Software Engineer II - Backend

The Software Engineer II - Backend at MINT MOBILE is tasked with designing, implementing, and maintaining scalable backend services, integrating our platform with external vendors, and collaborating with diverse teams on innovative projects. This role also includes mentoring junior engineers and participating in on-call rotations.

To qualify for the Software Engineer II - Backend role at MINT MOBILE, candidates should possess significant experience in Node.js/TypeScript, database technologies (such as SQL and NoSQL), and AWS fundamentals. A background in building high availability systems and clear communication skills regarding technical trade-offs is also vital.

Essential technical skills for the Software Engineer II - Backend role at MINT MOBILE include expertise in Node.js/TypeScript, familiarity with various database technologies (SQL, NoSQL, and in-memory), and a solid understanding of AWS. Knowledge in best coding practices, system scalability, and high availability is also crucial.

MINT MOBILE strongly believes in employee development and offers opportunities for Software Engineer II - Backend positions to mentor junior colleagues, collaborate on projects, and contribute to technical design documentation, fostering a culture of continuous learning and improvement.

A Software Engineer II - Backend at MINT MOBILE can expect competitive salaries, a variety of benefits including health and disability insurance, retirement plans like 401(k), unlimited vacation, and unique perks such as gourmet lunches, on-site amenities, and a supportive team environment.

In an interview for the Software Engineer II - Backend position, emphasize projects you've worked on involving Node.js and TypeScript. Be sure to discuss specific challenges you faced and how you overcame them, as well as any frameworks you've used in conjunction with these technologies.

When discussing scalability, focus on discussing architectural patterns you've implemented, load balancing strategies, and how you've used database technologies efficiently. Mention any monitoring tools you've utilized to assess performance.

Answering this question effectively requires explaining the use cases for both database types. For SQL, mention structured data and complex queries, while for NoSQL discuss unstructured data and flexibility in schema design. Provide examples of projects where you chose one over the other.

In your response, highlight the importance of constructive feedback and how you ensure best practices are followed. Discuss your past experiences in code reviews and describe how you balance providing constructive criticism with recognition of good work.

Narrate an impactful technical challenge you've faced, detailing the context, your approach to solving it, and the final outcome. Emphasize your problem-solving skills and the technical tools you utilized.

Discuss your method for managing time and priorities, including any specific tools or processes you use. Highlight your experience in agile development environments and the importance of communication with cross-functional teams in prioritizing tasks.

When answering this question, provide a specific example where you had to simplify a complex technical concept. Explain the significance of clear communication in these situations, and how it contributed to project success.

In your answer, list the specific AWS services you have experience with, such as EC2, S3, RDS, or Lambda. Share examples of how you applied these services to achieve project goals and improve system performance.

Discuss best practices for writing clean code, such as adherence to coding standards, thorough documentation, and the importance of refactoring. Provide examples of how following these practices benefited past projects.

Your answer should reflect your alignment with MINT MOBILE’s values. Highlight their employee-centric culture, your excitement about contributing to meaningful projects, and how your skills perfectly fit within their goals as a team.