NantHealth · 3 months ago
Senior Developer Applications - API
El Segundo CA Mariposa
Full-time
Onsite
Senior Level
$153K/yr - $170K/yr
5+ years expImmunityBio, Inc. is a commercial-stage biotechnology company focused on developing innovative cell and immunotherapy products to enhance the human immune system in the fight against cancer. The Senior Developer, Applications - API will design and build business applications and integrations, ensuring they meet strategic business objectives while adhering to best practices in application architecture and security.
Health CareHealth DiagnosticsHospitalMedicalTherapeutics
Responsibilities
Design and implement end-to-end API integrations, including authentication, error handling, rate limiting, and retries
Build and maintain scalable, secure, and well-documented RESTful and GraphQL APIs for internal and external consumption
Evaluate and integrate with third-party APIs from partners, vendors, and platforms (e.g., Stripe, Salesforce, Shopify, AWS, Twilio)
Adhere to secure coding practices and ensure all integrations adhere to security and compliance standards (e.g., OWASP Top 10, data encryption, access control)
Conduct regular code audits and security reviews of API implementations, both internal and third-party
Design authentication and authorization flows using best practices such as OAuth 2.0, API tokens, and JWT with expiration/refresh strategies
Develop reusable integration patterns and middleware services to streamline future API work
Ensure integration reliability with automated testing, monitoring, logging, and alerting
Collaborate with DevOps teams to manage API gateway configurations, reverse proxies, and load balancing (e.g., AWS API Gateway, NGINX, Kong)
Secure API endpoints using industry-standard practices (e.g., OAuth2, OpenID Connect, HMAC, API key management)
Optimize API performance and scalability using caching (e.g., Redis, CDN), pagination, and asynchronous processing where appropriate
Work with large datasets in transit and build resilient data synchronization mechanisms
Maintain backward compatibility and version control for public-facing APIs
Perform code reviews and enforce best practices around integration architecture and error handling
Create and maintain comprehensive documentation on all integrations, development, and changes
Participate in incident response and postmortems related to API outages or third-party failures
Create, edit and adhere to Standard Operating Procedures (SOPs), process improvements, and standardization of templates
Perform ad-hoc and cross-functional projects assigned to support business needs and provide developmental opportunities
Qualification
Required
Bachelor's degree in computer science, Engineering, or a related field with 5+ years of backend development experience with a strong focus on API architecture and integration required
Experience with API schema management tools like Swagger/OpenAPI, Postman, or Stoplight required
Experience with API Gateway platforms (e.g., AWS API Gateway, Kong, Apigee, NGINX) required
Experience with transport layer security (TLS), HTTPS, certificate pinning, and secure transmission of sensitive data required
Proficiency in at least one backend language or framework: Node.js, Python (Django/Flask/FastAPI), Java (Spring Boot), or C# (.NET Core)
Deep understanding of REST, GraphQL, Webhooks, WebSockets, and gRPC
Knowledge of HTTP/HTTPS protocols, status codes, CORS, content negotiation, and idempotency
Proficiency working with OAuth 2.0, JWT, API keys, and secure token exchange mechanisms
Strong Git/GitHub (or GitLab/Bitbucket) workflow experience, including branching strategies and CI/CD
Understanding of OWASP API Security Top 10, with experience mitigating common vulnerabilities like injection, insecure object references, and excessive data exposure
Knowledge of API rate limiting, throttling, IP whitelisting, and other protective measures to prevent abuse
Preferred
Experience using static and dynamic analysis tools for security testing (e.g., Snyk, SonarQube, Burp Suite, OWASP ZAP) preferred
Familiarity with message brokers and event-driven architectures (e.g., Kafka, RabbitMQ, SNS/SQS)
Familiarity with serverless integration models using AWS Lambda, Azure Functions, or GCP Cloud Functions
Proficiency with data transformation tools (e.g., JSONPath, JQ, XML/XSLT)
Familiarity with IAM (Identity and Access Management) principles and tools (e.g., RBAC, ABAC, AWS IAM)
Understanding of middleware platforms (e.g., MuleSoft, Workato, Dell Boomi) or iPaaS tools
Exposure to monitoring and tracing tools like Datadog, New Relic, Prometheus, Grafana, or OpenTelemetry
Working knowledge of Docker and basic container orchestration with Kubernetes or ECS/EKS
Benefits
Medical, Dental and Vision Plan Options
Health and Financial Wellness Programs
Employer Assistance Program (EAP)
Company Paid and Voluntary Life/AD&D, Short-Term and Long-Term Disability
Healthcare and Dependent Care Flexible Spending Accounts
401(k) Retirement Plan with Company Match
529 Education Savings Program
Voluntary Legal Services
Identity Theft Protection
Pet Insurance and Employee Discounts, Rewards and Perks
Paid Time Off (PTO) includes: 11 Holidays
Exempt Employees are eligible for Unlimited PTO
Non-Exempt Employees are eligible for 10 Vacation Days, 56 Hours of Health Pay, 2 Personal Days and 1 Cultural Day
Company
NantHealth
NantHealth is a healthcare company providing an evidence-based platform for healthcare diagnostics. It is a sub-organization of NantWorks.
201-500 employees
H1B Sponsorship
NantHealth has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (5)
2024 (6)
2023 (5)
2022 (9)
2021 (1)
2020 (10)
Funding
Current Stage
Public CompanyTotal Funding
$980.2MKey Investors
VeradigmCelgeneVerizon Ventures
2023-03-06Post Ipo Debt· $22.5M
2021-05-06Post Ipo Debt· $147.5M
2016-12-01Post Ipo Debt· $102.7M
Leadership Team
Lauren Schiegg
Chief Operating Officer
Ron Louks
Chief Operating Officer
Recent News
globalventuring.com
2025-10-27
Company data provided by crunchbase