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Kimley-HornSoftware Engineer
Updated · Reviewed by the Dataford team

Kimley-Horn Software Engineer interview questions & guide 2026

Every question Kimley-Horn interviewers actually ask, the frameworks that win the room, and the language hiring managers respond to.

5 rounds · ≈ 4-6 weeks
1
Initial Screening
2
Technical Conversations
3
Behavioral Conversations
4
Team Lunch
5
Multi-Stage Onsite

1. What is a Software Engineer at Kimley-Horn?

At Kimley-Horn, the Software Engineer role is not merely about writing code; it is about building the sophisticated digital infrastructure that empowers our engineering teams to deliver world-class infrastructure projects. You will work at the intersection of software development and complex engineering, creating tools that enhance productivity for our transportation, energy, and site design teams.

This position is critical to the firm’s competitive advantage. Whether you are developing custom .NET/C# applications, managing enterprise platforms, or automating complex design workflows, your work directly influences the speed and quality of the physical infrastructure projects we deliver across the country. You will be expected to balance technical rigor with a deep understanding of the end-user’s needs—frequently non-software engineers—to ensure your solutions are both functional and intuitive.

Candidates can expect a dynamic, in-office environment that prizes collaboration and proactivity. You will be part of a team that views software as a strategic asset, meaning you will have the opportunity to influence technical direction, mentor junior developers, and see the tangible impact of your code in the real world.

2. Common Interview Questions

The interview process at Kimley-Horn is designed to evaluate your technical competency, your ability to communicate complex ideas, and your alignment with our collaborative culture. While questions vary by team and seniority, you should anticipate a mix of behavioral assessments and practical, experience-based technical discussions.

Behavioral & Leadership

These questions assess your soft skills, your ability to manage competing priorities, and how you function within our team-oriented structure.

  • Describe a time you had to overcome adversity in the workplace.
  • How do you handle competing deadlines?
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03 · Question bank

The questions most likely to come up

Sorted by relevance to this company
Reverse a Singly Linked ListMedium
Problem Given the head of a singly linked list, reverse the list, and return the new head node. The linked list is defined as follows: python class ListNo...
RecursionStackDynamic Programming
Optimizing Existing Algorithms for PerformanceMedium
Explain how to optimize a slow algorithm by analyzing complexity, bottlenecks, and better data structures or techniques.
Hash TablesArraysGreedy
Recently asked
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3. Getting Ready for Your Interviews

Preparation for a Software Engineer role at Kimley-Horn should be two-fold: articulating your technical journey and demonstrating your ability to thrive in a highly collaborative, professional services environment.

Role-Related Knowledge – We evaluate your proficiency with the specific tech stack listed in our job descriptions, such as .NET/C#, SQL Server, or Microsoft 365 administration. Be prepared to explain not just how you use these tools, but why you chose them to solve a specific problem in your past projects.

Problem-Solving Ability – We look for engineers who can break down complex, ambiguous requests into actionable technical requirements. Focus your answers on your process: how you gather requirements, how you weigh trade-offs, and how you ensure your solution meets the end-user’s needs.

Culture Fit & Values – Kimley-Horn is built on a foundation of people and relationships. Your interviewers are assessing whether you can communicate clearly with non-technical stakeholders and whether you possess the proactive, "team-first" attitude that defines our firm.

4. Interview Process Overview

The Kimley-Horn interview process is structured to be thorough, providing you with ample opportunity to meet the team you would be joining. You can expect a consistent flow that begins with an initial screening and progresses toward more in-depth technical and behavioral conversations. We value a "get to know you" approach, often incorporating multiple team members or even informal settings like a team lunch to gauge interpersonal fit.

The pace is generally quick, and we emphasize transparency throughout the stages. You will likely meet with a range of professionals, from peers to senior management, reflecting our flat, collaborative organizational structure.

06 · The loop

The interview process, end to end

≈ 4-6 weeks · 5 rounds
1
Initial Screening

Recruiter-led phone screen to assess candidate's background and fit for the role.

2
Technical Conversations

In-depth technical discussions to evaluate the candidate's technical expertise.

3
Behavioral Conversations

Behavioral interviews to assess interpersonal fit and team dynamics.

4
Team Lunch

Informal setting to gauge interpersonal fit with potential team members.

5
Multi-Stage Onsite

A comprehensive 'super day' involving multiple interviews with various team members.

The timeline above illustrates a standard progression from a recruiter-led phone screen to a multi-stage onsite or virtual "super day." You should interpret this as a marathon, not a sprint; use the early stages to ask questions about team dynamics and the later stages to demonstrate your deep technical expertise.

5. Deep Dive into Evaluation Areas

Technical Competency & Architecture

We assess your ability to design and maintain robust, scalable software. Strong performance here involves demonstrating a deep understanding of your chosen stack and a commitment to code quality.

  • Development Standards – Your approach to code reviews, documentation, and maintainability.
  • Problem Resolution – How you debug issues and apply fixes in a production environment.
  • Architecture – Your ability to own the technical direction of a project from inception to delivery.

Behavioral & Interpersonal Fit

As a firm that relies on internal and external partnerships, your ability to communicate is as important as your technical skill.

