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Senior Software Engineer, Backend

Posh, New York City

Posted pay

$200K–$225K

a year

Location: New York City
Work type: Onsite
Level: Senior
Experience: 5+ years
Skills in the job text: AWS
Java
Terraform
PostgreSQL
Node.js
MongoDB
Posted: Aug 18, 2026
Last check: 7 h ago
Job type: Software engineering

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Posh

About Posh: funding, hiring and pay

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The role

We're looking for a Senior Backend Engineer to help build and scale the systems behind Posh's platform. You'll take ownership of backend services already running at real scale, with organizers and attendees on the other end of everything you ship.

This is a hands-on IC role. You'll design APIs and services, make architecture calls that hold up under load, and push code quality up across teams beyond your own. You'll also mentor engineers earlier in their careers.

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

What you will do

Build and maintain the services and APIs that power Posh's platform, writing production code daily.
Take end-to-end ownership of the backend systems you work on, from design through deployment and on-call.
Address performance and reliability issues as usage grows, evolving systems already in production rather than designing around problems on paper.
Instrument what you build and design security in from the start rather than adding it later.
Build data models and pipelines that give organizers and the business actionable insight.
Contribute to design reviews and code review outside your immediate scope, and weigh in on technical decisions that affect other teams.
Mentor engineers earlier in their careers through code review, pairing, and direct feedback.
Participate in technical interviews and calibration.

What you need

5+ years of backend engineering experience, with a track record of shipping production systems in fast-paced environments.
Deep expertise in backend fundamentals: APIs, data modeling, distributed systems, event-driven architecture.
Proficient in technologies relevant to our stack (e.g., Java, Node.js, PostgreSQL, MongoDB, AWS or similar technologies).
Experience with Infrastructure as Code (e.g., Terraform) and deploying containerized applications.
Has scaled systems operationally, not just designed them on paper — you've watched performance regress under load and evolved architecture that was already live.
Pragmatic about technology choices, and able to defend the tradeoffs you make.
Communicates technical tradeoffs clearly to engineers, product, and business stakeholders.
Experience at a consumer, social, or marketplace company is a plus.

When applying, please include links to your GitHub profile or a portfolio of past projects.

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.

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.

Legal notes

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.

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

Read the job posting on the Posh site

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Source: the Posh Ashby job board. We last checked this job 7 h ago. We first saw it 4 days ago. A job on a job board does not always mean that the team interviews people now. We found this job board in a public list. We did not yet compare it with the careers page of the company.

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Posh

Open tech jobs: 6
With posted pay: 100%
Median posted base: $200K–$225K

About Posh: funding, hiring and pay

Compared with similar jobs

This base pay is near the median for senior software engineering jobs in New York.

Median: $207K a year
Other jobs in the group: 655

We compare the middle of each posted range. This is base pay as posted. The group does not include this job.