Middle AI Agent & Developer Experience Engineer

Why Join Exadel

We’re an AI-first global tech company with 25+ years of engineering leadership, 2,000+ team members, and 500+ active projects powering Fortune 500 clients, including HBO, Microsoft, Google, and Starbucks.

• From AI platforms to digital transformation, we partner with enterprise leaders to build what’s next.
• What powers it all? Our people are ambitious, collaborative, and constantly evolving.

About the Client

A leading global digital banking platform and one of the largest neobanks in Latin America, headquartered in Brazil. The company provides a mobile-first suite of financial services—including credit cards, savings accounts, and investments—designed to eliminate bureaucracy and high fees. By leveraging advanced data analytics and a customer-centric digital infrastructure, the organization delivers transparent and accessible financial solutions to millions of users across Brazil, Mexico, and Colombia.

What You’ll Do

Design, build, test, and maintain AI agent capabilities, including tools, skills, commands, and prompts

Apply prompt-engineering techniques to improve agent accuracy, reliability, and usability

Define structured output contracts, error-handling mechanisms, and evaluation methods for measuring agent behavior

Develop extensions, plugins, and integrations for AI-powered development tools

Build and maintain reusable application templates that establish consistent engineering standards across generated projects

Develop developer-facing interfaces and internal tooling using React and TypeScript

Improve the developer experience through actionable feedback, clear error messages, reliable defaults, and streamlined workflows

Implement and maintain quality gates, including type checking, linting, automated testing, and build validation

Apply containerization and runtime standards to support secure and consistent application development

Collaborate with platform engineers to integrate AI capabilities with infrastructure, CI/CD pipelines, and deployment workflows

Monitor platform usage, identify friction points, and continuously improve the experience based on observed behavior and user feedback

Document technical decisions, agent behavior, platform capabilities, and development workflows

Incorporate AI agents into daily engineering activities and identify opportunities to improve their effectiveness

What You Bring

A solid foundation in application architecture, software engineering, and modern development practices

Hands-on experience designing and implementing AI agents, including tools, skills, commands, and prompt engineering

Experience evaluating AI agent behavior systematically using defined criteria, test cases, and supporting evidence

Experience with React and TypeScript, including modern frontend development patterns and build tooling

Experience building reusable application templates, developer tools, internal platforms, or self-service engineering capabilities

Knowledge of automated testing, type checking, linting, build validation, and software-quality practices

Familiarity with containerization and application runtime environments

Working knowledge of cloud infrastructure, CI/CD concepts, and application deployment workflows

Strong technical English skills, including written documentation and remote collaboration

Strong analytical and problem-solving abilities with excellent attention to detail

Ability to work independently, navigate ambiguity, and take ownership of technical outcomes

Interest in incorporating AI agents into everyday engineering workflows and continuously improving their performance

Nice to have

Experience developing plugins, extensions, or integrations for AI-powered development environments

Experience using Python for supporting services, automation, or AI-related workflows

Familiarity with enterprise application security, governance requirements, and engineering guardrails

Experience designing structured agent interfaces, typed outputs, and robust error-handling mechanisms

Understanding of cloud-native architectures, CI/CD pipelines, and production deployment practices

Experience improving developer productivity through internal platforms, reusable templates, or self-service tooling

Exposure to AI evaluation frameworks, observability, or agent performance monitoring

English level

Upper-Intermediate

Work Type: Remote

Eligible Locations: São Paulo or Rio de Janeiro, Brazil

Legal & Hiring Information

Exadel is proud to be an Equal Opportunity Employer committed to inclusion across minority, gender identity, sexual orientation, disability, age, and more

Reasonable accommodations are available to enable individuals with disabilities to perform essential functions

Please note: this job description is not exhaustive. Duties and responsibilities may evolve based on business needs

Compensation details are shared with candidates at the early stage of the recruitment process.

The offer is not binding until a signed contract is in place.

Your Benefits at Exadel

Exadel benefits vary by location and contract type. Your recruiter will fill you in on the details.

International projects

In-office, hybrid, or remote flexibility

Medical healthcare

Recognition program

Ongoing learning & reimbursement

Well-being program

Team events & local benefits

Sports compensation

Referral bonuses

Top-tier equipment provision

Exadel Culture

We lead with trust, respect, and purpose. We believe in open dialogue, creative freedom, and mentorship that helps you grow, lead, and make a real difference. Ours is a culture where ideas are challenged, voices are heard, and your impact matters.