Flo (Singapore) Software Engineer interview questions & guide 2026

The following questions are representative of the patterns reported by candidates during our interview process. While specific inquiries may shift depending on the team or current project needs, these categories reflect our core focus on technical proficiency, practical problem-solving, and professional motivation.

Technical & Domain Knowledge

These questions test your ability to handle data-heavy tasks and your proficiency in the languages and tools required for our daily operations.

• Write a script to process electricity data and generate relevant outputs.
• Develop a proof-of-concept energy meter loader.

Preparation for Flo (Singapore) requires a focus on demonstrating your ability to deliver production-grade results independently. Because our process often involves a take-home assessment, your ability to document your work and explain your technical decisions is just as important as the code you write.

Technical Proficiency – We look for clean, modular, and efficient code. You should be prepared to explain your choice of data structures and algorithms in the context of real-world constraints rather than purely academic exercises.

Practical Problem-Solving – Our assessments are often open-ended. You will be evaluated on how you structure your solution, handle edge cases, and justify your design choices. Be ready to discuss the trade-offs you made during your implementation.

Communication & Documentation – Since much of your assessment will be reviewed asynchronously, your write-up is a critical component of your submission. Clearly articulating your logic and justifying your architectural decisions is essential for moving to the next stage.

Professional Alignment – We want to understand your motivation for joining Flo (Singapore). Be prepared to link your past achievements to the challenges we face and demonstrate how your experience makes you a strong fit for our specific technical environment.

The interview process at Flo (Singapore) is designed to assess your practical engineering skills and cultural alignment. Generally, the process begins with an initial screening call with a recruiter or hiring manager, where we discuss your background, expectations, and interest in the company. Following this, qualified candidates are invited to complete a technical take-home assignment.

Successful completion of the technical assessment typically leads to one or more rounds of in-person or virtual technical interviews, where you will discuss your code and complete further technical challenges. The final stages usually involve discussions with the hiring manager to evaluate team fit. We value candidates who can work independently, demonstrate high-quality output, and communicate their thought processes clearly throughout each stage.

This visual timeline illustrates the typical progression from initial contact through the technical assessment and final interview rounds. Candidates should interpret this as a guide for managing their time, particularly given the importance of the technical take-home assignment, which may require a full day of focused effort to reach a production-ready standard.

Technical Assessment

This is the most significant stage of our evaluation. We look for code that is not just functional but also maintainable and well-structured.

Be ready to go over:

• Code Quality – Adherence to clean coding principles and proper project structure.
• Data Handling – Proficiency in reading, processing, and formatting data from various sources.

As a Software Engineer at Flo (Singapore), your primary responsibility is the development and maintenance of data-driven systems. You will often work on tasks that require high precision, such as parsing energy meter data or building tools that facilitate data ingestion and transformation.

You will be expected to take ownership of your tasks from conception to completion. This includes writing the code, handling the necessary unit testing, and providing clear documentation that allows other team members to understand and build upon your work. Collaboration is key; you will interact with product managers and other engineers to ensure that the solutions you build align with our broader technical roadmap and operational requirements.

We seek candidates who are technically self-sufficient and capable of delivering high-quality work with minimal supervision.

• Must-have skills:

  • Proficiency in one or more backend programming languages.
  • Experience with data processing and manipulation.
  • Ability to write clean, testable, and production-ready code.
  • Strong written communication skills to document technical designs.

• Nice-to-have skills:

  • Prior experience in energy or utility-related software projects.
  • Knowledge of database design and SQL optimization.
  • Familiarity with common version control workflows, particularly in Git.

Q: How much time should I set aside for the take-home assessment? A: Candidates typically spend between half a day to a full day to complete the assessment to a production-ready standard. Ensure you allocate enough time to not just write the code, but also to finalize your documentation.

Q: What differentiates successful candidates? A: Successful candidates distinguish themselves by providing clear, well-documented code that addresses the problem statement directly while also considering scalability and robustness.

Q: What is the company culture like? A: We value individuals who are proactive, communicate clearly, and take pride in the quality of their engineering work. Our team is focused on practical, real-world outcomes.

Q: What is the typical timeline for the process? A: While timelines can vary, you should expect roughly one week between major stages of the process.

• Prioritize the write-up: Do not treat the documentation as an afterthought. Your ability to explain why you made certain technical choices is often as important as the code itself.
• Be ready for practical questions: We focus on real-world skills rather than abstract algorithmic puzzles. Use your past project examples to illustrate your problem-solving process.
• Clarify requirements early: If you have questions about the take-home assignment, do not hesitate to reach out for clarification before diving deep into the implementation.

The Software Engineer role at Flo (Singapore) offers a unique opportunity to work on impactful data systems that drive our business forward. By focusing on your ability to deliver clean, documented, and production-ready code, you will be well-positioned to succeed in our technical assessment and subsequent interviews.

We encourage you to use this guide to structure your preparation. For additional interview insights, practice questions, and comprehensive preparation resources, you can explore the information available on Dataford. We are looking for engineers who are ready to take ownership of their work and contribute to our team's success, and we look forward to seeing your application.

The provided salary data offers insight into the expected compensation ranges, which are typically influenced by your specific level of experience, technical expertise, and the seniority of the role. Candidates should interpret these figures as a market-standard baseline and be prepared to discuss their specific expectations during the initial screening call.