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Senior Fastapi Developer Jobs in Illinois (NOW HIRING)

Infleqtion

Quantum Software Engineer

Chicago, IL · On-site

This role is open to both entry-level and senior-level candidates. Job Responsibilities The duties ... Experience with backend development with tools such as FastAPI for web frameworks and PostgreSQL ...

Infleqtion

Quantum Software Engineer

Chicago, IL · On-site

This role is open to both entry-level and senior-level candidates. Job Responsibilities The duties ... Experience with backend development with tools such as FastAPI for web frameworks and PostgreSQL ...

JLL

AI Dev Lead

Chicago, IL

$60.75 - $79.50/hr

Responsibilities * 4-6 years' hands-on experience working as Sr AI/ML Developer with at least three ... Python, FastAPI, Flask * LangChain, LlamaIndex, Transformers library * OpenAI API, Azure OpenAI ...

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What are the key skills and qualifications needed to thrive as a Senior FastAPI Developer, and why are they important?

To thrive as a Senior FastAPI Developer, you need deep expertise in Python, RESTful API design, and experience building scalable web backends, typically supported by a degree in computer science or related field. Familiarity with FastAPI, Docker, cloud platforms (such as AWS or Azure), and CI/CD tools is highly valued, along with proficiency in testing frameworks. Strong problem-solving, leadership, and communication skills help you collaborate effectively with cross-functional teams and mentor junior developers. These skills enable the delivery of robust, efficient, and maintainable APIs that support business goals and high user demands.

What are some common challenges faced by Senior FastAPI Developers when scaling applications, and how can these be addressed?

Senior FastAPI Developers often encounter challenges related to managing high concurrency, optimizing API performance, and ensuring robust security as applications scale. To address these, it’s important to implement asynchronous programming practices, leverage efficient database queries, and utilize API gateways for better traffic management. Collaboration with DevOps and QA teams is also essential to automate deployments and monitor system health, ensuring smooth scaling and reliable user experiences.

What does a Senior FastAPI Developer do?

A Senior FastAPI Developer designs, develops, and maintains backend web applications using the FastAPI framework in Python. They are responsible for building scalable APIs, optimizing performance, ensuring security best practices, and integrating with databases and external services. Senior developers also mentor junior team members, contribute to architecture decisions, and collaborate closely with front-end engineers and stakeholders to deliver robust software solutions.
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Senior Fastapi Developer jobs near you
Infographic showing various Senior Fastapi Developer job openings in Illinois as of May 2026, with employment types broken down into 77% Full Time, 18% Part Time, and 5% Contract. Highlights an 54% Physical, and 46% Remote job distribution.

Quantum Software Engineer

Infleqtion

Chicago, IL • On-site

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 22 days ago

Job description

Position Summary
This Quantum Software Engineer role will join the Compiler Team within Infleqtion's Quantum Software organization. This role will be responsible for designing, building, and maintaining quantum compilation software alongside considerable involvement in co-design efforts that span the full quantum stack, including applications, algorithms, hardware and control. This role combines hands-on coding, code review, and system design with R&D. Ideal candidates have a strong software development background and familiarity with quantum computation.
This role is open to both entry-level and senior-level candidates.
Job Responsibilities
The duties and responsibilities outlined below include essential functions of the role. Depending on business needs, this role may perform a combination of some or all of the following duties. Duties, responsibilities, and activities may change, or new ones may be assigned.
  • Conduct R&D toward cutting-edge advances in quantum technology with a focus on quantum compilation, similar to work described in https://arxiv.org/abs/2309.05157 and https://arxiv.org/abs/2509.13247
  • Deploy software optimizations to our cloud platform Superstaq using industry-grade software engineering procedures including documentation, linting, testing, and type-checking
  • Interface with customers of Superstaq to understand their needs and support them in a timely fashion
  • Contribute to development of government and commercial proposals and execution on global programs
  • Collaborate with experimental physicists and software engineers to bridge the gap between theoretical concepts and practical implementation
  • Engage with the broader scientific community by publishing research findings in scientific journals and presenting at conferences
  • Stay up to date with the latest developments in quantum computer architecture, quantum compilation and related fields
  • Provide guidance and support to other team members, fostering a collaborative research environment

Requirements
  • Bachelor's degree in computer science, engineering, physics or a directly related field
  • High proficiency in programming, with fluency in Python preferable. Proficiency in alternative languages (e.g. C/C++ or Julia) with the ability to rapidly upskill in Python
  • Experience with open-source quantum software frameworks such as Cirq or Qiskit; Ideal candidates will have experience not only using these libraries but also modifying them
  • Demonstrated ability to work and communicate with all levels of an organization; Professional-level communication skills, including verbal, written, and presentation skills
  • Demonstrated ability to work comfortably in a highly collaborative, cross-functional, team-oriented, and matrixed environment
  • Desire and demonstrated ability to thrive and produce results in a fluid, dynamic, and fast-paced environment
  • Demonstrated ability to learn new and complex topics quickly
  • Resourceful problem-solver who collaboratively identifies effective paths forward with demonstrated expertise in executing productization efforts
  • Passion for solving complex problems and challenges in a highly technical and scientific environment
  • Ability to be in the office any three days per week
  • Ability to travel domestically and (potentially) internationally up to 10%

Preferred Qualifications
  • PhD in quantum computation, physics, computer science, or a directly related field
  • Familiarity with concepts in quantum computing such as error correction / fault tolerance, native gate decomposition, qubit mapping and routing, and variational quantum algorithms
  • Experience with advanced open-source quantum software frameworks such as Stim
  • Familiarity with best practices of professional software engineering such as coverage, integration tests, type checking, unit tests, and version control
  • Experience with backend development with tools such as FastAPI for web frameworks and PostgreSQL/SQLAlchemy for databases
  • Experience with cloud development, especially on GCP and AWS
  • Familiarity with CI/CD, automated actions, issue tracking, version control, and other features on GitHub
  • Familiarity with security core best-practices such as access control, encryption at rest, key rotation, and logging
  • Exposure to or interest in front-end / GUI development, e.g., HTML/CSS, React, PyQt.

Our team will begin reviewing applications on January 20, 2026 and will continue until the position is filled.
Benefits
Benefits
  • Salary range: 120,000 to 150,000 USD/year
  • 100% company-paid medical, dental, vision, short/long-term disability
  • Employer-funded Health Savings Account
  • Unlimited PTO
  • 401(k) match
  • Company-paid Life and AD&D Insurance
  • Flexible Savings Account
  • Paid FMLA, Maternity/Paternity Leave
  • Employee Assistance Program
  • Student Loan Repayment
  • Equity Program

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