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Applied Ai Engineer, Codex

openai

Híbrido São Paulo
AI

Job Score

90 pts
Hybrid model (+80) AI (+10)

About the Team

The Applied AI Engineering (Codex) team helps customers adopt OpenAI's coding tools throughout their software development lifecycle. We act as trusted technical partners, guiding engineering teams as they integrate Codex into their projects and workflows. Our customers span digital-native companies to global enterprises, and we work side-by-side to accelerate how they plan, build, and deliver software.

About the Role

We are seeking a technically deep, creativity-driven Applied AI Engineer who is already a power user of AI coding tools and passionate about pushing the boundaries of developer productivity. You will partner directly with engineering leaders and hands-on builders to design, validate, and scale advanced AI workflows, often using Codex to prototype and build the very demos, integrations, and automations customers ultimately adopt.

This is a highly cross-functional role that blends technical architecture, product strategy, and customer-facing leadership. You’ll work closely with Sales, Solutions Engineering, Product, Applied Engineering, and the broader Codex organization to advocate for customer needs, shape product direction, and accelerate the successful deployment of intelligent coding systems across some of the world’s most influential companies.

This role will be based in our São Paulo, Brazil office three days per week. We require candidates to be fluent in Portuguese, Spanish, and English.

In this role, you will:

  • Serve as the primary technical subject matter expert on OpenAI Codex for a portfolio of customers, embedding deeply with them to enable their engineering teams and build coding workflows.

  • Partner directly with customers to design and implement AI-enhanced development workflows, from rapid prototyping through scalable production rollout.

  • Build high-quality demos, reference implementations, and workflow automations, using Codex itself as part of your development process.

  • Lead large-format workshops, technical deep dives, and hands-on enablement sessions that help engineering organizations adopt AI coding tools effectively and safely.

  • Contribute technical content including examples, guides, patterns, and best practices to the OpenAI Cookbook to help the broader developer community accelerate their work with Codex.

  • Gather high-fidelity product insights from real customer deployments and translate them into clear product proposals and model feedback for internal teams.

  • Influence customer strategy and decision-making by framing how AI coding tools fit into their SDLC, technical roadmap, and organizational workflows.

  • Serve as a trusted advisor on solution architecture, operational readiness, model configuration, security considerations, and best-practice adoption.

You might thrive in this role if you:

  • Have 5+ years of technical consulting, post-sales engineering, solutions architecture, or similar experience working directly with customers.

  • Are an active power user of AI coding tools and have deeply customized your own developer workflow; you have a point of view on what makes engineers more productive.

  • Enjoy building scrappy, high-signal demos, integrations, and prototypes that clearly articulate what Codex can enable, often using Codex to accelerate your own development process.

  • Have experience delivering large, high-impact workshops or technical training to engineering teams and know how to craft sessions that are engaging, hands-on, and outcomes-driven.

  • Have contributed technical guides, patterns, or examples publicly and care about clarity, pedagogy, and community impact.

  • Ability to communicate complex technical concepts in clear, persuasive written and verbal form especially when helping customers make strategic decisions about where and how to apply AI.

  • Are excited by ambiguous, rapidly evolving problem spaces and enjoy iterating toward novel solutions hand-in-hand with customers.

  • Care about customer success, reliability, safety, and operational excellence as much as you care about technical ingenuity.

About OpenAI

OpenAI is an AI research and deployment company dedicated to ensuring that general-purpose artificial intelligence benefits all of humanity. We push the boundaries of the capabilities of AI systems and seek to safely deploy them to the world through our products. AI is an extremely powerful tool that must be created with safety and human needs at its core, and to achieve our mission, we must encompass and value the many different perspectives, voices, and experiences that form the full spectrum of humanity. 

We are an equal opportunity employer, and we do not discriminate on the basis of race, religion, color, national origin, sex, sexual orientation, age, veteran status, disability, genetic information, or other applicable legally protected characteristic.

For additional information, please see OpenAI’s Affirmative Action and Equal Employment Opportunity Policy Statement.

