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Perficient

Senior Full Stack Developer

SAINT LOUIS, MO, United States

Apply on fa-etqd-saasfaprod1.fa.ocs.oraclecloud.com About employer

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Job details

Experience: 7+ years of professional software engineering experience, including significant experience delivering modern full-stack web applications in production environments.
Posting language: English
Posted: Nov 12, 2026

Original job description

We’re building a large healthcare portal and the services behind it - a React web application, a suite of embeddable micro-frontend widgets, and a serverless Python API layer on AWS. You’ll own a significant area of this platform end to end: shaping the design, writing the code, securing it, shipping it through CI/CD, and operating it in production. This is a true full-stack role - frontend and backend are equally important, and you’re expected to be effective across both. You’ll move comfortably between a React UI, the serverless APIs behind it, and the infrastructure that runs it all. This is a senior role for someone who can take an ambiguous problem, drive it to a well-architected solution, and deliver with minimal oversight. You’ll set technical direction in your area, raise the quality bar, and mentor others - not wait to be handed tickets.

Own a domain end to end across the full stack - from the React UI through the serverless API to the data and infrastructure that backs it.
Build and maintain features in a React single-page application and a family of independently deployable micro-frontend widgets that embed into it.
Design and implement Python serverless APIs (AWS Lambda behind API Gateway), with typed request/response models and an OpenAPI contract as the source of truth.
Build and evolve identity and authorization - OAuth2/OIDC sign-in, MFA, token validation, and fine-grained, entitlement-based access control (including delegated/third-party access scenarios).
Integrate with upstream enterprise APIs: model their contracts defensively, handle partial/missing data gracefully, run calls concurrently, and keep changes backward-compatible.
Design data and caching layers (e.g., DynamoDB), manage secrets, and tune performance and reliability of your services.
Harden everything for a regulated, PII/PHI-sensitive environment - data masking, least-privilege access, secrets management, and secure handling of personal data by default.
Own your CI/CD: automated linting, type-checking, tests, security scans, and infrastructure changes through to production.
Define and evolve infrastructure as code, and participate in operational ownership of your services.
7+ years of professional software engineering experience, including significant experience delivering modern full-stack web applications in production environments.
Strong hands-on experience building frontend applications with React, TypeScript, and modern single-page application architectures.
Proven experience designing and developing backend services using Python, including RESTful APIs, service integration, and API contract-driven development.
Deep experience with AWS cloud services, including AWS Lambda, API Gateway, DynamoDB, IAM, CloudWatch, and related serverless technologies.
Strong understanding of authentication and authorization technologies, including OAuth 2.0, OpenID Connect (OIDC), MFA, token-based security, and role- or entitlement-based access controls.
Experience implementing secure software solutions in environments containing sensitive customer, healthcare, financial, or regulated data.
Demonstrated expertise with CI/CD pipelines, automated testing, code quality controls, security scanning, and release automation.
Hands-on experience with Infrastructure as Code (IaC) using tools such as Terraform, AWS CDK, CloudFormation, or similar technologies.
Experience designing scalable data solutions using NoSQL and/or relational databases, including performance optimization, caching strategies, and data modeling.
Strong understanding of software engineering best practices, including system design, automated testing, observability, resiliency, and production support.
Proven ability to lead technical initiatives, independently drive ambiguous requirements to implementation, and make architectural decisions with minimal oversight.
Experience mentoring engineers, conducting code reviews, and influencing engineering standards and technical direction across a team.
Excellent written and verbal communication skills, with the ability to collaborate effectively across product, engineering, architecture, security, and business stakeholders.

WHAT WE BELIEVE

At Perficient, we promise to challenge, champion, and celebrate our people. You will experience a unique and collaborative culture that values every voice. Join our team, and you’ll become part of something truly special. We believe in developing a workforce that is as diverse and inclusive as the clients we work with. We’re committed to actively listening, learning, and acting to further advance our organization, our communities, and our future leaders… and we’re not done yet. Perficient, Inc. proudly provides equal employment opportunities (EEO) to all employees and applicants for employment without regard to race, color, religion, gender, sexual orientation, national origin, age, disability, genetic information, marital status, amnesty, or status as a protected veteran in accordance with applicable federal, state and local laws. Perficient, Inc. complies with applicable state and local laws governing non-discrimination in employment in every location in which the company has facilities. This policy applies to all terms and conditions of employment, including, but not limited to, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation, and training. Perficient, Inc. expressly prohibits any form of unlawful employee harassment based on race, color, religion, gender, sexual orientation, national origin, age, genetic information, disability, or covered veterans. Improper interference with the ability of Perficient, Inc. employees to perform their expected job duties is absolutely not tolerated.

Disability Accommodations:

Perficient is committed to providing a barrier-free employment process with reasonable accommodations for qualified individuals with disabilities and disabled veterans in our job application procedures. If you need assistance or accommodation due to a disability, please contact us. Applications will be accepted until the position is filled or the posting is removed. The salary range for this position takes into consideration a variety of factors, including but not limited to skill sets, level of experience, applicable office location, training, licensure and certifications, and other business and organizational needs. The new hire salary range displays the minimum and maximum salary targets for this position across all US locations, and the range has not been adjusted for any specific state differentials. It is not typical for a candidate to be hired at or near the top of the range for their role, and compensation decisions are dependent on the unique facts and circumstances regarding each candidate. A reasonable estimate of the current salary range for this position is $92,700 to $120,500. Please note that the salary range posted reflects the base salary only and does not include benefits or any potential variable compensation programs. Information regarding the benefits available for this position are in our benefits overview.

Disclaimer: The above statements are not intended to be a complete statement of job content, rather to act as a guide to the essential functions performed by the employee assigned to this classification. Management retains the discretion to add or change the duties of the position at any time.

Perficient is the global AI and technology consulting firm disrupting the traditional consulting model. Powered by our 7,000+ advisors, engineers, and designers, Perficient implements AI-first solutions that break conventions and deliver outcomes that matter. Proudly serving clients that represent the world’s most innovative brands, and in collaboration with our powerful technology partner ecosystem, we bring deep industry expertise and data-driven design to redefine how businesses run and succeed. Perficient is different. For real. Learn more at perficient.com.

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Jobs in the United States