Senior Full-Stack Engineer - AI-Driven SaaS & Data

allwhere

New York (NY)

Hybrid

USD 150,000 - 190,000

Full time

14 days+

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Benefits offered by this job

Equity

Office NYC

Hybrid work

Job summary

allwhere in New York, NY, is seeking an innovative Full Stack Engineer to accelerate product and systems development in a fast-paced startup. You will own architecture, build scalable SaaS APIs, and drive AI-led systems development while collaborating across product and business teams.

You will mentor teammates, review code, and help shape the technology vision as the team grows, with in‑office presence 2 days per week in NYC.

Qualifications

BS in CS or Engineering; MS a strong plus.
5+ years of full stack development; 9+ years total software dev.
3+ years in Series A/B SaaS B2B high growth startup.
Deep expertise in React, JS, Node/Nest.js, REST, GraphQL, SQL and NoSQL.
Experience with high performance SaaS APIs in AWS on ECS; AWS ecosystem knowledge.
Experience with EKS, GCP is a strong plus; Sentry.io is a plus.
Proficiency with Agentic AI and related tooling; Figma is a plus.
Strong design patterns, UML, architecture, and DX focus.
Performance, security, observability and reliability testing experience.

Responsibilities

Architect and implement high‑quality features in a fast‑paced startup environment.
Leverage AI tools to accelerate development and ensure safe AI agent contexts.
Lead front‑end and back‑end lifecycle testing, performance and reliability.
Mentor engineers, participate in code reviews, foster team excellence.
Collaborate with product and business units to discuss feasibility of features.
Help shape technology vision and drive scalable, secure SaaS APIs.