Background checks for applicants will be administered in accordance with applicable law, and qualified applicants with arrest or conviction records will be considered for employment consistent with those laws, including the San Francisco Fair Chance Ordinance, the Los Angeles County Fair Chance Ordinance for Employers, and the California Fair Chance Act, for US-based candidates. For unincorporated Los Angeles County workers: we reasonably believe that criminal history may have a direct, adverse and negative relationship with the following job duties, potentially resulting in the withdrawal of a conditional offer of employment: protect computer hardware entrusted to you from theft, loss or damage; return all computer hardware in your possession (including the data contained therein) upon termination of employment or end of assignment; and maintain the confidentiality of proprietary, confidential, and non-public information. In addition, job duties require access to secure and protected information technology systems and related data security obligations.

To notify OpenAI that you believe this job posting is non-compliant, please submit a report through this form. No response will be provided to inquiries unrelated to job posting compliance.

We are committed to providing reasonable accommodations to applicants with disabilities, and requests can be made via this link.

OpenAI Global Applicant Privacy Policy

At OpenAI, we believe artificial intelligence has the potential to help people solve immense global challenges, and we want the upside of AI to be widely shared. Join us in shaping the future of technology.

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About Artificial Intelligence

Artificial Intelligence is currently the fastest-growing field in the technology market. The revolution in generative models (GPT, Claude, Gemini) has created massive demand for AI-specialized professionals.

Key areas of practice include Machine Learning Engineering, MLOps, Prompt Engineering, AI Research, and Applied AI. Python, TensorFlow, PyTorch, and LLM knowledge are essential skills.

AI salaries are the highest in the technology sector, with many remote work opportunities at international companies.

Discover Other Areas

Understand the scope of work, key skills, and tools used in different career areas.

About Information Security

The Information Security area is one of the most strategic and in-demand fields in the technology market. With the rise of cyberattacks, data breaches, and regulations like LGPD and GDPR, companies of all sizes invest heavily in professionals who can protect their digital assets.

Key specializations include Network Security, Cloud Security (AWS, Azure, GCP), Offensive Security (Penetration Testing, Red Team), Defensive Security (SOC, Blue Team), AppSec, and Security Governance. Tools like SIEM (Splunk, QRadar), firewalls, EDR, and Vulnerability Management platforms are essential.

Certifications like CISSP, CEH, OSCP, CompTIA Security+, and AWS Security Specialty are important differentiators. Information security professionals are among the highest-paid in the sector, with growing demand especially in fintechs, healthtechs, and large enterprises.

About Traffic Manager

The Traffic Manager is the professional responsible for planning, executing, and optimizing paid media campaigns across various digital platforms. With the competitiveness of the digital market, paid traffic professionals are essential for generating qualified leads and maximizing return on advertising investment.

Key skills include campaign management on Google Ads, Meta Ads, LinkedIn Ads, and TikTok Ads, media planning, metrics analysis (ROAS, CPA, CPC, CTR), A/B testing, remarketing, and landing page creation. Tools like Google Analytics, Google Tag Manager, Hotjar, and automation platforms are essential.

Traffic managers in technology companies are highly valued, especially those who master performance marketing, conversion funnel optimization, and scaling strategies. The field offers opportunities from media analyst to head of performance, with a focus on growth, budget efficiency, and return on investment.

About Web Designer

The Web Designer is the professional responsible for creating visual interfaces for websites, web applications, and landing pages, combining aesthetics, usability, and user experience. They transform business needs into functional and responsive layouts that communicate brand identity.

Key skills include UI design, responsive design, prototyping (Figma, Sketch, Adobe XD), wireframing, design systems, accessibility (WCAG), information architecture, and basic HTML/CSS knowledge. Knowledge of UX design, motion design, and front-end is a differentiator.

Web Designers in technology companies are highly valued, especially those who master design systems, design tokens, and can create interfaces that convert and engage. The field offers opportunities from junior web designer to product designer and design lead.

About Audiovisual

The Audiovisual area is responsible for producing, editing, and creating video and audio content for various platforms. With the exponential growth of digital content, audiovisual professionals are fundamental for brands that want to communicate visually and impactfully.

