Celestar Interview Guide

Based on 3 interview reportsUpdated weekly

Everything we know about interviewing at Celestar: what each round tests and compensation by level.

Data ScientistProject ManagerSecurity EngineerSoftware Engineer

01Skills

What Celestar evaluates

How often each skill shows up across reported interview loops.

Python100%Project Management100%Information Security (General)100%Software Engineering100%Machine Learning (ML)96%Cloud Security96%Program Management96%R93%Cybersecurity Operations93%Deputy Program Management93%SQL90%Security Engineering89%

02Role guides

Interview guides by role

Each guide has the questions Celestar interviewers actually ask, the loop structure, and total compensation by level.

4roles

Data Scientist

What is a Data Scientist at Celestar? A Senior Data Scientist at Celestar plays a pivotal role in bridging the gap between raw data and actionable intelligence for government and defense clients. You are not just building models; you are crafting narrative products that influence high-stakes analytic decisions. Your work...

$40k–$950kView

Project Manager

What is a Project Manager at Celestar? As a Project Manager at Celestar, you serve as the backbone of mission-critical operations. Whether you are supporting USACIC or the SOUTHCOM EDA initiatives, your role is to ensure that complex programs are delivered with precision, efficiency, and strict adherence to government requirements....

$73k–$142kView

Security Engineer

What is a Security Engineer at Celestar? At Celestar, the Security Engineer role is a high-impact position that bridges the gap between advanced analytical intelligence and robust technical infrastructure. You are not merely securing systems; you are enabling the critical mission of USCYBERCOM and other defense partners by ensuring that...

$112k–$161kView

Software Engineer

1. What is a Software Engineer at Celestar? A Software Engineer at Celestar plays a pivotal role in delivering high-impact technical solutions, particularly within the SOUTHCOM EDA (Enterprise Data Analytics) environment. You are not just writing code; you are building the digital infrastructure that enables critical decision-making and operational efficiency...

View guideView

03Compensation

What Celestar pays, by level

Estimated total compensation: base salary plus stock and annual cash bonus.

Median $136k

LevelBaseStockBonus / yrTotal comp

All levels$40k–$950k——$40k–$950k

Ranges blend verified compensation data points · base + stock + annual bonus shown. Estimates only.

04FAQ

Celestar interview FAQ

Answered from real candidate and workplace data, marked up for rich results.

How hard is the Celestar interview?

Candidates most commonly rate Celestar interviews as medium, based on 3 reported interviews.

How much does Celestar pay for data roles?

Reported total comp for data roles at Celestar ranges from roughly $40k to $950k per year, varying by level, team, and location.

What topics does Celestar test in interviews?

Celestar interviews most often cover Python, Project Management, Information Security (General), Software Engineering, and Machine Learning (ML). The exact emphasis depends on the specific role you apply for.

What roles can I prepare for at Celestar?

Dataford has interview guides for 4 roles at Celestar, including Data Scientist, Project Manager, Security Engineer, and Software Engineer.

Where is Celestar headquartered?

Celestar is headquartered in Athens, Greece.