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Back End Java Developer Sr

🚀 Join Our Data Products and Machine Learning Development Remote Startup! 🚀


Mutt Data is a dynamic startup committed to crafting innovative systems using cutting-edge Big Data and Machine Learning technologies.


We’re looking for a Back end Java Developer Sr to help take our expertise to the next level. If you consider yourself a data nerd like us, we’d love to connect! 🐶🚀


You’ll be building and maintaining high-performance backend applications, where response times are under 5–10ms and handling 100k+ requests per minute is just another day at work.


🚀 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
  • Google Cloud
  • Astronomer
  • Databricks
  • Kaszek
  • Product Minds
  • H2O.ai
  • Soda


🌟 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 🤓
  • Develop and maintain high-quality Java code that operates reliably in production environments.
  • Use automated tools and methodologies to ensure the consistent production of maintainable and scalable code.
  • Translate business requirements into backend software implementations, making informed decisions that balance time, quality, and client-specific needs.
  • Research and apply best practices, methodologies, and tools to create top-tier code solutions.
  • Understand complex backend systems and collaborate effectively with peers and client teams to achieve productive outcomes.
  • Build backend components that enable rapid self-service of data products using modern technologies.
  • Contribute to defining project roadmaps, timelines, and estimates.
  • Document and share internal knowledge regarding best practices in Java backend development.


Required Skills 💻
  • Strong knowledge of Java backend development (minimum 4 years of experience).
  • Commitment to code hygiene, including code review, adherence to standards, documentation, testing, CI/CD, and general software development best practices.
  • Ability to create implementation plans by evaluating the pros and cons of different approaches.
  • Solid understanding of backend application development fundamentals and practical knowledge of various programming paradigms.
  • Intermediate-level English proficiency for writing technical documents such as Design Documents.
  • Excellent communication skills.


Nice to Have ✨
  • Experience in designing and developing scalable backend systems using various technologies.
  • Extremely desirable: experience serving highly concurrent, low latency applications.
  • Experience with cloud-native backend development and microservices architecture.
  • Positive and solution-oriented problem-solving attitude.
  • Knowledge of some AWS (or GCP) services.
  • Previous experience in client-facing technical consulting roles.
  • Proven track record of delivering high-quality backend solutions.
  • Experience with modern data architectures and Java libraries related to data processing, such as Apache Kafka, Apache Beam, or Apache Flink.


🎁 Perks
  • Remote-first culture – work from anywhere! 🌍
  • AWS & Databricks certifications fully covered 🚀
  • Birthday off + an extra vacation week (Mutt Week! 🏖️)
  • Referral bonuses – help us grow the team & get rewarded!
  • Maslow: Monthly credits to spend in our benefits marketplace.
  • ✈️🏝️ Annual Mutters' Trip – an unforgettable getaway with the team!


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What You Should Know About Back End Java Developer Sr, Mutt Data

Join Mutt Data, a vibrant remote startup based in Argentina, as a Back End Java Developer Sr! If you’re passionate about building high-performance backend applications and have a knack for keeping response times under 5–10ms while handling over 100k requests per minute, you’ve found the right place. Here at Mutt Data, we leverage the latest Big Data and Machine Learning technologies to create innovative solutions for demand planning and budget forecasting. You’ll be responsible for developing and maintaining top-notch Java code, collaborating with teammates and clients to bring projects to life, and using cutting-edge tools to ensure scalability and maintainability in our systems. With our commitment to detail and excellence, you’ll engage in best practices while contributing to project roadmaps and timelines. Plus, you’ll have the chance to work on exciting projects, from enhancing visual recognition to personalizing user experiences across various digital platforms. If you’re ready to take your Java expertise to the next level while working in a supportive and fun environment, don’t miss the chance to be a part of our team! We offer a fully remote culture, competitive benefits, and annual team getaways that you’ll cherish for a lifetime.

Frequently Asked Questions (FAQs) for Back End Java Developer Sr Role at Mutt Data
What are the main responsibilities of a Back End Java Developer Sr at Mutt Data?

