Backend Developer Senior - Java

🚀 Join Our Data Products and Machine Learning Development Remote Startup! 🚀 Mutt Data is a dynamic startup committed to crafting innovative solutions using cutting-edge Big Data, Machine Learning and AI technologies. We're looking for a Backend Developer Senior to join our team and work on an AI-driven initiative for one of the leading e-commerce and fintech companies in Latin America. The team focuses on fraud prevention and case management, with the challenge of scaling the automated resolution of fraud reports while maintaining the accuracy and quality of a human reviewer. As part of the backend team, you'll work on the migration and orchestration of agentic processes responsible for case resolution, building high-volume, low-latency solutions with Java in a near-real-time environment. The role involves working with AI agents, MCP, multiple data sources and complex orchestration flows, designing robust and scalable backend architectures. If you consider yourself a data nerd and are excited about building AI-powered systems at scale, we'd love to connect! 🐶🚀

🚀 What We Do • Leveraging our expertise, we build modern Machine Learning systems for demand planning and budget forecasting.

• Developing scalable data infrastructures, we enhance high-level decision-making, tailored to each client.

• Offering comprehensive Data Engineering and custom AI solutions, we optimize cloud-based systems.

• Using Generative AI, we help e-commerce platforms and retailers create higher-quality ads, faster.

• Building deep learning models, we enhance visual recognition and automation for various industries, improving product categorization, quality control, and information retrieval.

• Developing recommendation models, we personalize user experiences in e-commerce, streaming, and digital platforms, driving engagement and conversions.

🌟 Our Partnerships • Amazon Web Services

• Astronomer

• Databricks

🌟 Our Values • 📊 We are Data Nerds

• 🤗 We are Open Team Players

• 🚀 We Take Ownership

• 🌟 We Have a Positive Mindset

🔍 Curious about what we’re up to? Check out our case studies and dive into our blog post to learn more about our culture and the exciting projects we’re working on! 🚀

Responsibilities 🤓 • Design, develop, and maintain backend services in Java.

• Contribute to architectural decisions and help define technical standards.

• Build and evolve microservices-based architectures.

• Apply hexagonal architecture principles (or equivalent approaches with clear separation of concerns).

• Design reusable, well-abstracted components.

• Conduct thorough code reviews, promoting high-quality standards and best practices.

• Collaborate within a team focused on AI-driven solutions.

Required Skills 💻 • Strong experience developing services in Java.

• Proven experience designing and implementing microservices architectures.

• Practical experience applying hexagonal architecture (or similar layered architecture patterns).

• Ability to design modular systems with proper abstraction and code reuse.

• Willingness to work in an AI-oriented team environment.

• Experience working with AI-assisted development (active use of tools such as GitHub Copilot, Claude Code, or similar tools as part of your daily workflow).

• Open mindset toward integrating AI tools into the development lifecycle.

• Comfortable adapting to new AI-driven workflows and development dynamics.

Nice to have 💻 • Knowledje of or hands-on experiencie with AI agents.

🎁 Perks • 🌍 Remote-first cultur e – work from anywhere!

• 🚀 In-Company English Lessons.

• 💪 Wellhub or sports club stipend to stay active

• 🚀 AWS, DBT, Google Cloud, Azure & Databricks certifications fully covered

• 🍕 Food credits via Pedidos Ya – because great work deserves great food.

• 🎂 Birthday off + an extra vacation week (Mutt Week! 🏖️)

• 🤝 Referral bonuses – help us grow the team & get rewarded!

• ✈️ 🏝️ Annual Mutters' Trip – an unforgettable getaway with the team!

• 👶 Monthly Childcare Reimbursement – Because supporting families matters too