Senior Full Stack Developer (Angular + Python)

Job Title: Senior Full Stack Developer (Angular + Python)

Location: Chicago, IL

Type: Contract

Compensation: Open

Work Model: Onsite – onsite/Remote

Hours: 40.0

Responsibilities

• Design and implement frontend components using Angular, including component architecture, modules, lazy loading, standalone components, and reusable design systems.

• Manage state with NgRx or Angular Signals, employing reactive patterns with RxJS, and designing service-layer interactions.

• Optimize performance through change detection tuning, AOT compilation, and testing with Jasmine, Jest, or Cypress, ensuring accessibility standards are met (WCAG).

• Develop backend APIs with Python FastAPI, including RESTful endpoint creation, Pydantic models, dependency injection, and OpenAPI documentation.

• Implement async/await patterns, background tasks, caching, and rate limiting for performance enhancements.

• Manage security and authentication using JWT/OAuth2, middleware, CORS, and coordinate input validation following OWASP guidelines.

• Design and model PostgreSQL schemas, implement normalization, indexing strategies, migrations with Alembic, and optimize queries using EXPLAIN ANALYZE, CTEs, window functions.

• Utilize SQLAlchemy for ORM and transaction management, ensuring transaction isolation and connection pooling.

• Work with AWS cloud services, including serverless architecture, Lambda functions, SNS/SQS messaging, data pipelines with AWS Glue ETL, S3, and IAM security.

• Participate in sprint planning, issue estimation, risk escalation, stakeholder communication, and collaborate across product, QA, and DevOps teams.

Requirements

• Proven experience with Angular 15+ including NgRx, RxJS, Angular Signals, and TypeScript.

• Strong backend development skills with Python 3.10+, FastAPI, Pydantic, SQLAlchemy, and API design principles.

• Hands-on experience with PostgreSQL, including schema design, indexing, query optimization, and migrations using Alembic.

• Knowledge of AWS cloud services such as Lambda, Glue, SNS, SQS, S3, and CloudWatch.

• Experience implementing security and authentication with JWT and OAuth2.

• Familiarity with performance tuning, accessibility standards, and testing frameworks like Jasmine, Jest, and Cypress.

• Excellent collaboration, mentoring, and communication skills in a team environment.

• Bachelor’s degree in Computer Science, Information Technology, or related field preferred.

System One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan.

System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law.

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Ref: #404-IT Pittsburgh

System One, and its subsidiaries including Joulé, ALTA IT Services, CM Access, TPGS, and MOUNTAIN, LTD., are leaders in delivering workforce solutions and integrated services across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible full-time employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan.

System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law.