Senior Software Engineer - Full Stack

At Bristol Myers Squibb, our employees often ask, “Who are you working for?”—a question that fuels collaboration, accountability, and urgency in our work. Our purpose-driven culture inspires us to discover, develop, and deliver innovative medicines to prevail over serious diseases. We offer uniquely interesting and meaningful work, opportunities for growth, and a supportive environment that values inclusion, wellbeing, flexibility, and comprehensive benefits. This is work that transforms the lives of patients, and the careers of those who do it.

Role Overview

We are seeking a Senior Software Engineer (Full Stack Developer) to design, build, and maintain scalable web applications across the front end, back end, and cloud infrastructure. This role requires a strong foundation in modern JavaScript/TypeScript frameworks, Python and Node.js backend development, containerized microservices, and hands-on experience deploying and operating applications on AWS. The ideal candidate is comfortable owning features end-to-end — from UI implementation to API design to cloud deployment — and collaborates effectively within an Agile team.

Key Responsibilities

• Design, build, and maintain full stack web applications spanning front-end, back-end, and cloud environments

• Develop and integrate REST/SOAP APIs and microservices to support business applications and AI-driven workflows

• Enhance, troubleshoot, and support existing production applications, ensuring reliability, performance, and scalability

• Deploy and manage applications on AWS using containerized (Docker/ECS Fargate) and serverless (Lambda/API Gateway) architectures

• Collaborate with product managers, designers, and fellow engineers within an Agile development process

• Participate in code reviews and apply static code analysis and security scanning tools to maintain code quality

• Collaborate with IT partners, business teams, and the broader IT matrix organization to understand requirements and use cases, support solution design and delivery of new digital capabilities, and contribute to the enablement and simplification of existing ones — translating requirements into user stories, epics, and sprint-ready tasks using Agile/Scrum methodologies

• Gather requirements, propose solution options, and communicate technical concepts clearly to non-technical stakeholders

Desired Experience

Front End

• Strong hands-on experience building production applications with ReactJS (with TypeScript); working knowledge of Next.js

• Experience with React Native for mobile development

• Exposure to an additional front-end framework such as Vue.js is a plus

• Strong proficiency in JavaScript (ES6+), HTML, and CSS

• Experience with modern CSS frameworks/libraries such as Tailwind CSS, Bootstrap, and component libraries like shadcn/ui

Back End

• Solid experience with Python and Node.js for building server-side applications and services

• Experience designing and building REST APIs; familiarity with SOAP APIs

• Hands-on experience with microservices architecture and Docker containerization

• Experience with backend frameworks such as FastAPI, Flask, Django, and Express.js

• Understanding of ORM concepts and implementation

Database

• Experience with PostgreSQL and DynamoDB (or similar relational and NoSQL databases)

• Familiarity with SQLite for lightweight/local data storage use cases

• Practical experience with data modeling for both relational and NoSQL systems

Cloud (AWS)

• Hands-on experience with core AWS services: API Gateway, Lambda, S3, CloudFront, Route 53, EC2, ECR, ECS Fargate, ALB, NLB, and IAM

• Understanding of serverless and containerized deployment patterns on AWS

• Working knowledge of AWS security and access management (IAM roles/policies)

DevOps

• Proficient with Git for version control and collaborative development workflows

• Experience with Infrastructure as Code using CloudFormation

• Experience building and maintaining CI/CD pipelines with GitHub Actions and/or AWS CodePipeline, CodeBuild, and CodeDeploy

• Familiarity with static code analysis and linting tools such as PyLint and ESLint

Tools & Collaboration

• Experience using AI-assisted development tools such as Claude Code and GitHub Copilot within VS Code

• Experience working with JIRA and Confluence in an Agile development environment

• Strong track record of participating in code reviews and applying static code analysis tools such as SonarQube and Snyk Code

Good to Have

• Exposure to Generative AI and Agentic AI concepts and application development

• Experience with LangChain and/or LangGraph for building AI-driven workflows and agents

• Familiarity with Azure OpenAI and/or AWS Bedrock

• Understanding of Model Context Protocol (MCP) and its use in AI tool integrations

Required Qualifications

• Bachelor's degree in Computer Science, Software Engineering, Information Technology, or a related field (or equivalent practical experience)

• 4–7 years of professional software development experience, with demonstrated full stack project delivery

• Strong problem-solving skills and ability to work independently as well as collaboratively within a cross-functional Agile team

• Solid understanding of software engineering best practices, including version control, code review, testing, and secure coding standards

• Excellent written and verbal communication skills

• Demonstrated experience deploying and supporting applications in a cloud environment (AWS preferred)

We hire for skills and capabilities, not just credentials – if this role excites you, but doesn’t perfectly match your resume, we encourage you to apply anyway.

How We Work

Where you work matters – because collaboration, innovation and patient impact happen in many settings. Our roles are structured across four work models: site-essential, site-by-design, field-based and remote-by-design. The model assigned to this role is based on its core responsibilities. Learn more at https://careers.bms.com/ways-of-working.

Supporting People with Disabilities

BMS is dedicated to ensuring that people with disabilities can excel through a transparent recruitment process, reasonable workplace accommodations/adjustments and ongoing support in their roles. Applicants can request a reasonable workplace accommodation/adjustment prior to accepting a job offer. If you require reasonable accommodations/adjustments in completing this application, or in any part of the recruitment process, direct your inquiries to [email protected]. Visit careers.bms.com/eeo-accessibility to access our complete Equal Employment Opportunity statement.

Candidate Rights

BMS will consider qualified applicants with arrest and conviction records, pursuant to applicable laws in your area.

For roles based in Los Angeles County only:  If you live in or expect to work from Los Angeles County if hired for this position, please visit this page for important additional information: https://careers.bms.com/california-residents/

For roles based in Washington state only: If you live in or expect to work from Washington State if hired for this position, please visit this page for important information about the Washington Fair Chance Act.

Data Protection

We will never request payments, financial information, or social security numbers during our application or recruitment process. Learn more about protecting yourself at https://careers.bms.com/fraud-protection.

Any data processed in connection with role applications will be treated in accordance with applicable data privacy policies and regulations.

If this posting is missing required information required by local law or incorrect, contact BMS at [email protected] with the Job Title and Requisition number. Do not send application-related inquiries to this email. To check your application status, please login to your Candidate Home Account.