As a Software Engineer at Mariana Minerals, your day-to-day responsibilities will bridge the gap between software development and industrial engineering. You will be responsible for:

• Developing and Scaling Applications – Writing clean, maintainable full-stack code for process modeling applications, field operations tools, and data visualization dashboards.
• Designing System Integrations – Building APIs, webhooks, and data pipelines that connect physical field machinery, legacy industrial software, and modern cloud infrastructures.
• Collaborating Cross-Functionally – Working closely with process, chemical, mining, and mechanical engineers to understand their workflows and translate their requirements into intuitive software solutions.
• Optimizing Data Reliability – Ensuring that critical operational data is accurately captured, processed, and stored in highly reliable relational databases like PostgreSQL.
• Driving Technical Best Practices – Participating in code reviews, mentoring junior engineers, and continuously improving the team's development workflows and AI-assisted coding practices.

To be competitive for a Software Engineer position at Mariana Minerals, you should possess a strong blend of technical skills, practical experience, and collaborative soft skills.

Technical Skills

• Must-have skills – Strong proficiency in modern full-stack development (such as React, Node.js, or Python), experience designing and integrating RESTful and GraphQL APIs, and deep familiarity with relational databases (specifically PostgreSQL).
• Nice-to-have skills – Experience with industrial IoT protocols, data visualization libraries (like D3.js or Three.js), cloud infrastructure (AWS or GCP), and exposure to process modeling or physical engineering disciplines.

Experience & Soft Skills

• Experience level – Typically requires a Bachelor’s degree in Computer Science or a related engineering field, alongside 3+ years of professional software engineering experience (or equivalent practical experience for senior roles).
• Soft skills – Exceptional verbal and written communication, a proactive mindset focused on team success, the ability to explain complex software concepts to non-software engineers, and strong self-direction in ambiguous environments.

Q: How difficult are the technical interviews at Mariana Minerals? A: The difficulty is rated as average to difficult, depending on your familiarity with practical, hands-on coding and system design. The company avoids abstract brainteasers, focusing instead on real-world engineering tasks like building a frontend and backend for a unified application.

Q: What is the company's policy on remote versus in-office work? A: Mariana Minerals highly values in-office collaboration, with primary hubs in San Francisco, CA, Houston, TX, and Ann Arbor, MI. Be sure to clarify the exact location and relocation expectations for your specific headcount early in the recruiting process, as roles are often tied to specific physical offices.

Q: How should I prepare for the AI-forward technical interviews? A: Practice coding with AI copilots while explaining your thought process out loud. Focus on directing the AI, critically evaluating its output, and prioritizing core features over minor details. Do not blindly accept whatever code the AI generates.

Q: What is the typical timeline from the initial screen to an offer? A: The process can be fairly lengthy, often taking several weeks. Because the onsite loop involves multiple team managers and cross-functional stakeholders, coordinating schedules can sometimes slow down the progression between rounds.

• Prioritize Ruthlessly in Coding Rounds: The coding tasks are intentionally large and not designed to be completed in one sitting. Focus on building a functional, clean core architecture, and be prepared to explain what you would build next and why.
• Practice "Less is More" in Presentations: During the case study presentation, pay strict attention to the time limit. Keep your presentation concise to leave plenty of room for interactive questions and discussion with the panel.
• Explain Your Thoughts Out Loud: Whether you are navigating an AI-enabled coding screen or discussing a system design scenario, interviewers are judging your senior-like behavior and problem-solving methodology. Verbalizing your decisions is key.

• Show Curiosity for the Physical Domain: You do not need to be a mining or chemical expert, but showing a genuine interest in how software interacts with physical machinery and process modeling will set you apart from other candidates.

A Software Engineer role at Mariana Minerals offers a rare and exciting opportunity to build software that directly impacts physical-world operations, resource optimization, and industrial modeling. The interview process is designed to find pragmatic, collaborative engineers who excel at real-world coding, system integration, and cross-functional communication.

To stand out, focus your preparation on practical full-stack development, robust system design using databases like PostgreSQL, and honing your ability to explain your technical decisions clearly. Approach your interviews not just as a test of your coding speed, but as an opportunity to demonstrate your proactive ownership, collaborative mindset, and ability to deliver high-quality solutions under real-world constraints.

The salary data above represents the typical compensation ranges for engineering roles at Mariana Minerals. When evaluating your offer or preparing for salary discussions, consider how your experience level and specific office location (such as San Francisco versus Houston) align with these ranges. For additional salary data points, interview insights, and preparation resources, you can explore further on Dataford. Good luck with your preparation—your journey to joining the engineering team at Mariana Minerals starts now.