  • Collaboration – How you work with team members across different disciplines.
  • Leadership – Your experience mentoring others or managing team workloads.
  • Adaptability – Your willingness to learn new technologies and support the broader goals of the company.
08 · Topic breakdown

What they actually test for

Topic distribution
All topics
Communication (project communication)Heat transferFluid mechanics / fluidsBehavioral interview preparation (workplace adversity)Transformers (power/electrical devices)

6. Key Responsibilities

As a Software Engineer at Kimley-Horn, you will serve as a bridge between technical software capabilities and the practical needs of engineering teams. Your primary responsibility is to own the development and maintenance of custom software solutions, often using .NET/C#, to enhance efficiency in fields like transportation and site design.

You will collaborate daily with business partners to define project requirements, ensuring that your software solves real-world pain points. Beyond coding, you will be expected to conduct code reviews, establish standards, and mentor junior developers. Your role is to drive technical excellence while balancing the immediate needs of your team with the long-term maintainability of our digital infrastructure.

7. Role Requirements & Qualifications

We seek candidates who are not just proficient coders, but who have a genuine passion for applying technology to solve complex engineering problems.

  • Must-have skills:

    • Bachelor’s degree in Computer Science, Software Engineering, or a related field.
    • Proficiency in .NET/C# and experience with databases (e.g., SQL Server).
    • Strong analytical, communication, and leadership skills.
    • Ability to work in an in-office environment.
  • Nice-to-have skills:

    • Knowledge of civil engineering software like AutoCAD, Civil 3D, or Revit.
    • Experience with Azure DevOps, Git, and modern web technologies like Blazor or TypeScript.
    • Experience in an enterprise environment with 500+ users.

8. Frequently Asked Questions

Q: How long does the entire interview process take? A: While it can vary based on office and team, many candidates complete the process within 2–4 weeks from the initial screening to an offer.

Q: Is there a coding test? A: We focus more on your past experience and your ability to solve problems than on whiteboard algorithm tests. Be prepared to talk through the architecture of a past project in detail.

Q: What is the culture like for engineers? A: We pride ourselves on being a collaborative, "people-first" firm. Engineers are expected to be proactive and take ownership of their work, but you will find a supportive environment where mentorship is prioritized.

Q: Is the role remote? A: Most of our software engineering roles are in-office, as we find that face-to-face collaboration is central to our ability to solve complex problems effectively.

9. Other General Tips

  • Do your research: Understand the variety of engineering sectors we serve. Knowing how our work impacts the built environment shows you are serious about the firm.
  • Prepare your stories: Use the STAR (Situation, Task, Action, Result) method to answer behavioral questions. Focus on the result and what you specifically contributed.
  • Bring questions: We view the interview as a two-way conversation. Prepare thoughtful questions about the team’s current projects, our development lifecycle, or how we handle technical debt.
  • Be authentic: We value transparency. If you don't know a specific technology, show your willingness and aptitude to learn it quickly.

10. Summary & Next Steps

The Software Engineer role at Kimley-Horn offers a unique opportunity to build high-impact software within a company that is consistently recognized as one of the best places to work. By focusing on your technical proficiency, your ability to communicate across disciplines, and your alignment with our collaborative culture, you will be well-positioned to succeed.

We encourage you to use the information provided in this guide to structure your preparation. For additional interview insights, practice questions, and specific preparation resources, you can explore Dataford. We are excited about the potential you bring to our team and look forward to learning more about your background during the interview process.

14 · Compensation

What this role pays

4 reports
USUSD
Estimated total compLow confidence · 4 data points
$0k-$0k
Median $142k / year
Base salary · 100%Stock (RSU) · 0%Cash bonus · 0%
25thEntry / smaller markets
$99k
50thTypical offer
$142k
90thTop performers / major metros
$185k
Breakdown by component
Base salary
100% of total
$103k$178k
$140k
median
Stock (RSU)
0% of total
$0$0
$0
median
Cash bonus
0% of total
$0$0
$0
median
Aggregated from 4 self-reported salaries via Glassdoor. Estimates only. Verify against your offer.

The compensation data provided above reflects the competitive ranges for our engineering roles, which include base salary, performance-based bonuses, and profit-sharing contributions. When evaluating your offer, consider the full scope of our benefits package, including our exceptional retirement plan and professional development resources.

17 · FAQ

Kimley-Horn Software Engineer interview FAQ

Answered from real candidate and compensation data
How many rounds is the Kimley-Horn Software Engineer interview process?
Candidates report 5 stages: Initial Screening, Technical Conversations, Behavioral Conversations, Team Lunch, and Multi-Stage Onsite. The interview process section above breaks down what each stage covers.
How much does a Software Engineer at Kimley-Horn make?
Reported compensation for Software Engineer roles at Kimley-Horn ranges from roughly $103k base to $185k total per year, varying by level, team, and location.
What topics come up in the Kimley-Horn Software Engineer interview?
Kimley-Horn Software Engineer interviews most often cover Communication (project communication), Heat transfer, Fluid mechanics / fluids, Behavioral interview preparation (workplace adversity), and Transformers (power/electrical devices), based on topics extracted from real candidate reports.
What questions does Kimley-Horn ask Software Engineer candidates?
Recent candidates report questions like "Reverse a Singly Linked List" and "Optimizing Existing Algorithms for Performance". The question bank above tracks 20 questions for this role, ranked by how often they come up in Kimley-Horn interviews.