Staff Software Engineer, Backend

Posted 23 Days Ago
Be an Early Applicant
New York City, NY, USA
In-Office
250K-300K Annually
Senior level
Events • Social Media • Software
Maximizing IRL human connection for the world
The Role
The Staff Backend Engineer will lead technical direction across backend systems, write production code, improve scalability, and mentor engineers.
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 8M+ users, secured $70m in venture funding, and facilitated over $350M in transactions.

About The Role

At Posh, you'll set the technical direction for our backend systems. As Staff Backend Engineer, you own architecture across multiple services, drive platform improvements, and ship production code yourself.

Staff at Posh means breadth and depth. You'll make architectural calls that affect multiple teams, not only your own squad. You'll raise the bar through design reviews, code review, mentorship, and technical leadership across functions. And you stay close to the work — implementation matters as much as architecture at this level.

This is an in-person role at our New York City office in SoHo.

Key Responsibilities:
  • Own backend architecture across multiple services and team boundaries, from design through implementation.

  • Write production code daily and set the standard on quality, reliability, and engineering practice.

  • Partner with engineering leads and product managers to scope large initiatives and define what "done" actually means.

  • Improve scalability, performance, and reliability as the platform grows.

  • Identify and clear technical debt across teams, not only within your immediate scope.

  • Build security and observability into systems from day one rather than bolting them on later.

  • Build with data in mind: instrumentation, pipelines, and tooling that surface meaningful insight for organizers and the business.

  • Mentor engineers across levels and shape technical culture through reviews, design discussions, and direct coaching.

  • Help us hire well — participate in technical interviews and calibration.

Ideal Candidate:
  • 8+ years of backend engineering experience, including time as a Staff, Principal, or technical lead.

  • Has designed and delivered systems that span multiple services or teams with clear ownership of the outcome.

  • Deep expertise in backend systems: APIs, data modeling, distributed systems, event-driven architecture. Strong working knowledge of the full stack.

  • Proficient in technologies relevant to our stack (e.g.,Java, Node.js, PostgreSQL, MongoDB AWS or similar cloud providers).

  • Has scaled platforms operationally, not just designed them on paper. You've watched performance regress under load, run incidents, and evolved architecture that was already in production.

  • Pragmatic about technology choices. You pick the right tool for the problem and can defend the tradeoff.

  • Communicates technical tradeoffs clearly to engineers, product, and business leaders.

  • Mentors and raises the engineering bar for the people around them.

  • Experience at a consumer, social, or marketplace company is a plus — those are the users we build for.

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

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

  • 8+ years of backend engineering experience
  • Experience as a Staff, Principal, or technical lead
  • Deep expertise in backend systems: APIs, data modeling, distributed systems, event-driven architecture
  • Proficient in Java, Node.js, PostgreSQL, MongoDB or similar
  • Experience scaling platforms operationally
  • Ability to mentor engineers

Posh Compensation & Benefits Highlights

  • Healthcare Strength Company materials indicate 100% employer-paid medical, dental, and vision premiums for employees and dependents, plus company-paid short- and long-term disability. This points to comprehensive coverage that lowers employee out-of-pocket costs.
  • Wellbeing & Lifestyle Benefits Daily Uber Eats credits for in-office days, a fully paid Equinox membership near the SoHo HQ, weekly catered lunch, and regular team dinners/off-sites are highlighted. These day-to-day perks add tangible value for those working on-site.
  • Equity Value & Accessibility Careers materials emphasize competitive equity for full-time employees and reiterate ownership as part of the package. Equity refreshers are also referenced as a standard practice over time.

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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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