Senior Backend Software Engineer Job in Boston

Kelly Services; Boston (MA); On-site; USD 220,000 - 250,000; Full time

Benefits offered by this job

Bonus or Commission eligible

Medical Insurance

Dental Benefits

Vision Benefits

Paid Time Off (PTO)

401(k) including match

Job summary

Kelly Services is seeking a Senior Backend Software Engineer in the Boston area to help build out an AI-driven CRM platform. You will own backend architecture, API development, and data modeling to support scalable customer workflows.

The role requires strong experience with Node.js, TypeScript, PostgreSQL, and multi-tenant SaaS design, along with prior technical leadership experience. The position offers robust benefits and a fast-paced startup environment.

Qualifications

• Strong backend architecture and system design experience.
• Experience with Node.js, TypeScript, and PostgreSQL.
• Experience with SaaS platforms, multi-tenant architectures, and scalability.
• Time spent in technical leadership roles (tech lead, staff engineer, or equivalent).

Responsibilities

• Lead backend architecture and development for core platform initiatives.
• Scale and enhance the API platform, including performance, versioning, and multi-tenant capabilities.
• Design and develop scalable backend systems and customer-facing platform features.
• Build and maintain core engineering frameworks and platform services.
• Explore and implement AI-powered product capabilities.
• 100% Hands On.

Skills

Backend architecture

System design

Node.js

TypeScript

PostgreSQL

SaaS platforms

Multi-tenant architecture

Leadership roles

Education

BS in Computer Science

MS preferred

Tools

Node.js

TypeScript

PostgreSQL

Database design

Job description

$220000 - $250000

Job Description

A growing CRM startup company is looking to hire a Senior Backend Software Engineer to help build out and improve their AI driven modern CRM platform. You’ll work on their backend work streams, API platform, core data model, and systems that lead the way for new product capabilities.

In this role, you’ll help build external API platforms, ship new AI-driven capabilities, build new applications in Node, and design data model and system architecture to support their increasingly complex customer workflows.

Required Skills & Experience

• Strong backend architecture and system design experience

• Strong experience with Node.js, TypeScript, PostgreSQL, database design, and backend scalable solutions

• Strong experience with SaaS platforms, multi-tenant architecture, and scalability

• Time spent in technical leadership roles (tech lead, staff engineer, or equivalent)

Desired Skills & Experience

• 8+ years of experience building and scaling backend systems

• BS in Computer Science (MS preferred) or a relevant field

• Ability to communicate clearly and make practical tradeoffs

What You Will Be Doing

Daily Responsibilities

• 100% Hands On

• Lead backend architecture and development for core platform initiatives

• Scale and enhance the API platform, including performance, versioning, and multi-tenant capabilities

• Design and develop scalable backend systems and customer-facing platform features

• Build and maintain core engineering frameworks and platform services

• Explore and implement AI-powered product capabilities

The Offer

• Bonus OR Commission eligible

You will receive the following benefits

• Medical Insurance

• Dental Benefits

• Vision Benefits

• Paid Time Off (PTO)

• 401(k) {including match – if applicable}

Applicants must be currently authorized to work in the US on a full-time basis now and in the future.

Motion Recruitment Partners (MRP) is an Equal Opportunity Employer. All applicants must be currently authorized to work on a full-time basis in the country for which they are applying, and no sponsorship is currently available. Employment is subject to the successful completion of a pre-employment screening. Accommodation will be provided in all parts of the hiring process as required under MRP’s Employment Accommodation policy. Applicants need to make their needs known in advance.