As a Back End Java Developer Sr at Mutt Data, your main responsibilities include developing and maintaining high-quality Java code, translating business requirements into backend software implementations, collaborating with peers and client teams, and ensuring the consistent production of maintainable and scalable code. You'll also document internal knowledge and contribute to project roadmaps, all while executing best practices in Java backend development.

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What qualifications are needed for the Back End Java Developer Sr position at Mutt Data?

To excel as a Back End Java Developer Sr at Mutt Data, you should have a minimum of 4 years of strong knowledge in Java backend development. A thorough understanding of backend application fundamentals, commitment to code hygiene, and proficiency in evaluating implementation plans are crucial. Intermediate-level English proficiency for writing technical documentation and excellent communication skills are also required.

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What technologies should a Back End Java Developer Sr be familiar with at Mutt Data?

As a Back End Java Developer Sr at Mutt Data, familiarity with various programming paradigms, cloud-native backend development, and microservices architecture is desirable. Experience with AWS or Google Cloud services, as well as modern data architectures and Java libraries such as Apache Kafka or Apache Beam, will be particularly valuable in our fast-paced and innovative environment.

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What is the work culture like for a Back End Java Developer Sr at Mutt Data?

The work culture at Mutt Data is remote-first and designed for flexibility, allowing you to work from anywhere. We value open teamwork, ownership, and a positive mindset. You'll be joining a group of enthusiastic data nerds who are passionate about their work, and we emphasize collaboration, continuous learning, and innovation.

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What perks can a Back End Java Developer Sr expect at Mutt Data?

A Back End Java Developer Sr at Mutt Data can expect an array of perks, including fully covered AWS and Databricks certifications, a birthday off, and an extra vacation week known as Mutt Week. You’ll also benefit from referral bonuses, monthly credits for marketplace benefits, and a fantastic annual team getaway that promises unforgettable experiences.

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Common Interview Questions for Back End Java Developer Sr
Can you describe your experience with Java development?

Highlight specific projects you've worked on, focusing on the scale, performance, and challenges faced. Discuss the methodologies you used, such as agile or waterfall, and demonstrate your deep understanding of the Java ecosystem.

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How do you ensure code quality and maintainability in your projects?

Discuss your commitment to code hygiene, including code reviews, adherence to standards, and the use of testing frameworks. Mention any tools or practices you use for code analyses, such as SonarQube or CI/CD pipelines.

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What strategies would you use to translate business requirements into technical specifications?

Explain your approach to gathering requirements through stakeholder communication, creating user stories, and using tools like UML diagrams to clarify technical specifications. Stress the importance of aligning technical solutions with business goals.

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Can you give an example of a complex backend system you've worked on?

Share a detailed example of a backend system you've developed or maintained. Describe the architecture, technologies used, challenges you faced, and how your contributions improved system efficiency or scalability.

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How do you handle working in a remote team?

Emphasize your communication skills and ability to use collaboration tools effectively. Discuss how you keep in touch with teammates, participate in meetings, and manage your time while working remotely.

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What is your experience with cloud services like AWS or GCP?

Detail your experience using cloud services, including specific applications or services you’ve utilized, such as EC2, Lambda, or managed databases. Discuss any cloud-related projects that highlight your proficiency.

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How do you approach debugging and troubleshooting issues in code?

Describe your systematic approach to identifying and resolving issues, including using debugging tools, reading logs, and engaging with team members for insights. Emphasize your logical thinking and patience in finding solutions.

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What is your experience with testing and deployment processes in Java?

Discuss the testing frameworks you've used (like JUnit or TestNG), continuous integration practices, and deployment strategies (such as CI/CD pipelines). Provide examples of how efficient testing has led to smoother deployments.

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Can you explain microservices architecture and its benefits?

Define microservices architecture clearly and discuss its advantages, such as scalability, ease of updates, and resilience. Provide examples of situations where you’ve implemented microservices and how they benefited the project.

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What do you find most exciting about being a Back End Java Developer?

Share your enthusiasm for problem-solving, the challenge of optimizing systems, and working with new technologies. Highlight how you appreciate the impact of backend development on user experience and business objectives.

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Full-time, remote
DATE POSTED
April 3, 2025

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