Dataford
Top 50
Prep plan
Updated weekly · Last refresh Aug 30

Moderna Software Engineer Interview Questions

The questions to prepare for a Moderna Software Engineer interview. Questions from real interview reports rank first. Updated weekly.

50questions
~7htotal time
Track your progressSign up free to work through all 50 questions and resume where you left off.
Start practicing free →
1
SQL & Data ManipulationStart here. 3 questions + 2 drills · ~46 min
SQL With Complex Joins and AggregationsHard
Practice

Combine OptumRx claims, prescriptions, pharmacies, and members to calculate utilization metrics with CTEs and window functions.

JoinsGroup ByAggregationsModerna
SQL Fill-in-the-Blank PracticeMedium

Tests practical SQL knowledge through query completion and database reasoning.

databasesql queriesModerna
Monthly Sales Trends by CategoryMedium
Practice
Practice drill

Aggregate monthly sales by product category and use LAG to calculate month-over-month changes.

InfrastructureToolsData WranglingTotal Wine & MoreInc.Benjamin Moore
Contact Center Agent Performance MetricsHard
Practice
Practice drill

Compute daily agent call KPIs and SLA using joins, aggregations, and window ranking in a contact center model.

ETLAggregationsData ModelingADP
More SQL & Data Manipulation questions with a free account
2
Coding11 questions · ~96 min
Directed Graph Cycle DetectionMedium
Practice

Determine whether a directed graph contains a cycle using DFS or topological sorting.

RecursionGraphsModerna
Low-Level OOP Design With ClassesHard

Tests ability to produce a complete OOP design with clear abstractions and relationships.

abstractionoopFrameworksModerna
More Coding questions with a free account

Sign up to see every question

Create a free account to unlock this list and practice real interview questions.

Get my prep plan
3
Pipelines5 questions · ~44 min
Design API Gateway Pipeline LayerMedium

Design an API gateway layer that applies auth, rate limiting, and routing patterns with strong observability at scale.

InfrastructureAPIsperformanceModerna
REST for Legacy Lab EquipmentMedium

Tests API design judgment for integrating modern services with legacy systems.

InfrastructureAPIsToolsModerna
More Pipelines questions with a free account
4
Behavioral & Leadership28 questions · ~245 min
More Behavioral & Leadership questions with a free account
5
More topics3 questions · ~26 min
Decoupled Frontend-Backend ArchitectureMedium

Tests system design skills for responsive scientific data experiences.

Trade-offsExecutionScope ManagementModerna
Database Design WalkthroughHard

Evaluates your ability to design data models and explain tradeoffs clearly.

database designData ModelingModerna
More questions with a free account
The finish line: interview-readyComplete all 50 questions plus 2 hands-on drills to finish this plan.