Senior Software Engineer, Growth

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 5 years, Posh has grown to a team of 65, expanded to 7M+ users, secured $70m in venture funding, and facilitated over $300M in transactions.

About The Role

At Posh, you'll help shape a platform that brings people together through social experiences. Your work will directly impact how event organizers create experiences and how attendees discover and enjoy them.

We're looking for someone who excels in both technical skills and data. As a Growth Engineer at Posh, you will be critical in driving user acquisition, engagement, and retention through innovative and data-driven strategies. As a Growth Engineer, you will be 1 of 2 dedicated technical leaders on our Growth Team, working alongside the Engineering and Product teams to spearhead experimentation and drive impact through fast-paced, innovative projects.

This is an in-person role based in our New York City office in the heart of SoHo. Building live experiences and building with soul are important for our customers, and we believe being and working together as a team is the best way for Posh to feel and achieve this. Events on Posh should be fun, alive, and driven with passion and we want to mirror this in our teams every day!

Key Responsibilities:

• Develop and execute full-stack growth experiments and targeted initiatives across the Posh platform to enhance user acquisition, retention, and engagement.

• Drive experimentation with MVPs, balancing rapid iteration with long-term sustainable growth and developer experience.

• Collaborate with Product & Data to turn early hypotheses into iterative high-impact tests.

• Take a data-oriented approach to everything you build, integrating scalable tracking systems to provide actionable insights to cross-functional stakeholders that empower the broader product roadmap.

• Conduct code reviews and contribute to knowledge-sharing initiatives within the Engineering Team, fostering a culture of growth and collaboration.

Ideal Candidate:

• 5+ years of experience leading complex technical projects with significant business impact

• Proficiency in relevant full-stack technologies (e.g., React, React Native, Typescript, AWS or similar cloud providers, etc.), with experience in either mobile app development or backend systems.

• Strong understanding of growth strategies, experimentation frameworks, and metrics-driven decision-making

• Strong problem-solving skills and a passion for creating products that connect people in the real world

• Experience with A/B testing frameworks or experimentation platforms (e.g., StatSig, LaunchDarkly).

• Strong knowledge of product metrics, funnels, and user lifecycle stages.

• Ability to lead initiatives, mentor others, and communicate effectively across technical and non-technical teams.

• A passion & curiosity for growth and improvement, coupled with the drive to explore innovative approaches that elevate user experiences and product success.

• Bonus: Experience working at fast-paced early stage consumer, social, and/or marketplace companies & has experience working on mobile apps

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