Kingfisher Company Inc. is seeking a hands-on Lead Software Engineer to take ownership of and advance the web application platform deployed on AWS. The role combines full-stack development, serverless design, and people leadership, with a focus on real-time monitoring and control of emergency communications devices and AWS IoT integration.

Responsibilities

Take ownership of the web application platform and guide its technical direction
Lead a small software team while remaining hands-on with development
Design, build, and maintain full-stack web applications using React, JavaScript, Node.js, and AWS
Work on applications that support real-time monitoring and control of emergency communication equipment
Make decisions around application architecture, data flow, APIs, deployment, monitoring, and maintainability
Help prioritize technical work and balance product needs with long-term engineering quality
Work with AWS services such as Lambda, API Gateway, DynamoDB, CloudWatch, and IoT Core
Build features that interact with physical devices using MQTT, AWS IoT, or related technologies
Improve software development practices, including code reviews, testing, documentation, and deployment workflows
Mentor junior and mid-level engineers as the software team grows

Requirements

5+ years of professional software development experience
Experience leading technical work or guiding a small engineering team
Strong experience building and supporting production web applications
Strong JavaScript / TypeScript experience
Professional experience with React or a similar frontend framework
Backend experience with Node.js or similar server-side technologies
Experience designing and working with APIs
Experience with AWS or similar cloud platforms
Strong experience with IaC such as CloudFormation / Terraform
Good understanding of application architecture, maintainability, security, and reliability
Ability to work independently, make technical decisions, and take ownership of a product area
Bachelor's degree

Technologies

React
JavaScript
TypeScript
Node.js
AWS
Lambda
API Gateway
DynamoDB
CloudWatch
IoT Core
MQTT
AWS IoT
CloudFormation
Terraform
IAM
WebSocket

Benefits

Competitive salary
Comprehensive benefits package
Opportunity to work on cutting-edge technology in a collaborative, small-team environment
Take on a critical role with significant responsibility

About us

Kingfisher Company Inc. (KCi) is a small, innovative electronics design and manufacturing company specializing in emergency communication equipment for the fire alarm industry. We are seeking a hands-on, highly motivated Lead Software Engineer to join our team. This position plays a critical role in ensuring the quality, efficiency, and reliability of our products, from design validation through production.

Location

Lowell, MA 01854 • On-site. Relocation not available.

Salary

USD 100,000 - 155,000 per year

Lead Software Engineer

Job Description