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Full Time Software Engineer Startup Jobs in Illinois

Senior SDET / Chicago / Python

Chicago, IL · On-site

$113K - $147K/yr

A rapidly growing financial technology organization in downtown Chicago is seeking a full-time Software Development Engineer in Test to support next-generation trading, market data, analytics, and ...

Embedded Software Engineer

IL

$135K - $178K/yr

Objective of role: The Embedded Software Engineer is responsible for the design, development ... to startup behavior, communication failures, timing issues, memory, and interaction between ...

Software Engineer

Chicago, IL · On-site

$150K - $225K/yr

Rockstar is recruiting for a seed-stage tech startup that is building the modern operating system ... The team is seeking an early engineer to join them on the ground floor as they scale their product ...

Virginia Civis is hiring a Software Engineer (Contract) to build and ship high-quality software ... The opportunity to be part of a growing tech startup focused on solving interesting and meaningful ...

Virginia Civis is hiring a Software Engineer (Contract) to build and ship high-quality software ... The opportunity to be part of a growing tech startup focused on solving interesting and meaningful ...

Virginia Civis is hiring a Software Engineer (Contract) to build and ship high-quality software ... The opportunity to be part of a growing tech startup focused on solving interesting and meaningful ...

Blueprint is an early-stage, venture-backed startup based in Chicago focused on tracking and treating mental illness through innovative technology. They are seeking a Fullstack Software Engineer to ...

Software Engineers for Chicago, IL location. Responsible for the design and development of new ... full-time basis. No recruiters please. Any applicant who is interested in this position may apply ...

Full Stack Software Engineer

Chicago, IL · On-site

$125K - $145K/yr

Full Stack Software Engineer RCM Platform Are you ready to join a cutting-edge healthcare startup dedicated to revolutionizing the industry through innovative technologies? Our client, National ...

Software Engineer

Chicago, IL · On-site

$153K - $160K/yr

Software Engineers for Chicago, IL location. Responsible for the design and development of new ... full-time basis. No recruiters please. Any applicant who is interested in this position may apply ...

Full Stack Software Engineer

Chicago, IL · Remote

$125K - $145K/yr

Full Stack Software Engineer RCM Platform Are you ready to join a cutting-edge healthcare startup dedicated to revolutionizing the industry through innovative technologies? Our client, National ...

Full Stack Software Engineer

Chicago, IL · Remote

$125K - $145K/yr

Full Stack Software Engineer RCM Platform Are you ready to join a cutting-edge healthcare startup dedicated to revolutionizing the industry through innovative technologies? Our client, National ...

... PLC (Programmable Logic Controller) frameworks * Strong proficiency in Microsoft SQL Server ... We are a global industrial technology innovator with a startup spirit. Our forward-looking ...

Our consultants are full-time employees who move with us from one client project to the next. To ... The Software Engineer is responsible for architecture, design and development of software to ...

Our consultants are full-time employees who move with us from one client project to the next. To ... The Software Engineer is responsible for architecture, design and development of software to ...

Senior Software Engineer

Chicago, IL · On-site

$126K - $166K/yr

We are looking for a Senior Software Engineer to join Carefeed's engineering team. We're a ... Join a fast-growing startup making a real impact in the lives of senior care providers and their ...

Senior Software Engineer

Chicago, IL · On-site

$126K - $166K/yr

We are looking for a Senior Software Engineer to join Carefeed's engineering team. We're a ... Join a fast-growing startup making a real impact in the lives of senior care providers and their ...

HelloJoy is an early-stage, venture-backed startup based in Chicago focused on innovating mental health care through technology. The Lead Fullstack Software Engineer will play a crucial role in ...

Showing results 21-40

Full Time Software Engineer Startup information

What does a full time software engineer do at a startup?

A Full Time Software Engineer at a startup is responsible for designing, coding, testing, and maintaining software applications or systems that are central to the company’s product or service. In a startup environment, engineers often work on a wide range of tasks, from building new features and fixing bugs to collaborating on system architecture and deployment. They typically work closely with founders, designers, and other team members, adapting quickly to changing requirements and helping the company scale. The fast-paced and dynamic nature of startups often means engineers have significant ownership and impact on the final product.

What skills and qualifications are needed to thrive as a full time software engineer at a startup?

To thrive as a Full Time Software Engineer at a startup, you need strong programming skills, problem-solving abilities, and a degree in computer science or related field. Familiarity with modern development frameworks, cloud platforms, version control systems like Git, and agile methodologies is typically required. Adaptability, proactive communication, and a collaborative mindset help you excel in a fast-paced, evolving environment. These skills are crucial for quickly building, iterating, and scaling products while contributing effectively to a small, dynamic team.

What unique challenges might a full time software engineer face when working at a startup compared to a larger company?

