API Engineer

Senior API EngineerCharlotte, NC (Hybrid - 3 days onsite / 2 days remote)Onsite/HybridCompensation: $68/hourAbout The RoleJoin a high-impact API Platform team within a leading financial services organization in Charlotte, NC. As a Senior API Engineer, you will take end-to-end ownership of mission-critical APIs that power consumer-facing money movement and account services, supporting tens of billions of transactions annually. This role offers the opportunity to lead greenfield API development, modernize core payment and transfer capabilities, and collaborate with product, platform, and engineering teams to design scalable, resilient, and observable systems in a modern, cloud-native AWS environment. You will play a key role in architectural decisions, system design, and the ongoing evolution of high-volume, transactional platforms. This position is ideal for a senior engineer who thrives in a collaborative environment, can independently drive large bodies of work, and is passionate about building robust, production-grade systems at scale.What You'll DoDesign, develop, and own RESTful APIs supporting high-scale, transactional financial servicesLead greenfield API development while modernizing and enhancing existing platformsApply a system-level and application-architecture mindset to design, scalability, and reliabilityBuild and deploy serverless, event-driven solutions on AWS (Lambda, S3, DynamoDB, SQS, ECS, CloudWatch)Integrate and manage API gateways (Kong preferred; Apigee a plus)Participate in and influence architecture discussions, design reviews, and technical decision-makingMonitor, troubleshoot, and triage production issues using modern observability and monitoring toolsCollaborate closely with product managers, platform teams, and full-stack engineersSupport and modernize legacy services (Java/Spring, Apache Camel, limited SOAP integrations)Contribute to CI/CD pipelines, deployment strategies (blue/green, multi-region), and infrastructure automationWHAT YOU BRING6+ years of experience building backend or API-driven applicationsStrong experience designing and building APIs from scratch in high-volume, transactional environmentsProficiency with TypeScript and Node.js; familiarity with Python and Java/Spring for legacy supportHands-on experience with AWS in serverless and event-driven architecturesProven experience owning production systems, including monitoring, troubleshooting, and incident responseStrong understanding of RESTful API design and distributed system patternsAbility to work autonomously and take ownership of large bodies of workStrong collaboration and communication skills in cross-functional environmentsExperience with financial services, payments, or money-movement platforms (preferred)Experience with API management platforms such as Kong or Apigee (preferred)Infrastructure as Code experience (Terraform) (preferred)Experience with multi-region deployments and blue/green release strategies (preferred)Familiarity with Apache Camel, SOAP integrations, or hybrid REST/SOAP environments (preferred)AWS Certification (Solutions Architect - Associate or higher) (preferred)WHAT'S IN IT FOR YOUOpportunity to work on high-impact, consumer-facing systems used daily by millionsBe part of a team supporting massive scale-tens of billions of transactions annuallySignificant greenfield development alongside modernization of legacy platformsModern AWS, serverless, and event-driven architectureStrong ownership, autonomy, and technical influence for senior engineersCollaborative, cross-functional engineering environment