Coding fluency
Implement an LRU cache. Explain your data structures, test capacity one, and walk through an eviction.
What a strong answer demonstrates
Correctness, edge cases, and time / space complexity.
Prepare for Benchling with a focused mix of coding, design, and communication. Start with your job description and confirm the interview loop with your recruiter.
6 Practice picks
2 Interview reports
5 Levels mapped
01 / MAKE YOUR NEXT SESSION COUNT
Your preparation, made concrete.
System design
Design a notification service. Clarify delivery guarantees, model the data, then handle retries and duplicate events.
What a strong answer demonstrates
Clear requirements, a working baseline, and explicit trade-offs.
Behavioral storytelling
Describe a technical decision you changed after receiving feedback. Explain your contribution and the outcome.
What a strong answer demonstrates
Specific actions, honest reflection, and measurable impact.
BEFORE YOU PRACTICE
Ask your recruiter.
Get the details that a generic company guide cannot know.
- Which team and level is this opening for, and what does success look like?
- What rounds, durations, and evaluation criteria should I prepare for?
- Which languages, tools, and AI assistance are permitted?
- Will design focus on frontend, backend, infrastructure, or another specialty?
- Are there accommodations or preparation materials I should request?
Benchling practice problems
Company-linked challenges and related lessons from our library. Not a prediction of your interview.
Challenge
Difficulty 6/10
Length of String Compression
Challenge
Difficulty 8/10
Longest Increasing Subsequence
Challenge
Difficulty 6/10
Closures and Dependency Injection
Challenge
Difficulty 8/10
Dutch National Flag Problem
Challenge
Difficulty 6/10
Delete Node From End
Challenge
Difficulty 4/10
Find Missing Number in Array
Real interview experiences
2 reports from candidates who interviewed at Benchling.
What people at Benchling say
Reviews originally posted on Glassdoor.
Employee satisfaction is a company priority. And the introduction of company mental health during the pandemic really spoke to that.
The biggest pro for Benchling is the quality of the people that work here. Benchling tries to optimize for people skills as well as technical skills when hiring engineers, and it really shows in day-to-day interactions with the team. I'm consistently learning from people through technical designs, leadership qualities, and empathy to users and coworkers alike.
Huge impact: much of lab biology is still done on paper or in legacy software, and bringing them onto a modern system speeds up their work by orders of magnitude. Our customers are everyone from major pharma companies to small biotech startups to academic labs and we have the potential to really revolutionize the space.
people hold themselves to a high standard, but there is a culture of not pointing fingers/blaming
Company sets a high bar and has some of the best people I've worked with. The work is interesting and mission is exciting