Full Stack Engineer

Syndesus, Inc.; New York (NY); Hybrid; USD 130,000 - 150,000; Full time

Benefits offered by this job

Health benefits

One Medical membership

Peloton Digital membership

Learning & development budget

$150 monthly reimbursement for company

Job summary

Syndesus, Inc. in New York City is seeking a Full Stack Engineer to join a small, high-velocity team building the infrastructure powering our wellness platform.

You’ll ship real features from day one—dashboards, partner tools, and consumer experiences—across the stack with close guidance from the CTO and a Senior Engineer, with 2–4 years of post‑college experience.

Qualifications

• 3-5 years of full-stack engineering experience.
• Strong React skills with production frontend experience.
• Ability to ship UI across frontend and backend.
• Comfort with startup pace and rapid iteration.
• Familiarity with AI-enabled development is a plus.

Responsibilities

• Build partner and consumer experiences across the two-sided marketplace.
• Develop dashboards and internal tools for operators and teams.
• Implement AI-powered workflows and data features leveraging the platform infrastructure.
• Collaborate closely with the CTO and a Senior Engineer to ship features.

Skills

React

TypeScript

Full-stack development

Startup experience

AI tooling familiarity

Tools

Next.js

Google Cloud

Claude Code

Cursor

Job description

Our client is a venture-backed, seed-stage company powering the next generation of wellness businesses with clinical infrastructure built for growth.

They're building a platform that enables wellness businesses to offer clinical services they currently can't provide on their own, including blood testing, prescriptions, and peptides, supervised by a clinical team. Think Shopify for wellness businesses.

The founding team has done this before: Harvard Business School MBAs and a second-time founder, alongside operators and executives who've taken startups through exits as founding-team members. They're backed by top venture capital firms.

The tailwinds are massive: peptides going mainstream, GLP-1s unlocking the category, the longevity movement in full swing, and AI unlocking what wasn't possible a year ago.

This is still an early team, which means every hire matters. You'd join at the ground floor, work directly with the founders, and be part of something rare: a company at the intersection of a massive market shift and the moment when AI is reshaping what small teams can build.

The Role

Our client is looking for a Full Stack Engineer to join a small, high-velocity engineering team building the infrastructure that powers their platform.

You'll ship real features from day one, building dashboards, partner-facing tools, and consumer experiences alongside the CTO and a Senior Engineer. You'll work across the stack, though most of what you'll build lives closer to the front end than pure backend. You'll write code, ship to production efficiently, and grow fast alongside engineers who are voracious about the craft.

This is the right role for someone 2-4 years into their career who wants to level up fast. You'll get real ownership, direct feedback, exposure to modern tooling and infrastructure, and the freedom to grow into a senior engineer over the next few years.

What You'll Build

• Partner and consumer experiences. The wellness operator's control panel, the consumer's clinical experience, everything that makes the two-sided marketplace work
• Dashboards. Partner-facing analytics, consumer-facing progress views, and internal ops dashboards, which is a lot of what the whole team is working on right now
• AI-powered workflows. Features that use MCP and modern agentic frameworks to make the product smarter, plus internal tools that let the team work faster
• Data-driven features. The data infrastructure was built for AI and analytics from day one, and you'll build features that leverage it

The Stack

• Frontend: React, TypeScript, Next.js
• Cloud & infra: Google Cloud, including the Healthcare API
• AI tooling: Claude Code and next-generation agentic dev environments
• CI/CD: Modern pipeline with lints, checks, AI code review, and feature-flagged deployments

The team stays current on the stack and invests in tooling so you can focus on shipping.

Requirements

Who You Are

• 3-5 years of full-stack engineering experience, ideally at a startup or fast-moving team
• Strong React skills. You've shipped real production frontends and you know your way around TypeScript, component architecture, state management, and modern build tooling
• Full-stack comfort. You can work across the stack: build the frontend, wire up the API, work with the database. Front-end leaning is fine, back-end leaning is not (they need you shipping UI)
• AI-native. You use Claude, Cursor, or equivalent AI tools daily. You're not skeptical of AI coding, you're getting fluent with it because you know it's leverage
• Comfortable with startup pace. This team moves fast, ships often, and iterates. If you're coming from a slower environment, that's fine, but this role isn't a good fit if you want to move at big-company pace
• Fast and hungry. You want to ship, learn, and grow. You're excited by the idea of getting reps at 3x the pace of a bigger company
• E-commerce or marketplace background is a plus but not required. If you've built two-sided products, transaction flows, or seller/buyer experiences, tell us

What Matters Less

• CS degree. Not required if you can do the work. Self-taught, bootcamp, and non-traditional paths are all welcome
• Domain expertise. They'll teach you what you need to know about wellness and clinical operations. What they care about is the engineering and the pace

What You'll Get

Beyond the standard startup pitch, a few things that actually differentiate this seat:

• Modern AI-native tooling. You'll code with Claude Code and the latest agentic dev environments. If you're excited to work at the frontier of how engineers ship in 2026, this is that seat
• Data infrastructure built for AI from day one. You'll build features that leverage that foundation and work with MCP and agentic frameworks as part of the product, not as a side project
• A codebase that respects your time. The team stays current on the stack, invests in tooling, and ships to production efficiently
• A team that levels each other up. Everyone here reads technical papers, watches conference talks, and shares what they learn. An annual learning budget backs it up

Logistics

• Location: New York City
• Schedule: Hybrid, 3 days in-office, remainder remote
• Reports to: CTO
• Base salary: $130,000 to $150,000, depending on experience
• Equity: Meaningful early-employee equity grant
• Health benefits: Medical, dental, and vision (100% covered)
• One Medical membership
• Peloton Digital membership
• Learning and development budget
• $150 monthly reimbursement for the company's products

Why This Role

This is a seat on a small engineering team at a company with real momentum, modern tooling, and a stack that respects your time. You'll ship faster here than at most companies, learn faster because of the people around you, and have direct proximity to the founders and the product decisions that matter.

If you're 2-4 years into your career and want to grow into a senior engineer, with the reps, the mentorship, and the equity to make it worth it, this is that role.