Senior Developer, API

🔥 0 minutes ago

🌽 Illinois – Remote

🌽 Illinois – Remote

💵 $119.2k - $155k / year

⏰ Full Time

🟠 Senior

🔙 Backend Engineer

👻 Ghost score 0%

What it means: how likely this posting is sitting open without active hiring.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.How we score it: age, reposts, open roles vs team size, how fast jobs close, and whether pay is listed.Fine print: an estimate from public data, not a judgment of the company. Real jobs can score high, so treat it as a hint, not a fact.

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YPO

WebsiteLinkedInAll Job Openings

201 - 500 employees

🤝 B2B

☁️ SaaS

📣 Marketing

B2B • SaaS • Marketing

YPO is a company that provides dynamic URL shortening, QR code generation, analytics, and comprehensive link management solutions for businesses. The company's products include branded links, mobile links, and UTM campaigns, offering integrations and APIs to enhance customer engagement across various industries such as retail, consumer goods, media, tech, and professional services. With a focus on data-driven solutions, YPO aims to streamline operations and improve user experience for its diverse clientele worldwide.

📋 Description

• Design, build, and maintain YPO’s API platform supporting its member ecosystem, chapter operations, and agentic AI platform • Own engineering implementation across the Members API, Chapters API, and Agentic Ecosystem APIs • Design and implement production-grade RESTful and GraphQL APIs deployed via AWS API Gateway • Ensure APIs conform to YPO’s canonical ontology and global member graph without exposing Salesforce object structures • Build APIs using event-driven architecture, CDC, Kafka, AWS EventBridge, idempotent patterns, and Domain-Driven Design • Apply serverless-first architecture using AWS Lambda, Step Functions, and EventBridge • Define data models, versioning standards, authentication flows, and integration patterns • Apply pagination, caching, query constraints, and rate limiting for scalable API performance • Enforce privacy-first architecture, consent enforcement, transparent data usage, provenance, and explanation metadata • Implement governance for AI-agent interactions with member data using OpenAI, custom RAG, and Google Gemini • Build structured retrieval, citation-ready provenance, consent-aware filtering, deterministic fallback, and kill-switch-capable API boundaries • Instrument agent API integrations to measure hallucination rates, task success rates, and cost per outcome • Own API development, testing, documentation, versioning, deprecation, and migration planning • Maintain sandbox environments, integration test suites, and automated contract tests • Support CI/CD, deployment automation, Datadog observability, alerting, uptime SLAs, and Infrastructure as Code using Terraform or AWS CDK • Design and enforce least-privilege IAM boundaries, permission boundaries, and Service Control Policies • Contribute to YPO’s multi-account AWS strategy using AWS Organizations and Control Tower • Produce API documentation, example queries, and troubleshooting guides • Support technical onboarding for product teams and integration partners • Collaborate with Data Architecture, IT, Security, Product, Data Science, ML, and Engineering teams • Evaluate and integrate Elasticsearch, Kafka/AWS EventBridge, and Search Orchestration Service • Deliver reliable APIs, tested endpoints, documented lifecycle plans, secure agent integrations, explainable responses, observable integrations, and IaC-compliant infrastructure

🎯 Requirements

• Bachelor’s degree in computer science, Information Security, or related field (or equivalent experience) • 5+ years of hands-on experience in security engineering • At least 3 years focused on cloud infrastructure security (AWS, Azure, and/or GCP) • Experience integrating security tooling into CI/CD platforms such as GitHub Actions, Azure DevOps, GitLab CI, and Jenkins • Experience securing AI/ML infrastructure, including model APIs, data pipelines, vector databases, and inference endpoints • Experience with AI technologies, monitoring LLM usage, and auditing model access controls • Experience with API abuse detection across the entire SDLC • Strong experience with IaC tools such as Terraform, CloudFormation, and ARM • Familiarity with container security and Kubernetes environments • Experience with SAST, DAST, SCA, and dependency scanning tools • Proficiency in Python or equivalent scripting language • Strong knowledge of IAM, encryption, OAuth/OIDC, RBAC, and secure cloud architecture principles • Understanding of SOC 2, ISO 27001, and NIST frameworks • Exposure to mobile application security on native iOS and/or Android platforms, including API security, token management, and mobile threat defense • Security certifications are highly desirable, including AWS, Azure, GCP, CISSP, CCSP, and GIAC • Ability to work collaboratively in a multicultural organization with international members • Excellent interpersonal, diplomacy, communication, organization, prioritization, and problem-solving skills • Ability to translate complex security risks into clear business decisions • Demonstrated ability to work across product, engineering, and global teams • Strong architectural judgment and risk-based decision-making • High discretion and integrity when handling confidential information • Ability to operate independently in fast-moving, ambiguous environments • Willingness and ability to travel domestically and internationally without restrictions, approximately 5–10% per year

🏖️ Benefits

• Performance-based bonus opportunities • Remote work flexibility • Comprehensive rewards package built around wellbeing and growth • Flexible and/or extended hours as needed to accommodate members and team members in multiple time zones • Approximately 5–10% domestic and international travel