Senior API & Integration Engineer

Henry Schein; Dublin; On-site; EUR 110,000 - 160,000; Full time

Job summary

Henry Schein seeks an experienced Senior API Engineer to drive API design, development, and optimization across an enterprise API ecosystem. You will collaborate with product, engineering, and DevOps to ensure scalable, secure, and high-performing integrations using RESTful and GraphQL APIs.

Responsibilities include leading architectural decisions, implementing OAuth2/JWT security, and integrating with Databricks/Snowflake for real-time analytics.

Qualifications

• Bachelor's degree in CS, Applied Math, Statistics, ML, or related field.
• 5+ years in API development, focusing on RESTful and GraphQL APIs.
• Proficient in Python, Java, Node.js, or Go.
• Hands-on experience with API management tools (Mulesoft, Kong, Apigee, AWS API Gateway, or Azure API Management).
• Strong microservices architecture and event-driven design patterns.
• Experience with AWS, GCP, or Azure and containerization (Docker, Kubernetes).
• Advanced knowledge of OAuth2, JWT, and API key management.
• Familiarity with caching, load balancing, and monitoring (Prometheus, Grafana).
• Knowledge of CI/CD pipelines and DevOps practices.
• Experience with Databricks, Spark, or Snowflake for data integration.
• Excellent problem-solving and collaboration skills.

Responsibilities

• Architect & Develop: build APIs and microservices with high availability and performance at scale.
• Strategic Collaboration: align API guidelines and patterns across teams.
• Security & Compliance: implement OAuth2, JWT, and API key management.
• Optimize & Innovate: use caching, rate-limiting, and monitoring to maximize throughput.
• Technical Leadership: code reviews, mentoring, and best-practices evangelism.
• Cloud & Containers: host microservices on AWS/GCP/Azure using Docker/Kubernetes.
• Data Integration: connect APIs with Databricks, Spark, or Snowflake for analytics.
• Documentation & Reliability: produce developer docs and ensure robust testing.
• Continuous Improvement: stay updated on serverless, edge computing, and security trends.

Skills

RESTful API development

GraphQL

Microservices architecture

Python

Java

Node.js

Go

OAuth2/JWT security

Education

Bachelor's degree in Computer Science or related field

Tools

Mulesoft

Kong

Apigee

AWS API Gateway

Azure API Management

Docker

Kubernetes

Prometheus

Grafana

Databricks

Snowflake

Job description

We are seeking an experienced Senior API Engineer to help drive the design, development, and optimization of our API ecosystem. Reporting to the Lead API Engineer, this role will be responsible for helping build and optimize API solutions, ensuring scalability, security, and performance. The ideal candidate will have strong hands-on experience with modern API frameworks, microservices architecture, and cloud-based solutions, as well as a track record of collaborating with cross-functional teams to deliver seamless integrations. Experience with Databricks is a plus, particularly in integrating APIs with big data pipelines and analytics solutions.

Key Responsibilities:

• Architect & Develop: Help drive the planning, building, and deploying APIs and microservices, focusing on high availability and superior performance at scale.
• Strategic Collaboration: Partner with product management, engineering, and DevOps teams to define API guidelines, governance models, and integration patterns that drive alignment across the organization.
• Security & Compliance: Implement and enforce authentication, authorization, and encryption standards (OAuth2, JWT, API key management) to protect assets and meet industry regulations.
• Optimize & Innovate: Leverage caching, rate-limiting, and advanced monitoring tools (Prometheus, Grafana) to maximize throughput, minimize latency, and ensure proactive issue detection.
• Technical Leadership: Conduct rigorous code reviews, mentor junior engineers, and champion best practices in API design and microservices architecture to maintain technical excellence.
• Cloud & Containers: Utilize AWS, GCP, or Azure to host and orchestrate microservices, employing Docker and Kubernetes for efficient, containerized deployments.
• Data Integration: Integrate APIs with Databricks, Spark, or Snowflake to facilitate advanced analytics and real-time data processing, enabling faster, data-driven decisions.
• Documentation & Reliability: Produce developer-centric documentation and implement thorough testing to minimize downtime while ensuring consistent, high-quality API experiences.
• Continuous Improvement: Stay current with emerging trends in API development—like serverless computing, edge computing, and new security frameworks—to continuously evolve our ecosystem.

Required Qualifications:

• Education: Bachelor's degree (or foreign equivalent) in Computer Science, Applied Mathematics, Statistics, Machine Learning, or a closely related field.
• Experience: 5+ years in API development, focusing on RESTful and GraphQL APIs.
• Programming: Proficient in Python, Java, Node.js, or Go.
• API Management: Hands-on experience with Mulesoft, Kong, Apigee, AWS API Gateway, or Azure API Management.
• Architecture: Strong grasp of microservices architecture and event-driven design patterns.
• Cloud & Containers: Expertise with AWS, GCP, or Azure and containerization (Docker, Kubernetes).
• Security: Advanced knowledge of OAuth2, JWT, and API key management.
• Optimization Tools: Familiarity with caching, load balancing, and monitoring (Prometheus, Grafana).
• DevOps & CI/CD: Knowledge of CI/CD pipelines and DevOps practices for streamlined deployments.
• Big Data Integration: Experience working with Databricks, Spark, or Snowflake.
• Soft Skills: Excellent problem-solving, attention to detail, and ability to thrive in fast-paced environments.

Preferred Qualifications:

• Serverless Tech: Experience with AWS Lambda, Google Cloud Functions, or Azure Functions.
• Messaging: Familiarity with Kafka, RabbitMQ, or other event-driven frameworks.
• Database Skills: Understanding of both SQL (PostgreSQL, MySQL) and NoSQL (MongoDB, DynamoDB) databases.
• Agile Environment: Background in agile development settings.
• Industry Experience: Healthcare experience is a plus.
• Leadership & Communication: Strong communication skills and the ability to mentor and guide team members.

Henry Schein is committed to the principle of equal opportunities in employment in all spheres of its operation. Henry Schein UK Holdings strives to operate a policy of equal opportunity and not discriminate against any person gender, race, colour, nationality, ethnic or national origin, religion, sexual orientation, marital status, disability, age or any other characteristic protected by law.