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Applied Ai Engineer, Codex

openai

Híbrido Paris, France
AI

Job Score

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

About the Team

OpenAI’s Applied AI Engineering team helps organizations turn frontier AI capabilities into safe, reliable, and high-impact production systems. For software engineering organizations, this means helping customers adopt Codex and other OpenAI capabilities across the software development lifecycle—transforming how teams plan, build, test, review, and deliver software.

We work directly with engineering leaders and hands-on developers to identify high-value opportunities, design and implement AI-powered development workflows, and scale what works across engineering organizations. We turn lessons from these deployments into better products, reusable architectures, and technical patterns that help developers everywhere get more value from Codex.

About the Role

As an Applied AI Engineer focused on Codex, you will partner directly with leading engineering organizations to design, build, and deploy AI systems that transform how software is developed. You will combine deep technical judgment, hands-on engineering, and customer leadership to take ambitious ideas from workflow and use-case selection through prototyping, evaluation, production rollout, and scaled adoption.

You will work alongside engineering teams to build advanced AI coding workflows, integrations, automations, and evaluation systems—often using Codex itself as part of your development process. You will help customers make technical decisions involving model behavior, agentic workflows, developer environments, security, reliability, evaluation, and operational readiness, while ensuring deployments translate into measurable improvements in engineering productivity and software delivery.

You will work closely with OpenAI Product, Research, Engineering, Security, Sales, and the broader Codex organization, translating real-world deployment experience into high-signal product and model feedback. Success is measured by production systems, sustained developer adoption, and meaningful improvements to how engineering organizations build software—not simply successful demonstrations or enablement activity.

This role is based in our London office. We use a hybrid work model of 3 days in the office per week and offer relocation assistance to new employees.

In this role, you will:

  • Partner directly with engineering leaders and hands-on developers to identify high-value opportunities for Codex and translate them into technical architectures, implementation plans, evaluation strategies, and measurable success criteria.

  • Design, build, and deploy AI-powered software development workflows that improve how engineering teams plan, write, test, review, debug, and deliver software.

  • Work hands-on in code to build prototypes, evaluation harnesses, reference implementations, integrations, workflow automations, and production accelerators—often using Codex as part of your own development process.

  • Help customers progress from promising experiments to reliable production workflows, sustained developer adoption, and scaled impact across engineering organizations.

  • Design systematic approaches for evaluating AI coding systems using representative software engineering tasks, automated graders, production signals, and developer feedback.

  • Make sound technical decisions across models, agents, tools, developer environments, integrations, reliability, observability, latency, cost, safety, security, and operational readiness.

  • Diagnose complex implementation challenges, reproduce failures, test hypotheses, and drive technical blockers toward resolution.

  • Lead technical deep dives, workshops, and hands-on enablement that help engineering teams understand and adopt advanced AI coding workflows effectively and safely.

  • Gather high-fidelity insights from real-world Codex deployments and translate them into clear product proposals, model feedback, and technical requirements for OpenAI Product, Research, and Engineering teams.

  • Create reusable architectures, tooling, examples, guides, and technical patterns—including contributions to resources such as the OpenAI Cookbook—that accelerate future Codex deployments.

  • Influence customer engineering strategy by helping technical leaders understand how AI coding systems can reshape their software development lifecycle, engineering practices, and organizational workflows.

You’ll thrive in this role if you:

  • Have a demonstrated track record of designing, building, and delivering software or AI systems in enterprise environments, including taking systems from prototype to production. Relevant backgrounds may include applied AI or ML engineering, forward-deployed engineering, software engineering, developer tooling, customer engineering, solutions architecture, or technical consulting.

  • Can point to substantial personal contributions in code, architecture, evaluation, debugging, integrations, or production engineering—not only program, enablement, or stakeholder management.

  • Are highly proficient in Python and comfortable working across modern software development environments; experience with JavaScript, TypeScript, or another relevant language is valuable.

  • Are an active user of AI coding tools and have developed a strong point of view on how AI can improve developer productivity and software engineering workflows.

  • Enjoy building high-signal prototypes, integrations, automations, and production solutions that demonstrate and deliver what AI coding systems can enable.

  • Understand how to evaluate AI coding systems systematically, including designing representative tasks, automated evaluations, production signals, and mechanisms for incorporating developer feedback.

  • Have navigated enterprise production requirements such as developer tooling integrations, reliability, observability, security, privacy, data governance, performance, and cost.

  • Can connect technical decisions to developer workflows, adoption, engineering productivity, and measurable business outcomes.

  • Communicate with clarity and credibility across hands-on engineers, engineering leaders, security teams, product leaders, and executives.