As a Full Time Software Engineer at a startup, you may encounter rapidly changing priorities and a fast-paced environment where flexibility is key. Unlike larger companies with specialized teams, you’ll likely wear multiple hats, contributing to various parts of the tech stack and sometimes assisting with non-coding tasks. This dynamic can be both challenging and rewarding, offering opportunities to have a direct impact on the product and company growth. Close collaboration with founders and cross-functional teams is typical, fostering a culture of innovation and learning.

What is the difference between Full Time Software Engineer Startup vs Full Time Software Engineer Corporate?

AspectFull Time Software Engineer StartupFull Time Software Engineer Corporate
Work EnvironmentFast-paced, dynamic, small teamsStructured, larger teams, established processes
ResponsibilitiesBroader scope, wearing multiple hatsSpecialized, focused on specific areas
Career GrowthRapid learning, potential for quick advancementStructured career paths, steady progression
Compensation & BenefitsVariable, often equity-basedStable salary, comprehensive benefits

In summary, Full Time Software Engineer roles at startups offer a dynamic environment with broader responsibilities and potential for rapid growth, often with equity options. Corporate roles tend to provide more structure, specialized tasks, and stable compensation, making them suitable for those seeking stability and clear career progression.

What are the most commonly searched types of Software Engineer Startup jobs in Illinois?

The most popular types of Software Engineer Startup jobs in Illinois are:

What are popular job titles related to Full Time Software Engineer Startup jobs in Illinois?

For Full Time Software Engineer Startup jobs in Illinois, the most frequently searched job titles are:

What job categories do people searching Full Time Software Engineer Startup jobs in Illinois look for?

The top searched job categories for Full Time Software Engineer Startup jobs in Illinois are:

What cities in Illinois are hiring for Full Time Software Engineer Startup jobs?

Cities in Illinois with the most Full Time Software Engineer Startup job openings:

Infographic showing various Full Time Software Engineer Startup job openings in Illinois as of September 2026, with employment types broken down into 100% Full Time. Highlights an 100% In-person job distribution.

Senior SDET / Chicago / Python

Chicago, IL • On-site

Motion Recruitment
Recruiting and Staffing Services • 501 - 1,000 employees

$113K - $147K/yr

Full-time

Medical, Dental, Vision, Retirement, PTO

Re-posted 11 days ago


Job description

A rapidly growing financial technology organization in downtown Chicago is seeking a full-time Software Development Engineer in Test to support next-generation trading, market data, analytics, and risk management platforms. This position offers the opportunity to work with modern technologies including Python, C#, Playwright, Selenium, SQL, AI/ML tooling, and highly scalable real-time systems operating within the capital markets industry.
This opportunity is ideal for someone who enjoys solving complex technical challenges while working at the intersection of software engineering, quality assurance, trading technology, and machine learning. The organization operates with a highly collaborative culture where testers work closely with developers, quantitative teams, and business stakeholders. Candidates looking to expand their expertise in automated testing, derivatives markets, and AI-driven applications will find substantial growth potential. Required Skills & Experience
  • 3+ years of QA Engineering, SDET, or Automation Engineering experience
  • Python automation experience
  • Experience with Playwright, Selenium, or comparable automation frameworks
  • Strong SQL scripting and database validation skills
  • Knowledge of FIX Protocol messaging
  • Experience within trading, financial services, capital markets, exchanges, or fintech
  • Understanding of options, derivatives, futures, or trading workflows
  • Experience performing both manual and automated testing
Desired Skills & Experience
  • Machine Learning or AI testing exposure
  • Experience with LLMs, Claude, Copilot, or agentic coding tools
  • Knowledge of REST API testing and Rest Assured
  • C# development experience
  • Experience supporting OMS, EMS, market data, or execution platforms
  • Prop trading or exchange technology background
  • Performance and load testing experience
  • CI/CD pipeline testing exposure
What You Will Be Doing
  • Design and maintain automated test frameworks
  • Execute manual and exploratory testing activities
  • Validate trading workflows, market data integrations, and platform functionality
  • Test APIs, databases, and distributed applications
  • Support AI/ML testing initiatives and model validation efforts
  • Investigate production issues and create regression coverage
  • Collaborate with software engineers, traders, and quantitative teams
Tech Breakdown
  • 40% Test Automation Development
  • 25% Trading Platform Validation
  • 20% API and Database Testing
  • 15% AI/ML Testing Initiatives
Daily Responsibilities
  • 70% Hands On
  • 30% Team Collaboration
The Offer
  • Bonus eligible
You will receive the following benefits:
  • Medical, Dental, and Vision Insurance
  • 401(k) with company contribution
  • Paid Time Off
  • Employee wellness programs
  • Flexible work environment
  • Stock Options
  • Professional development opportunities
Applicants must be currently authorized to work in the US on a full-time basis now and in the future.