Senior API Platform Software Engineer

System One, Inc.; Pittsburgh (Allegheny County); Hybrid; USD 130,000 - 180,000; Full time

Job summary

System One, Inc. seeks a Senior API Platform Software Engineer to build and enhance backend services, APIs and API platform capabilities in an AWS-based financial services environment.

The role is hands-on with Java and/or Python, REST APIs, microservices and Apigee, requiring strong API security skills and DevOps experience. You will develop secure APIs, manage API lifecycles, and work within a distributed AWS environment, collaborating with DevOps, Security and Architecture teams.

Qualifications

• 5+ years of hands-on development experience with Java and/or Python.
• Strong experience with RESTful APIs, backend services and microservices.
• Hands-on AWS experience including EC2, ECS, EKS, Lambda, S3, IAM, Route 53, CloudWatch.
• Experience with Apigee OPDK, Apigee X, or Apigee Hybrid.
• Understanding of API lifecycle, versioning, throttling, traffic management, security, and analytics.
• API security experience with OAuth 2.0, JWT, mTLS, and API Keys.
• Knowledge of OpenAPI / Swagger.
• Experience with GitHub or GitLab, Terraform, and CI/CD.
• Working knowledge of JavaScript / TypeScript.
• Experience with Kubernetes, ECS, and EKS.
• Monitoring with OpenTelemetry, Splunk, and CloudWatch.
• Knowledge of load balancing, caching, HA, resiliency, DR.
• Experience with relational and NoSQL databases.
• Agile/Scrum experience.

Responsibilities

• Develop secure and scalable RESTful APIs, backend services, and microservices.
• Support the API lifecycle including implementation, versioning, security, and monitoring.
• Develop applications using Java and/or Python.
• Build and support API management with Apigee.
• Implement API security with OAuth 2.0, JWT, mTLS, and API keys.
• Work with AWS cloud services and containerized platforms.
• Support CI/CD, Infrastructure as Code, and observability.
• Troubleshoot API, cloud, and performance issues; collaborate with Product, DevOps, Security, and Architecture teams.

Skills

Java 8–21

Python

REST APIs

Backend services

Microservices

AWS

Apigee (OPDK/X/Hybrid)

OAuth 2.0

JWT

mTLS

OpenAPI / Swagger

GitHub / GitLab

Terraform

CI/CD

Kubernetes / EKS

OpenTelemetry / Splunk / CloudWatch

SQL / NoSQL

Agile/Scrum

Education

Bachelor’s degree in Computer Science, Software Engineering, Information Technology, or a related technical field.

Tools

EC2

ECS

EKS

Lambda

S3

IAM

Route 53

CloudWatch

Job description

Senior API Platform Software Engineer

Fulltime

Hybrid – Knoxville, TN | Columbia, SC | Lafayette, LA | Birmingham, AL

Position Overview

Seeking a Senior API Platform Software Engineer to build and enhance backend services, APIs, and API platform capabilities within a highly distributed, AWS-based financial services environment.

This is a hands‑on role requiring strong experience with Java and/or Python, REST APIs, Microservices, AWS, Apigee, API Security, and DevOps.

Key Responsibilities

• Develop secure and scalable RESTful APIs, backend services, and microservices.
• Support the complete API lifecycle including implementation, versioning, security, performance, monitoring, and production support.
• Develop applications using Java and/or Python.
• Build and support API management solutions using Apigee.
• Implement API security using OAuth 2.0, JWT, mTLS, and API key management.
• Work with AWS cloud services and containerized platforms.
• Support CI/CD, Infrastructure as Code, monitoring, and observability.
• Troubleshoot API, cloud, application, and performance issues.Collaborate with Product, DevOps, Security, and Architecture teams.

Must-Have Skills

• 5+ years of hands‑on development experience with Java 8–21 and/or Python.
• Strong experience with RESTful APIs, backend services, and microservices.
• Hands‑on AWS experience including:
  • EC2
  • ECS
  • EKS
  • Lambda
  • S3
  • IAM
  • Route 53
  • CloudWatch
• Strong experience with Apigee OPDK, Apigee X, or Apigee Hybrid.
• Strong understanding of API lifecycle, versioning, throttling, traffic management, security, and analytics.
• API security experience with OAuth 2.0, JWT, mTLS, and API Keys.
• Knowledge of OpenAPI / Swagger.
• Experience with GitHub or GitLab, Terraform, and CI/CD.
• Working knowledge of JavaScript / TypeScript.
• Experience with Kubernetes, ECS, and EKS.
• Monitoring experience with OpenTelemetry, Splunk, and CloudWatch.
• Knowledge of load balancing, caching, high availability, resiliency, and disaster recovery.
• Experience with relational and NoSQL databases.
• Agile/Scrum experience.

Nice-to-Have Skills

• GraphQL.
• AWS CloudFormation.

Key Technologies

Java | Python | AWS | REST APIs | Microservices | Apigee | OAuth 2.0 | JWT | mTLS | OpenAPI | Swagger | ECS | EKS | Kubernetes | Terraform | GitHub | GitLab | OpenTelemetry | Splunk | CloudWatch | JavaScript | TypeScript | SQL | NoSQL

Education

• Bachelor’s degree in Computer Science, Software Engineering, Information Technology, or a related technical field.

The real hiring focus is Java/Python + API development + Apigee + AWS + API Security (OAuth/JWT/mTLS) + Microservices
#M1 #DI-CB2 #L1 - KB1

Why Join Us?

You will have the opportunity to work on high-impact cloud data initiatives supporting enterprise risk and analytics with one of world class fortune 500 company. This role offers exposure to modern AWS technologies, complex data challenges, AI-enabled automation, and cross‑functional collaboration within a major financial services environment.

Ref: #404-IT Pittsburgh