Job Summary: We are seeking a Backend Developer to lead the development of AI Agents and intelligent automation systems, focused on transforming potential into productive and scalable solutions on GCP. Key Highlights: 1. Collaborative, diverse, and dynamic environment. 2. Autonomy, learning, and accelerated growth. 3. Building a real-market-impact success story. Having a compatible resume is important, but at **Hero**, we believe selecting a new team member goes far beyond that. What we truly seek is ownership, attitude, and alignment with our mission: **transforming the future of independent work**. We are a team that learns fast, works closely together, and turns challenges into results. We value respect, curiosity, and the power of diversity—because when different perspectives converge, great ideas emerge! We are at a unique moment: doubling in size year after year, backed by a high-caliber team and gaining increasing market presence. This is the right place for those who want to learn extensively, leave their mark, and build **something truly meaningful**. **What you’ll find here:** A **collaborative, diverse, and dynamic** environment. Ample space for **autonomy, learning, and accelerated growth**. Opportunity to contribute to building a **real-market-impact success story**. A **financially solid, award-winning, and market-recognized** company. ***About the Challenge:*** ---------------------- We’re looking for a **Backend Developer** to lead the development of **AI Agents and intelligent automation systems!** The focus of this challenge is to transform the potential of conversational agents into productive, secure, and scalable business solutions. You will be primarily responsible for architecting integrations between language models and real-world workflows, ensuring our automations are robust, auditable, and operate with high performance within the **GCP** ecosystem. If you believe you have the drive and determination to make this happen, this role could be yours! Want to be part of this journey and leave your legacy? **Join Hero!!** **Responsibilities and Duties** * **Agent Architecture:** Design and implement autonomous agents leveraging *tool calling* and logical reasoning to solve complex tasks; * **Prompt Engineering:** Develop and optimize structured prompts to ensure consistent outputs and minimize security risks (e.g., prompt injection); * **Microservice Development:** Build and maintain robust APIs to support agents, using **Node.js** or **Python**; * **Workflow Orchestration:** Implement automation chains using **LangChain**, **Langflow**, or similar tools; * **Deployment and Infrastructure:** Manage the agent lifecycle in production using **Cloud Run** or **Cloud Functions** on **Google Cloud Platform (GCP)**; * **Observability and Auditability:** Implement logging, traceability, and auditing mechanisms to monitor agent behavior, costs, and accuracy in real time. **Requirements and Qualifications** * Solid backend development and microservice architecture experience; * Strong proficiency in **SQL (PostgreSQL/MySQL)** and **NoSQL (MongoDB/Firestore)** databases for structuring data consumed/generated by AIs; * Practical experience with AI orchestration frameworks (e.g., **LangChain, Langflow**); * Mastery of **Prompt Engineering** techniques; * Experience with containers (**Docker**) and serverless deployments on **GCP (Cloud Run)**; * Familiarity with consuming LLM APIs (OpenAI, Gemini/Vertex AI, Anthropic); * Process automation mindset and focus on solving business problems; * Experience building MCPs for AI agents; * Willingness to work onsite at our São Paulo headquarters once per month. *Not mandatory, but highly valued if you have:* * **Neuro-Symbolic Layers:** Knowledge or experience combining statistical models (LLMs) with symbolic logic (rule engines, deterministic validators) to mitigate hallucinations; * **AI Quality and Testing:** Experience with evaluation pipelines (e.g., RAGAS, DeepEval) and automated testing to validate agent accuracy; * **Advanced Observability:** Familiarity with specialized LLM Ops tools (e.g., LangSmith, Arize Phoenix, or customized Cloud Monitoring). *Expected Behaviors:* * **Pragmatism:** Ability to select the optimal technological solution while balancing technical perfectionism and business value delivery; * **Radical Autonomy:** Capacity to receive a complex business problem and independently deliver a complete technical solution without constant supervision; * **Accountability:** Ownership mindset toward the code and infrastructure you produce; * **Influence Skills:** Ability to convince the team of technical decisions based on data and evidence—not hierarchical authority; * **Learning Mindset:** Continuous interest in exploring new GCP tools and backend & AI trends to apply in daily work. **Additional Information** * Equipment provision; * Paid leave; * Health benefits; * Dental benefits; * Accounting support allowance; * Life insurance; * Private pension plan; * Accident insurance; * Birthday day off; * WellHub; * Baby Hero Pause: days to spend with your newborn; * Marriage pause; * Daycare reimbursement; * Hero Virtual Office; * Excellent work environment with leisure areas, game rooms, and plenty of relaxation! #### ***Being a Hero means transforming the future of independent work*** At Company Hero, we believe being a PJ professional doesn’t mean going it alone. Our mission is to bring convenience, security, and peace of mind to millions who have chosen this lifestyle—and we’re building a complete ecosystem to achieve that. Today, over 22 million Brazilians work as PJs. By 2030, one in two people will be working under this model. For too long, no one supported these professionals—drowning in bureaucracy and lacking assistance. **We exist to change that.** #### **What We Do** At Company Hero, we bring everything a PJ professional needs into one place! From company formation and legal compliance to invoice and tax management. From the peace of mind of having a virtual office to healthcare and insurance coverage. For companies, we’ve built technology that simplifies managing PJ teams. It’s the complete ecosystem for PJ professionals: designed to eliminate bureaucracy and free up time for what truly matters—growing and thriving. #### **Our Results So Far** We now serve over 50,000 active customers, impact 100,000 PJs, and partner with 3,000 accounting firms. Our team of 150 Heroes drives R$ 50 million in annual recurring revenue, growing 70%–100% yearly, and earning recognition from EXAME, Reclame Aqui, Endeavor Scale-Up, and Cubo. #### **What’s Next** We’re expanding internationally, launching new products, and accelerating even further. It’s time to co-create the future of work. #### **Our MAGIC** At Hero, we don’t believe in work without delivery! Real Heroes make ***M\-Á\-G\-I\-C\-A*** every day. These superpowers guide our decisions, connect us, and push us beyond limits! * *PJ Mission Is Our DNA* * *Exceptional Customer Service* * *Grit to Be the Best* * *Infinite Curiosity* * *Collaboration Without Ego* * *Joy with Professionalism* This is the spark driving every product, every achievement, and every story built here!! ***So, ready to make a difference in the lives of THOUSANDS of people?*** If you want to join a team that dreams big, grows fast, and believes work is about purpose and impact—come be a Hero!! Let’s transform the lives of millions of independent professionals—together! **Visit our Careers Page:** https://go.companyhero.com/carreiras\-company\-hero