How long does the REPS interview process take?

Most candidates spend between 4 and 8 weeks from recruiter screen to offer. The onsite loop itself runs in a single day or is split across two half-days, with debrief and offer typically within 5 business days after.

How should I prepare specifically for REPS?

Focus on three things: (1) the company DNA shown above — what they actually grade for, (2) the rounds in your loop, especially the round most candidates underestimate, and (3) drilling on the question types in this guide using a structured framework like CIRCLES or STAR.

Does this apply to engineering or design roles at REPS?

The DNA stays the same — what changes is the round mix. SWE candidates face coding screens instead of Product Sense; designers face portfolio reviews and design exercises. The "what they value" and behavioral signals carry across all functions.

Other roles at REPS:Software Engineer Product Manager Supply Chain Sales

Growth · Software Engineer Interview Guide

How to Pass the REPS Software Engineer Interview in 2026

The REPS DNA (TL;DR)

REPS's hiring for its energy solutions emphasizes an ability to translate complex technical concepts into tangible impact, especially for infrastructure like Power Plants. Interviewers assess candidates' capacity to innovate within established energy frameworks and demonstrate clear, actionable strategic thinking.

The REPS Interview Loop

Your onsite loop will typically consist of 4 rounds.

1
Round 1
Recruiter Screen
Motivation, role fit, logistics.
2
Round 2
Coding Screen
LeetCode-medium algorithmic problems under time pressure.
3
Round 3
System Design
Distributed systems, trade-offs at scale, architecture under constraints.
4
Round 4
Onsite Coding
LeetCode-hard, debugging, code clarity, edge cases.
5
Round 5
Behavioral / Leadership
Past evidence of ownership, influence, resolving conflict.

The Danger Zone: Top Reasons Candidates Fail

Based on our database of REPS interview outcomes, avoid these common traps:

Failing to account for different meter types or locations potentially having different baseline consumptions.
Escalating the conflict unnecessarily.
Focusing only on the negative aspects without highlighting any learning or positive resolution.
Introducing new bugs while refactoring.

Test Yourself: Real REPS Questions

Three real prompts pulled from our database.

Type · Ownership

Tell me about a time you took ownership of a challenging sales situation that didn't initially seem like your responsibility. What did you do, and what was the outcome?

Type · Conflict Resolution

Tell me about a time you disagreed with a colleague or manager regarding a sales strategy or approach. How did you handle the conflict, and what was the resolution?

Type · Algorithm

You are given a dataset of historical solar power generation for various solar farms, along with weather data (cloud cover, temperature, wind speed) for the same locations and times. Develop an algorithm to predict the solar power output for the next 24 hours for a given farm.

+ many more questions, signals, and worked examples

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REPS Interview Question Bank

A sample from our database, grouped by round. Sign up to see the full set.

9 of 19 questions shown

Recruiter Screen

1
Type · Motivation
Why are you interested in a Software Engineer role at REPS, an energy company, specifically?

Coding Screen

2
Type · Algorithm
Given a stream of energy consumption readings from smart meters, design an algorithm to detect anomalous spikes that deviate significantly from the typical pattern for a given hour of the day. Assume readings are timestamped and include a meter ID.
3
Type · Data Structure
You need to store and query historical energy load data for millions of grid nodes. Each query specifies a time range and a geographical region. Design a data structure that optimizes for fast range queries within specific spatial boundaries.
+ 1 more questions in this round (sign up to unlock)

System Design

4
Type · System Design
Design a system to monitor and predict potential grid failures across REPS's service area. The system should ingest real-time sensor data (voltage, current, temperature), historical failure data, and weather forecasts to identify high-risk areas and components.
5
Type · System Design
Design an API for managing smart home energy devices (thermostats, smart plugs, EV chargers) that integrates with REPS's grid management platform. The API should support device control, status reporting, and potentially demand-response commands.
+ 1 more questions in this round (sign up to unlock)

Onsite Coding

6
Type · Algorithm
Implement a function that simulates the dispatch of repair crews to outages. Given a list of outage locations (coordinates), severity levels, and estimated repair times, and a fleet of repair vehicles with their current locations and capacities, assign crews to outages to minimize the total time until all critical outages are resolved. Assume travel time is proportional to distance.
7
Type · Debugging
A service that aggregates energy prices from various suppliers is intermittently failing to update prices for a specific region. The logs show occasional 'timeout' errors when querying a particular supplier's API. Debug this issue and propose a solution.
+ 2 more questions in this round (sign up to unlock)

Behavioral / Leadership

8
Type · Conflict Resolution
Tell me about a time you had a significant disagreement with an engineer or designer about a product decision. How did you handle it, and what was the outcome?
9
Type · Behavioral
Tell me about a time you had to work with a difficult stakeholder or team member. How did you approach the situation, and what was the outcome?
+ 6 more questions in this round (sign up to unlock)