Senior Software Engineer

Working with Us
Challenging. Meaningful. Life-changing. Those aren’t words that are usually associated with a job. But working at Bristol Myers Squibb is anything but usual. Here, uniquely interesting work happens every day, in every department. From optimizing a production line to the latest breakthroughs in cell therapy, this is work that transforms the lives of patients, and the careers of those who do it. You’ll get the chance to grow and thrive through opportunities uncommon in scale and scope, alongside high-achieving teams. Take your career farther than you thought possible.

Bristol Myers Squibb recognizes the importance of balance and flexibility in our work environment. We offer a wide variety of competitive benefits, services and programs that provide our employees with the resources to pursue their goals, both at work and in their personal lives. Read more: careers.bms.com/working-with-us.

Position: Senior Software Engineer

Key Responsibilities

• Collaborate with stakeholders to understand business and technical requirements, analyze workflows, and design end-to-end AI/ML pipelines using data science methodologies and prompt engineering.

• Lead design, development, deployment, and maintenance of scalable software applications and machine learning solutions.

• Build software engineering applications and data science models, ensuring that ML models, LLMs are efficiently integrated into production systems and maintained at scale.

• Build and integrate backend services and APIs (Python/FastAPI/Lambda/ECS/EC2) to connect AI components with enterprise systems, enabling secure, scalable, and cloud-native architectures on AWS.

• Troubleshoot, optimize, and maintain GenAI and backend systems, including monitoring model performance, improving accuracy, enhancing service reliability, and ensuring smooth production operations.

• Work cross-functionally with product, engineering, and domain teams to identify opportunities for process improvements and to extend AI/ML and GenAI capabilities to new use cases.

• Develop and maintain technical documentation, including architecture details, model configurations, service interfaces, and operational best practices.

• Stay up-to-date with advancements in AI, LLMs, Data Science, backend engineering, and AWS cloud technologies, acting as a catalyst for innovation and driving the adoption of modern AI-driven practices across the organization.

• Strong data analytical skills, SQL, NOSQL databases.

• Mentor and coach junior members in the team.

Qualifications & Experience

• 7+ years of experience in software development, AI/ML solution design, backend engineering, or automation, with hands-on expertise in building scalable systems and AI-driven workflows.

• Strong proficiency in Python (preferred) and experience with one or more programming languages such as R Programming, along with solid understanding of software engineering best practices.

• Experience working with Generative AI and LLM-based technologies (e.g., OpenAI, Gemini)

• Hands-on experience with cloud platforms, especially AWS (Lambda, API Gateway, S3, Step Functions, SageMaker, etc.), and strong knowledge of API integration, RESTful services, and microservice architectures.

• Practical experience in data science or machine learning workflows, including data preparation, model integration, and performance evaluation.

• Functional knowledge of the Life Sciences Research & Development domain

• Familiarity with Agile methodologies, DevOps concepts, CI/CD practices, and collaborative development environments.

• Strong problem-solving and troubleshooting skills, with the ability to diagnose and resolve complex backend, integration, or AI model issues.

• Excellent analytical and decision-making abilities, with a strong focus on delivering high-quality, reliable, and scalable solutions.

• Effective interpersonal, communication, and presentation skills, with the ability to work across cross-functional teams and articulate technical concepts clearly to diverse audiences.

• Ability to work collaboratively with cross-functional teams and stakeholders

If you come across a role that intrigues you but doesn’t perfectly line up with your resume, we encourage you to apply anyway. You could be one step away from work that will transform your life and career.

Uniquely Interesting Work, Life-changing Careers
With a single vision as inspiring as “Transforming patients’ lives through science™ ”, every BMS employee plays an integral role in work that goes far beyond ordinary. Each of us is empowered to apply our individual talents and unique perspectives in a supportive culture, promoting global participation in clinical trials, while our shared values of passion, innovation, urgency, accountability, inclusion and integrity bring out the highest potential of each of our colleagues.

On-site Protocol

BMS has an occupancy structure that determines where an employee is required to conduct their work. This structure includes site-essential, site-by-design, field-based and remote-by-design jobs. The occupancy type that you are assigned is determined by the nature and responsibilities of your role:

Site-essential roles require 100% of shifts onsite at your assigned facility. Site-by-design roles may be eligible for a hybrid work model with at least 50% onsite at your assigned facility. For these roles, onsite presence is considered an essential job function and is critical to collaboration, innovation, productivity, and a positive Company culture. For field-based and remote-by-design roles the ability to physically travel to visit customers, patients or business partners and to attend meetings on behalf of BMS as directed is an essential job function.

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 for employment qualified applicants with arrest and conviction records, pursuant to applicable laws in your area.

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/

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 you believe that the job posting is missing information required by local law or incorrect in any way, please contact BMS at [email protected]. Please provide the Job Title and Requisition number so we can review. Communications related to your application should not be sent to this email and you will not receive a response. Inquiries related to the status of your application should be directed to Chat with Ripley.