Backend API’s and Integrations Software Engineer III

LexisNexis Risk Solutions; Philadelphia (Philadelphia County); On-site; USD 78,800 - 131,300; Full time

Job summary

LexisNexis Risk Solutions is looking for a Software Engineer III in Philadelphia to design, build, and manage backend services and APIs. This role emphasizes backend API lifecycle management and enterprise integrations, primarily using Java and JavaScript.

Ideal candidates should have a solid understanding of distributed systems and network fundamentals. The position offers a competitive salary between $78,800 to $131,300 with bonus eligibility and a focus on innovative healthcare solutions.

Qualifications

• 3+ years of professional experience in backend software engineering.
• Proficient in Java; working proficiency in JavaScript/Node.js.
• Hands-on experience in Kong API Management with CI/CD integration.
• Experience deploying services in cloud or containerized environments.

Responsibilities

• Design and build distributed services focusing on microservices architecture.
• Configure and manage APIs using Kong Gateway and CI/CD practices.
• Build and maintain FHIR data facades and backend integrations.
• Own the API lifecycle including design, implementation, and testing.
• Implement security practices in authentication and network management.

Skills

Java

Node.js

RESTful API design

YAML

Kong API Management

microservices fundamentals

networking fundamentals

HL7 FHIR

Tools

Docker

Kubernetes

Job description

About the role

We’re seeking a Software Engineer III with strong backend engineering skills to design, build, and operate distributed integration services and APIs at scale. You will focus on Kong API Management, backend API lifecycle (setup, testing, maintenance), HL7 FHIR, and enterprise integrations, primarily using Java and JavaScript. The ideal candidate has solid network fundamentals, can work comfortably with YAML (for declarative configs and pipelines), and thrives in pragmatic, production‑oriented engineering—no frontend development in this space.

About the team

This team is building a generative‑AI‑powered clinical decision support tool designed specifically to help healthcare professionals quickly find trusted, evidence‑based answers at the point of care. It combines a massive curated medical knowledge base with conversational AI so clinicians can ask questions in natural language and get concise, clinically relevant responses backed by real scientific evidence.

Responsibilities

• Design & build distributed services: implementing resilient, observable microservices and integration components (Java preferred; Node.js/JavaScript where appropriate); applying patterns for scaling, fault tolerance, idempotency, and backpressure in distributed environments.
• API Platform & Kong APIM: configuring and managing Kong Gateway (routes, services, plugins, rate limiting, auth, mTLS, logging) via declarative config (YAML) and CI/CD; implementing gateway policies for security, traffic control, blue/green/canary releases, and zero‑downtime migrations.
• Integrations & data facades: building and maintaining a FHIR data facade that maps internal domain data to FHIR resources (read/search/transform), ensuring correctness and performance; developing backend integrations with downstream systems (REST, gRPC, messaging/queues) and handling schema/contract evolution.
• API engineering: owning the API lifecycle—design (OpenAPI), implementation, automated testing (unit/integration/contract), versioning, and SLO‑driven operations; creating and maintaining OpenAI specs, mocks, and validation pipelines.
• Security & compliance: implementing OAuth2/OIDC flows, token introspection, and service‑to‑service auth; applying secure coding practices and least‑privilege network policies; partnering with InfoSec on reviews.

Required Qualifications

• 3+ years of professional experience in backend software engineering.
• Proficient in Java; working proficiency in JavaScript/Node.js.
• RESTful API design, OpenAPI/Swagger, contract testing, backward compatibility/versioning.
• Hands‑on experience configuring routes, plugins, auth, rate limiting, and declarative YAML configs in Kong APIM with CI/CD integration.
• Understanding of microservices fundamentals: statelessness, service discovery, retries/circuit breakers, caching.
• Networking fundamentals: TCP/IP, DNS, TLS/mTLS, HTTP/2/HTTP/1.1, proxies, load balancing, and troubleshooting (cURL, traceroute, etc.).
• Experience with HL7 FHIR or adapters; familiarity with FHIR resource modeling and transformations (e.g., Patient, Observation, Encounter).
• Unit, integration, and contract testing; test automation and CI/CD pipelines (YAML‑based workflows).
• Experience deploying and operating services in a cloud or containerized environment (Docker/Kubernetes).

Benefits and Compensation

U.S. National Base Pay Range: $78,800 - $131,300. Geographic differentials may apply in some locations to better reflect local market rates. This job is eligible for an annual incentive bonus.

Equal Opportunity Statement

We are an equal opportunity employer: qualified applicants are considered for and treated during employment without regard to race, color, creed, religion, sex, national origin, citizenship status, disability status, protected veteran status, age, marital status, sexual orientation, gender identity, genetic information, or any other characteristic protected by law.