Senior API Engineer

henryschein; Dublin; On-site; EUR 90,000 - 120,000; Full time

Job summary

Henry Schein in Dublin, Ireland, seeks an experienced Senior API Engineer to lead the design, development and optimization of our API ecosystem. You will report to the Lead API Engineer and collaborate across product, engineering and DevOps to deliver scalable, secure integrations.

The role focuses on RESTful and GraphQL APIs, microservices, cloud deployments with Docker and Kubernetes, and data integration with Databricks.

Qualifications

• 5+ years of API development experience with REST and GraphQL.
• Proficient in Python, Java, Node.js, or Go.
• Strong microservices and event-driven design knowledge.
• Experience with API management platforms (Mulesoft, Apigee, etc.).
• Experience with cloud providers and containerization.
• Security expertise (OAuth2, JWT, API keys).
• Ability to collaborate with cross-functional teams.

Responsibilities

• Architect and develop APIs and microservices for scalability.
• Collaborate with product, engineering, and DevOps on guidelines.
• Implement authentication, authorization, and encryption standards.
• Optimize performance with caching and monitoring tools.
• Lead code reviews and mentor junior engineers.
• Deploy via AWS/GCP/Azure with Docker/Kubernetes.
• Integrate APIs with Databricks and data pipelines.
• Document APIs and ensure reliability.
• Stay current with serverless and security trends.

Skills

RESTful APIs

GraphQL APIs

Python

Java

Node.js

Go

Cloud platforms

CI/CD

Security (OAuth2, JWT)

Education

Bachelor’s degree in CS/ related field

Tools

Mulesoft

Kong

Apigee

AWS API Gateway

Azure API Management

Databricks

Docker

Kubernetes

Job description

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 Holdingsstrives 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.