  • Are comfortable leading technical workshops and hands-on sessions that help engineering organizations adopt new development workflows and technologies.

  • Bring high agency, strong technical judgment, and end-to-end ownership in ambiguous and rapidly evolving environments.

  • Learn quickly, challenge assumptions constructively, and collaborate with humility; deep prior experience with OpenAI products is not required.

  • Are able to speak English and French fluently.

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 People Analyst

The People Analyst is the professional responsible for transforming people data into strategic insights for HR decision-making. They combine data analysis knowledge with people management vision to help organizations understand workforce metrics, turnover, engagement, and diversity.

Key skills include people analytics, workforce analytics, turnover and retention analysis, HR metrics (time-to-hire, cost-per-hire, e-NPS), data visualization (Power BI, Tableau, Visier), workforce planning, and compensation analysis. Knowledge of statistics, SQL, and people analytics tools is a differentiator.

People Analysts in technology companies are highly valued, especially those who can translate complex people data into actionable insights for retention, diversity, and growth strategies. The field offers opportunities from HR analyst to head of people analytics, with a focus on data-driven people management.

About Scrum Master

The Scrum Master is the professional responsible for facilitating the adoption of Scrum and agile practices within development teams. They act as servant leaders, removing impediments, promoting continuous improvement, and ensuring Scrum events and ceremonies happen in the best possible way.

Key skills include event facilitation (sprint planning, daily, review, retrospective), backlog management, team coaching, conflict resolution, and agile metrics (velocity, burndown, cycle time). Knowledge of Jira, Trello, Azure DevOps, and frameworks like Kanban, XP, and SAFe is a differentiator.

Scrum Masters in technology companies are highly valued, especially those who can promote team autonomy, create psychologically safe environments, and lead agile transformations at scale. The field offers opportunities from junior scrum master to agile coach, head of agile, and director of agile transformation.

About Talent Acquisition

Talent Acquisition is the strategic area responsible for attracting, selecting, and hiring the best professionals for the organization. Unlike traditional recruitment, TA acts as a strategic business partner, aligning talent acquisition with the company's long-term objectives.

Key skills include advanced sourcing, employer branding, labor market analysis, talent pipeline management, and candidate experience. Tools like LinkedIn Recruiter, ATS (Greenhouse, Lever, Ashby), and assessment platforms are essential.

TA professionals in technology companies are highly valued, especially those who master tech sourcing, workforce planning, and recruitment metrics like time-to-hire and cost-per-hire.

About Sales

The Sales area is responsible for generating revenue and expanding the customer base. B2B and B2C sales professionals are fundamental for sustainable growth of any organization.

Key skills include prospecting, negotiation, CRM (Salesforce, HubSpot), sales enablement, and value consulting. The consultative and data-driven approach is increasingly valued.

Consultative sellers and senior Sales Managers have very high earning potential, with OTE (On-Target Earnings) that can exceed monthly salaries in technology companies.

About Agile

The Agile and Digital Transformation area is fundamental for organizations seeking efficiency and rapid adaptation. Agile professionals facilitate processes, eliminate bottlenecks, and promote a culture of continuous improvement.

Key certifications include CSM, PSM, SAFe, ICP, and Kanban. Knowledge of Scrum, Kanban, XP, and agile frameworks is essential, as are leadership and facilitation soft skills.

Senior Agile coaches and Scrum Masters are highly valued, especially in technology companies that adopt agile methodologies at scale.

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Finance Career Guide

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Communication Career Guide

Journalism, PR, Corporate Communication, Content Marketing, and Multimedia Production.

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Administration Career Guide

Business Management, HR, Logistics, Consulting, Project Management, and Entrepreneurship.

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Data Career Guide

Data Science, Data Engineering, BI, Machine Learning, and AI. From training to the job market.

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Product Career Guide

Product Management, Product Ownership, Agile, Scrum, and OKRs. From strategy to execution.

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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

The Ultimate Guide to Global E-commerce

The Ultimate Guide to Global E-commerce: Careers, Technology, and the Best Opportunities

By Mondywork | Career and Technology Insights

How borderless digital commerce is shaping the future of work and creating high-value, six-figure roles for Managers and Engineers.

1. The Current Landscape of Global E-commerce

E-commerce is no longer just a "digital storefront"; it has become the core revenue engine for the world's biggest brands. According to projections by eMarketer, global retail e-commerce sales continue to break records, easily surpassing the multi-trillion-dollar mark annually.

