Senior Full-Stack Engineer — End-to-End POS, Hybrid

Merilsoft; Melville (NY); Hybrid; USD 120,000 - 160,000; Full time

Job summary

Merilsoft in Melville, NY is seeking a Senior Full-Stack Engineer to own features end to end—from schema and API design to UI and production monitoring. You’ll move between product work, infrastructure, and client engagement, delivering value quickly in a hybrid environment with real transaction processing.

You’ll thrive if you have several years building and running web applications with responsibilities across database, API, and browser layers, and you can judge when to generalize versus

Qualifications

• Several years of building and running web applications that you stayed responsible for after launch.
• Comfort across a database, an API and a browser — you should not need somebody else to change a query.
• The judgement to know when a problem deserves a general solution and when it deserves the smallest one that works.

Responsibilities

• Take features from a described problem to production: schema, API, interface, and the operational work of watching it behave once real orders are going through it.
• Move between product work, infrastructure and client engagement in a small team building a POS, an EHR, a fleet system and client software.

Skills

Full-stack development

Database

API design

Web UI

Tools

PostgreSQL

REST APIs

JavaScript/TypeScript

React/Node

Job description

Merilsoft in Melville, NY is seeking a Senior Full-Stack Engineer to own features end to end—from schema and API design to UI and production monitoring. You’ll move between product work, infrastructure, and client engagement, delivering value quickly in a hybrid environment with real transaction processing.

You’ll thrive if you have several years building and running web applications with responsibilities across database, API, and browser layers, and you can judge when to generalize versus