Key skills include video production and editing (Premiere Pro, DaVinci Resolve, Final Cut), motion graphics (After Effects), animation (Blender, Cinema 4D), sound design, podcast production, live streaming (OBS Studio), and photography. Knowledge of visual storytelling, rhythm, and art direction is a differentiator.

Audiovisual professionals in technology companies are highly valued, especially those who master motion graphics, social media videos, and content for digital platforms. The field offers opportunities from videomaker to head of audiovisual, with a focus on creativity, technical quality, and storytelling.

About Automation Analyst

The Automation Analyst is the professional responsible for identifying process optimization opportunities and developing automated workflows (RPA, scripts, or integrations). They map manual and repetitive tasks across various company areas and build automation solutions using low-code/no-code platforms (such as Zapier, Make, Power Automate, n8n) or RPA tools (such as UiPath), driving operational efficiency and error reduction.

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Tech & Remote Glossary

Stop getting lost in interviews and job descriptions

The job market, especially within tech and global companies, has developed its own dialect. Not understanding these acronyms can make you lose valuable opportunities or poorly negotiate your contract. To end this problem, we created the Definitive Glossary for the Remote Professional.

🏢 Work Models & Routine

Async (Asynchronous Work)
A communication model where responses don't need to be immediate. Instead of back-to-back meetings, the team relies on well-structured documents, threads, and messages. It's the gold standard for global companies spanning multiple time zones.
Sync (Synchronous Work)
The opposite of Async. It requires the team to be online and available at the same time for meetings, live chats, and real-time collaboration.
Daily / Stand-up
A quick daily meeting (usually 15 minutes) common in Agile (Scrum) methodologies. The team answers three questions: What did I do yesterday? What will I do today? Are there any blockers?
All-Hands / Town Hall
A company-wide meeting involving all employees. Usually led by the founders (C-Levels) to present results, new goals, and answer team questions.
1:1 (One-on-One)
A recurring individual meeting between a professional and their direct manager. It is used for career alignment, feedback, and problem-solving, not just for project status updates.

💰 Contracts, Benefits & Compensation

PTO (Paid Time Off)
Instead of strict, categorized leave policies, modern US companies usually offer a flexible pool of days (e.g., 20 days of PTO, or even "Unlimited PTO") that you can use for vacations, sick days, or personal matters, while receiving your regular compensation.
Equity / Stock Options
Company ownership. The startup offers you the right to buy shares at a heavily discounted strike price in the future. If the company grows, goes public, or is acquired, these shares can be highly lucrative.
Vesting (Vesting Schedule)
The rule that controls your Equity. It usually lasts 4 years. You don't get all the shares on day one; you "earn" them gradually as you stay with the company. A "1-year Cliff" means you must stay for at least one year to receive your first batch of shares.
RSUs (Restricted Stock Units)
Unlike Stock Options (where you have the right to buy the stock), RSUs are actual shares the company grants you as a bonus or part of your compensation package, following a strict Vesting schedule.
Independent Contractor (1099 / B2B)
The most common international hiring model for global talent working for US companies. You act as a service provider (business-to-business), receiving the gross salary (often six-figure compensation) without standard local payroll tax deductions at the source.

🤖 Recruitment & Hiring Process

ATS (Applicant Tracking System)
The "robot" that reads your resume. Software like Greenhouse, Ashby, and Workday are used to filter candidates by keywords before a human even looks at the document. (Pro tip: this is why your resume must be clean, semantic, and have the right keywords).
JD (Job Description)
The document that lists the responsibilities, technical requirements, and benefits of the open position.
Cultural Fit
The interview stage that evaluates if your core values, communication style, and worldview align with the company's culture. This is the ultimate test of your Soft Skills.
Onboarding
The integration process. It's the period of your first few weeks at the company, where you get your access credentials, learn about the culture, study the internal documentation, and understand how the product works.

🚀 How to use this to your advantage?

