Typical titles: Risk Engineer, Fraud Platform Engineer, Disputes Engineer, Payments Compliance Engineer.

What you'll do

Implement and review payment flows live with a researcher in a sandboxed codebase: authorization, capture and refund paths, idempotent retries, webhook handlers, ledger entries, reconciliation jobs and dispute handling.
Explain your reasoning as you work, including the edge cases you check first.
Review scenarios we have drafted for realism and difficulty, and flag the failure modes that bite real payments teams: double charges, partial captures, currency rounding, race conditions, and stale or replayed webhooks.
Help write the acceptance criteria for each scenario, including the tempting wrong moves.
Write short notes after each session on how you approached the problem and what you verified.
Work in reviewer feedback within agreed turnaround times, and flag guideline gaps or edge cases you run into.

Who we're looking for

Required

3+ years writing production code for a payment processor, a processor integration, a card issuer or acquirer, a fintech ledger or a bank's payments platform, including work within the last two years. You wrote the code yourself; managing the team is not enough.
Working command of the money-movement lifecycle end to end: authorization, capture, settlement, reconciliation and disputes, and the compliance edges such as PCI DSS and SCA.
Comfortable in at least one of Python, Go, Java or TypeScript, and at reading unfamiliar codebases.
Able to explain your reasoning out loud while you work, in clear professional English.
Reliable availability for scheduled live sessions and the habit of showing the evidence behind every conclusion.

Nice to have

Experience with several processors or rails, such as Stripe, Adyen, card networks, ACH, SEPA or UPI.
Experience writing technical design documents, incident reviews or interview questions for payments systems.
Familiarity with how AI coding agents fail on payments work.

Our standards

All solutions, write-ups and reviews are your own work. LLM-generated code or text is not permitted.
Scenarios and solutions must be original. Nothing may be copied from published or easily searchable sources.
Never include code, configuration or transaction data from a current or former employer or client, or anything covered by an NDA. All companies, systems and scenarios are fictional, and all work is your own.
Quality is judged on correctness, clarity of reasoning and reviewer agreement, not on speed or volume.

How hiring works

Short AI interview and resume review
One paid trial session, scored against a fixed quality checklist
Onboarding and your first project

Patronus AI is an equal opportunity employer. We celebrate diversity in our workplace, and all qualified applicants will receive consideration for employment without regard to age, ancestry, color, family or medical care leave, gender identity or expression, genetic information, marital status, medical condition, national origin, physical or mental disability, political affiliation, protected veteran status, race, religion, sex (including pregnancy), sexual orientation, or other legally protected characteristics.

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More about this job

Skills

Research
Regulatory compliance
Python
Go
Oracle Java
TypeScript
Onboarding

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