Senior Infrastructure Engineer

Posted Yesterday
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New York City, NY, USA
In-Office
200K-225K Annually
Senior level
Events • Social Media • Software
Maximizing IRL human connection for the world
The Role
Design and scale Posh’s AWS cloud infrastructure for millions of users. Build infrastructure-as-code, CI/CD pipelines, observability, automation, and developer tooling; improve reliability, security, performance, and cost efficiency. Collaborate with engineering, data, security, and product teams, investigate scaling bottlenecks, and mentor engineers on infrastructure and secure deployment best practices.
Summary Generated by Built In
About Posh

We are all social creatures, but the dominant “social” companies today have evolved into digital loneliness machines, driving isolation, anxiety, and mental health challenges around the world.

Human connection is lost. Posh is a beacon guiding us back.

Posh enables anyone to build an IRL community based on shared interests, while connecting consumers with the communities of people just like them. Founded by event organizers who were frustrated with the growing loneliness epidemic and the tools available to build their own event brand, we’ve built the ultimate platform for launching, monetizing, and finding IRL communities of people just like you. In just 6 years, Posh has grown to a team of 70, expanded to 10M+ users, secured $70m in venture funding, and facilitated over $400M in transactions.

About the Role

We’re looking for a Senior Infrastructure Engineer to help design, build, and scale Posh’s cloud infrastructure as our platform grows to support millions of users every month. You’ll work closely with product engineers, data, and security teams to ensure that our systems are reliable, performant, and easy to operate.

This role combines hands-on DevOps expertise with a software engineering mindset — building automation, observability, and developer tooling that accelerates our entire organization.

This is an in-person role at our New York City office in SoHo, 5 days a week onsite.

What You’ll Do
  • Design and evolve infrastructure: Architect resilient, scalable, and secure infrastructure using cloud-native tools (AWS preferred).

  • Automate everything: Develop CI/CD pipelines and infrastructure-as-code systems (e.g., Terraform, GitHub Actions, Docker) to make deployment seamless and consistent.

  • Monitor and improve reliability: Implement alerting, logging, and tracing systems that empower teams to diagnose and resolve issues quickly.

  • Collaborate cross-functionally: Partner with the Platform PM and engineers across backend, frontend, and data to set infrastructure priorities based on growth, product plans, and operational needs—and improve how services are built, tested, deployed, and operated.

  • Harden cloud security: Contribute to IAM design, least-privilege access, and posture management across environments.

  • Drive operational excellence: Identify bottlenecks and reliability risks, and build solutions that scale with Posh’s growth.

  • Mentor and elevate: Coach engineers on best practices for infrastructure design, cloud efficiency, and secure deployment.

  • Identify and remove scaling bottlenecks: Investigate performance and cost across cloud infrastructure, databases, data warehouses, queues, and application access patterns. Use production telemetry, profiling, and load testing to identify constraints and prioritize improvements.

What You Bring
  • 5+ years of experience as an Infrastructure, DevOps, or Backend Engineer.

  • Extensive experience with Terraform and reusable infrastructure-as-code patterns

  • Deep knowledge of AWS services (ECS/EC2, Lambda, CloudWatch, IAM, Kafka, SNS/SQS, etc.) and infrastructure automation (Terraform, CloudFormation).

  • Experience with CI/CD pipelines, containerization (Docker/K8s), and orchestration systems (ECS, EKS, or equivalent).

  • Proficiency in JavaScript or Python, and familiarity with scripting for automation.

  • Strong grasp of cloud security principles, identity and access management, and cost optimization.

  • Solid understanding of networking fundamentals, observability, and system reliability.

  • Excellent communication and collaboration skills; able to partner with diverse engineering teams.

  • A passion for automation, scalability, and improving developer velocity.

Nice to Have
  • Experience with multi-region or distributed cloud systems.

  • Exposure to compliance and security tooling for cloud posture management.

  • Contributions to open-source infrastructure tools.

  • Background in mentoring engineers or leading reliability initiatives.

Posh provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws.

This policy applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation and training.

Posh is committed to providing reasonable accommodations for qualified individuals with disabilities in our job application procedures. Please let us know if you need assistance or accommodation due to a disability

Skills Required

  • 5+ years of experience as an Infrastructure, DevOps, or Backend Engineer
  • Extensive experience with Terraform and reusable infrastructure-as-code patterns
  • Deep knowledge of AWS services, including ECS/EC2, Lambda, CloudWatch, IAM, Kafka, and SNS/SQS
  • Experience with CI/CD pipelines, containerization, and orchestration systems such as ECS, EKS, or equivalent
  • Proficiency in JavaScript or Python
  • Strong understanding of cloud security principles, identity and access management, and cost optimization
  • Understanding of networking fundamentals, observability, and system reliability
  • Excellent communication and collaboration skills
  • Experience with multi-region or distributed cloud systems
  • Exposure to compliance and cloud security posture management tooling
  • Contributions to open-source infrastructure tools
  • Experience mentoring engineers or leading reliability initiatives

Posh Compensation & Benefits Highlights

  • Healthcare Strength — Posh states it covers 100% of medical, dental, and vision premiums for employees and dependents. This comprehensive coverage is presented as notably strong for a startup.
  • Equity Value & Accessibility — The company highlights competitive equity for all employees, with equity bands targeted above the 75th percentile and refresh grants every two years. This structure indicates meaningful ownership and ongoing upside.
  • Wellbeing & Lifestyle Benefits — Everyday perks include a company-paid Equinox membership, a daily Uber Eats credit on in-office days, and regular team dinners/off-sites. These offerings add tangible day-to-day value for employees working on-site.

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The Company
HQ: New York, New York
70 Employees
Year Founded: 2019

What We Do

Posh is the first social media platform dedicated to real-life social experiences. We have democratized event creation, making it easy for anyone to host events and empowering organizers to curate unique experiences. In doing so, Posh enables consumers to discover social events in their community, connect with peers around shared interests, and start and scale their own social communities.

Why Work With Us

At Posh, we're not just building an event platform—we're crafting a movement to end loneliness by fostering meaningful in-person connections. Born from the vibrant energy of NYC's event scene, our mission is to empower organizers and communities to create unforgettable experiences.

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Posh Offices

OnSite Workspace

Posh thrives on face‑to‑face energy. When we share a whiteboard, decisions compress from days to minutes and ideas gain a heartbeat. That’s why onsite work is our default.

Typical time on-site: None
HQNew York, New York

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