The secret isn't just knowing what these acronyms mean, but using them actively. If during an interview for a premium tech role you ask, "How does your PTO policy and Vesting schedule work?", the recruiter will immediately perceive you as a high-level professional, familiar with the global market standards.

The remote job market requires preparation. And having the right vocabulary is the first big step to securing six-figure proposals and standing out among thousands of applicants.

Expert Tip

How to Build an Unbeatable Resume in 2026

At Mondywork, our engine analyzes hundreds of the best remote jobs daily. If there's one thing we've learned from observing the backend of elite recruiting platforms like Greenhouse, Ashby, and Workday, it's this: a good resume isn't the prettiest one; it's the most efficient one.

Many highly qualified professionals miss out on golden opportunities (and six-figure remote roles) simply because their resumes fail to communicate their value within seconds or get trapped in automated corporate filters.

To change that game, we've gathered the best market practices, rooted in data and the brightest minds in global recruiting.

1. The 7.4-Second Rule (The Skimming Test)

The biggest mistake candidates make is assuming the recruiter will read their resume like a book. The reality is much colder.

A famous study conducted by the career and recruiting firm Ladders, using eye-tracking technology, revealed that recruiters spend an average of only 7.4 seconds scanning a resume before deciding whether the candidate moves forward to the next round.

How to optimize your resume for the 7.4 seconds:

  • Clear Visual Hierarchy: Recruiters instinctively look for your Job Title, Current Company, and Dates of Employment. Make this information effortless to find.
  • Bullet Points Only: Never use large blocks of text. The human brain scans lists much more easily.
  • Focus on the Top Third: The top third of your resume (your professional summary and your most recent experience) is your "premium real estate." Your biggest selling points must live there.

2. Google's XYZ Formula for Experience

Most people describe what they did at work (their responsibilities). Recruiters want to know what you achieved (your results).

Laszlo Bock, former Senior Vice President of People Operations at Google, popularized the ultimate methodology for writing experience bullet points: The XYZ Formula.

The structure is simple and powerful:

"Accomplished [X] as measured by [Y], by doing [Z]."

  • Bad (Task-focused): "Wrote code for the payment platform."
  • Good (Result-focused): "Improved the speed of the payment platform."
  • The Google Standard (XYZ Formula): "Increased payment processing speed by 15% (X), reducing page load time by 1.2 seconds (Y), by refactoring the legacy API to Node.js (Z)."

Pro Tip: Whether you're in Digital Marketing, Design, or Tech, use hard metrics. Talk about conversion percentages, cost reductions, active user growth, or hours saved.

3. Beat the Bots: ATS Optimization

Over 99% of Fortune 500 companies and a vast majority of tech startups use ATS (Applicant Tracking Systems). These are software programs that read and filter resumes before a human ever lays eyes on them.

Austin Belcak, founder of Cultivated Culture and employability expert, analyzed over 125,000 resumes and found that complex formatting is the number one enemy of getting hired.

How to pass the ATS filter:

  • Ditch the Canvas (mostly): Resumes with dual columns, skill progress bars (e.g., "70% in JavaScript"), and graphic icons frequently confuse bots, which extract text in a jumbled mess.
  • Use a Linear Format: A simple Word or Google Docs document, saved as a PDF, with single-column formatting (reading top to bottom) is the safest template in the world.
  • Keyword Mirroring: ATS software runs on keywords. Read the job description on Mondywork and ensure the required hard skills (e.g., React, SEO, Figma, Agile) are explicitly written on your resume.

4. The Professional Summary (Your Elevator Pitch)

The traditional "Objective" statement ("Looking for an opportunity to grow within the company") is dead. Today, what works is the Executive Summary.

Use 3 or 4 lines at the very top of your resume to define who you are, your core specialty, and your biggest career win.

Example: "Mid-level Front-end Developer with 4 years of experience in e-commerce. Specialist in React and performance optimization (Web Vitals), with a proven track record of increasing mobile checkout conversion rates by 20%."

🚀 Ready to test your new Resume?

Now that your resume is optimized for the competitive US market and entirely focused on results, it's time to put it in play.

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