Type · Collaboration
Tell me about a time you had to collaborate with scientists or researchers who had a very different technical background than yours. How did you ensure effective communication and achieve a common goal?
How to Pass the Exscientia Software Engineer Interview in 2026
Growth · Software Engineer Interview Guide
Sign up to see ATSHeadquartered in United KingdomInterview language: English
The Exscientia DNA (TL;DR)
Exscientia's Drug Discovery mission drives evaluation for candidates who can integrate AI/ML with scientific principles to advance drug candidates. Interviewers assess the ability to translate complex computational work into tangible progress in therapeutic areas like Oncology Solid, emphasizing scientific rigor and the potential to accelerate drug development.
Interviews inPython
The Exscientia Interview Loop
Your onsite loop will typically consist of 5 rounds.
- 1
Round 1
Recruiter ScreenMotivation, role fit, logistics. - 2
Round 2
Coding ScreenLeetCode-medium algorithmic problems under time pressure. - 3
Round 3
System DesignDistributed systems, trade-offs at scale, architecture under constraints. - 4
Round 4
Onsite CodingLeetCode-hard problems, reasoning about defects, code clarity, edge cases. - 5
Round 5
Behavioral / LeadershipPast evidence of ownership, influence, resolving conflict.
The Danger Zone: Top Reasons Candidates Fail
Based on our database of Exscientia interview outcomes, avoid these common traps:
- Focusing only on the technical challenges without addressing communication barriers.
- Not handling edge cases like empty datasets, missing efficacy metrics, or profiles with no matching candidates.
- Not providing a specific example or detailing their own actions.
- Lack of consideration for data validation and schema evolution.
Test Yourself: Real Exscientia Questions
Three real prompts pulled from our database.
Type · Algorithm - Hard
Implement a function to find the optimal sequence of chemical reactions to synthesize a target molecule, given a library of possible reactions and starting materials. This is analogous to finding a path in a large, potentially cyclic state space graph.
Type · Algorithmic Problem
You are given a graph representing molecular interactions. Design an algorithm to find the shortest path between two specific molecules, where path length is defined by a weighted sum of interaction strengths. Some interactions might be inhibitory.
+ many more questions, signals, and worked examples
Sign up to unlock the full Exscientia grading rubric
Exscientia Interview Question Bank
A sample from our database, grouped by round. Sign up to see the full set.
8 of 11 questions shown
1
Recruiter Screen
1- 1
Type · Motivation
What interests you about working at Exscientia, and how do you see your skills contributing to our mission of discovering and developing novel medicines?
2
Coding Screen
3- 2
Type · Data Structures & Algorithms
Given a dataset of patient responses to different drug candidates, write a function to identify the top K most effective drug candidates for a specific patient profile, considering various efficacy metrics. Assume the dataset can be very large. - 3
Type · Algorithmic Problem
You are given a graph representing molecular interactions. Design an algorithm to find the shortest path between two specific molecules, where path length is defined by a weighted sum of interaction strengths. Some interactions might be inhibitory. - + 1 more questions in this round (sign up to unlock)
3
System Design
3- 4
Type · API Design
Design an API for a system that predicts the properties of novel molecules based on their chemical structure. Consider how to handle potentially long-running prediction jobs, versioning, and authentication. - 5
Type · Data Pipeline
Design a data pipeline to ingest, process, and store large volumes of high-throughput screening (HTS) data from various lab instruments. The pipeline needs to be fault-tolerant and support near real-time analysis. - + 1 more questions in this round (sign up to unlock)
4
Onsite Coding
1- 6
Type · Algorithm - Hard
Implement a function to find the optimal sequence of chemical reactions to synthesize a target molecule, given a library of possible reactions and starting materials. This is analogous to finding a path in a large, potentially cyclic state space graph.
5
Behavioral / Leadership
3- 7
Type · Collaboration
Tell me about a time you had to collaborate with scientists or researchers who had a very different technical background than yours. How did you ensure effective communication and achieve a common goal? - 8
Type · Technical Challenge
Describe a technically challenging problem you faced in a previous project related to data processing, simulation, or machine learning in a scientific context. What was your approach to solving it, and what was the outcome? - + 1 more questions in this round (sign up to unlock)
Unlock all 11 Exscientia questions, free
No credit card. Every question with its framework, the grading signals interviewers score against, and a worked answer for each.
Interview tracks at Exscientia
How Exscientia's DNA translates across functions. Pick your role.
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Practice Exscientia interviews end-to-end
Exscientia Mock Interview
Run a live mock interview with our AI interviewer using Exscientia-style prompts. Get scored on structure, signal, and answer length - exactly how the real loop grades you.
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STAR Stories for Exscientia Behavioral Rounds
Build a Story Bank of your past wins, mapped to the leadership signals Exscientia interviewers grade on. Reuse them across every behavioral round.
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Exscientia Interview Prep Hub
The frameworks behind every Exscientia round: CIRCLES for product sense, hypothesis-driven debugging for analytical, STAR for behavioral. Learn each one in 10 minutes.
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Interview Frameworks
CIRCLES, STAR, AARRR, RICE, MECE. The exact frameworks that make Exscientia interviewers nod instead of frown. Step-by-step playbooks with the moves and the pitfalls.
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Sample answers
What a strong answer to these Exscientia interview questions shows.
Tell me about a time you had to collaborate with scientists or researchers who had a very different technical background than yours. How did you ensure effective communication and achieve a common goal?
A strong answer shows: Demonstrates empathy and understanding of different perspectives.; Proactive communication strategies to bridge technical gaps.; Focus on achieving shared goals through collaboration.; Ability to translate complex technical concepts..
Implement a function to find the optimal sequence of chemical reactions to synthesize a target molecule, given a library of possible reactions and starting materials. This is analogous to finding a path in a large, potentially cyclic state space graph.
A strong answer shows: Correct modeling of the problem as a graph or state-space search.; Use of dynamic programming or informed search algorithms.; Strategies for handling cycles and pruning the search space.; Clear explanation of complexity and potential optimizations..
Frequently asked questions
How long does the Exscientia 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 Exscientia?
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 Exscientia?
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.
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