Python Engineer (mid level)

Paychex is reimagining how businesses manage their workforce by bringing payroll, HR, benefits, and advisory services together into a single connected HCM platform. As Paychex and Paycor come together, we're combining innovative technology, data-driven insights, AI, and human expertise to help organizations work smarter, support their people, and achieve better business outcomes. This is an exciting time to join our team as we continue to invest in innovation, simplify client experiences, and shape the future of work. At Paychex, you'll have the opportunity to grow your career, make a meaningful impact, and be part of something bigger as One Paychex.

Responsibilities

• Deliver end-to-end backend features with Python on AWS serverless (Lambda, API Gateway, SQS/SNS, EventBridge, Step Functions).

• Participate in designing, building and maintaining clean, well-documented GraphQL APIs that power product experiences across the platform, with attention to performance and security.

• Participate in building scalable, resilient distributed and event-driven services, including integrations with third-party systems, idempotency, retries and failure recovery.

• Participate in designing and optimizing data models and storage (e.g., DynamoDB, PostgreSQL/Aurora, S3), with a focus on data integrity, query performance and cost efficiency.

• Collaborate on AI-powered features and intelligent automation services, with rigor in verifying AI-assisted work.

• Integrate with and improve our fully automated CI/CD pipeline (CircleCI, GitHub Actions), including infrastructure as code (e.g., Terraform, AWS CDK or CloudFormation).

• Contribute to backend standards for security, observability and reliability, and participate in design and code reviews.

Qualifications

• 3+ years of backend development experience, with a focus on Python and AWS serverless.

• Experience designing and building GraphQL and/or REST APIs.

• Experience building and supporting distributed, event-driven systems, including integrations with third-party services and designing for resilience and failure recovery is a plus

• Knowledge of relational and NoSQL databases, data modeling and performance tuning.

• Strong testing and clean-coding mindset (BDD, TDD, SOLID).

• Familiarity with CI/CD using CircleCI and GitHub Actions, infrastructure as code, and observability tools such as Datadog or equivalent.

• Solid testing and verification mindset, with a focus on delivering reliable, high-quality software where accuracy and correctness are critical.

• Understanding of application security best practices (authentication/authorization, IAM, secrets management, data protection).

• Experience contributing to product delivery, including planning, epics and cross-functional collaboration.

• Experience using AI-powered tools.

What's in it for you?

• A flexible work philosophy
• Company paid private health insurance
• Company paid life and disability insurance
• Paid leave for illness, birth parents, non-birth parents, elder caregivers, marriage, adoption of a child and bereavement
• Inclusive and accessible Employee Assistance Program (EAP) to help with everyday challenges
• Christmas and Easter bonuses
• Opportunity for strengthening expertise and skills through Paychex’s learning platform, including lessons in English

Not sure if you meet every requirement?

At Paychex, we know that great talent comes in many forms. If you're passionate about the role but don't check every box, we still encourage you to apply. You might be the right fit - either for this position or another opportunity with us.

Paychex is an equal opportunity employer. We are committed to fostering a respectful and inclusive workplace where all individuals are treated fairly and evaluated based on their qualifications, experience, and merit. We comply with all applicable federal, state, and local laws prohibiting discrimination in employment.

• Deliver end-to-end backend features with Python on AWS serverless (Lambda, API Gateway, SQS/SNS, EventBridge, Step Functions).

• Participate in designing, building and maintaining clean, well-documented GraphQL APIs that power product experiences across the platform, with attention to performance and security.

• Participate in building scalable, resilient distributed and event-driven services, including integrations with third-party systems, idempotency, retries and failure recovery.

• Participate in designing and optimizing data models and storage (e.g., DynamoDB, PostgreSQL/Aurora, S3), with a focus on data integrity, query performance and cost efficiency.

• Collaborate on AI-powered features and intelligent automation services, with rigor in verifying AI-assisted work.

• Integrate with and improve our fully automated CI/CD pipeline (CircleCI, GitHub Actions), including infrastructure as code (e.g., Terraform, AWS CDK or CloudFormation).

• Contribute to backend standards for security, observability and reliability, and participate in design and code reviews.

• 3+ years of backend development experience, with a focus on Python and AWS serverless.

• Experience designing and building GraphQL and/or REST APIs.

• Experience building and supporting distributed, event-driven systems, including integrations with third-party services and designing for resilience and failure recovery is a plus

• Knowledge of relational and NoSQL databases, data modeling and performance tuning.

• Strong testing and clean-coding mindset (BDD, TDD, SOLID).

• Familiarity with CI/CD using CircleCI and GitHub Actions, infrastructure as code, and observability tools such as Datadog or equivalent.

• Solid testing and verification mindset, with a focus on delivering reliable, high-quality software where accuracy and correctness are critical.

• Understanding of application security best practices (authentication/authorization, IAM, secrets management, data protection).

• Experience contributing to product delivery, including planning, epics and cross-functional collaboration.

• Experience using AI-powered tools.