Today, the market thrives in the era of Cross-Border Commerce, where consumers buy from brands across continents with the same ease as a local purchase. To sustain this massive operation, companies are investing heavily in cloud infrastructure, data-driven smart logistics, and modern tech architectures like Headless Commerce — where the front-end (user interface) is completely decoupled from the back-end (sales engine), ensuring lightning-fast loading speeds and highly personalized experiences.

2. The Pillars of the Operation: Who Makes E-commerce Happen?

Behind every "1-Click Buy" button, there is a complex engineering structure bridging business and technology. Two fundamental professionals stand out in this ecosystem:

The E-commerce Manager

This is the strategic brain of the business. The E-commerce Manager isn't just a digital inventory keeper; they are performance analysts obsessed with metrics and growth.

  • Core Responsibilities: Conversion Rate Optimization (CRO), P&L (Profit and Loss) management, catalog curation, dynamic pricing, and coordinating traffic campaigns alongside the Marketing team.
  • Key Metrics: CAC (Customer Acquisition Cost), LTV (Lifetime Value), ROAS (Return on Ad Spend), and Churn Rate.
  • Ideal Profile: Highly analytical, data-driven, with strong cross-departmental leadership skills (uniting logistics, marketing, and tech).

The E-commerce Engineer (Developer)

The technological arm and executor of the business vision. Developers focused on e-commerce are highly valued because they understand that every millisecond of latency in the code translates to lost revenue.

  • Core Responsibilities: Building and maintaining storefronts, complex API integrations (ERPs, CRMs, Payment Gateways, and shipping providers), developing custom themes, and ensuring information security (PCI Compliance).
  • Tech Stack: Varies by platform, but mastering JavaScript (React/Next.js for Headless), Node.js, GraphQL, and specific template languages (like Liquid for Shopify) is essential.
  • Ideal Profile: Technical problem-solver with a strong business acumen, deeply focused on Web Performance (Core Web Vitals) and scalability.

3. The Biggest Market Players (SaaS and PaaS Platforms)

To succeed in this field, it is crucial to master or be deeply familiar with the giants that power virtual stores globally:

Shopify / Shopify Plus:
The Canadian giant dominates the global SaaS market. With a massive app ecosystem and Liquid as its template language, Shopify Plus is the go-to choice for scalable enterprise brands. Shopify Developers are in incredibly high demand across the US and European markets.
VTEX:
A Latin American powerhouse that became a formidable global player, now listed on the NYSE. The VTEX IO architecture, based on React and Node.js, changed the game for Enterprise development. VTEX Managers and Devs have guaranteed opportunities in large B2B and B2C corporations.
Magento (Adobe Commerce):
Known for its extreme robustness and flexibility (PaaS/On-Premise). It requires solid knowledge of PHP and complex software architecture. It is the platform of choice for massive, highly customized operations.
Salesforce Commerce Cloud:
Aimed at the top of the pyramid (large enterprise accounts), it integrates seamlessly into the Salesforce CRM ecosystem, requiring highly specialized professionals versed in its proprietary languages and corporate processes.

4. Where Are the Best Opportunities and How to Break In?

The e-commerce market is one of the biggest hubs for global remote jobs. US and European companies are actively seeking top-tier talent worldwide, offering aggressive compensation (often six-figure salaries in USD or EUR) to professionals who can scale their operations.

For those looking to enter or pivot to this area:

  1. Specialize in a Platform: Being a "Generic Developer" pays the bills, but being a "VTEX IO Specialist" or a "Shopify Expert" multiplies your market value. Pursue official certifications.
  2. Master APIs and Integrations: Modern e-commerce doesn't live in a vacuum. Knowing how to connect a store to a logistics system, a marketing automation software (like Klaviyo or Brevo), or a global ERP is the most valued skill today.
  3. Build a Real Portfolio: For devs, create test stores, build a public app for the Shopify App Store, or contribute to Headless projects. For managers, showcase real conversion optimization cases and campaign management on your LinkedIn.
  4. Flawless Technical Communication: Fluent English (especially asynchronous communication for documentation, Jira tickets, and Slack) is the golden key to unlocking those US Remote and global six-figure roles.
"In e-commerce, the code isn't just software; it's the store itself. If the site crashes on Black Friday, the company bleeds money. That's why highly qualified professionals in this field are never out of work."

Accelerate Your Career with Mondywork

Whether you are a business strategist or a software engineer, the best E-commerce and Tech jobs—including global remote opportunities—are published daily on our board.

Golden Tip: Browse the Mondywork platform, set up your customized Job Alerts on our homepage, and ensure your resume highlights the technologies mentioned in this article. The market won't wait, and your next big global opportunity might be just one click away.