Senior Software Engineer — Full-Stack & Platform

Blooio, Inc.; New York (NY); On-site; USD 140,000 - 190,000; Full time

Job summary

Blooio is hiring a Senior Software Engineer to join the founding team and own significant pieces of the core platform. You will design and scale backend services, APIs, and messaging infrastructure while contributing to frontend features and integrations.

Ideal candidates have 5+ years in SaaS or developer-focused products, strong API design skills, and comfort working closely with founders in a fast-paced startup. Security and performance matter in every decision.

Qualifications

• 5+ years of professional software engineering experience, ideally building SaaS platforms or developer-focused products.
• Strong backend engineering and API design skills with experience in distributed systems.
• Proficiency with modern languages and stacks including JavaScript/TypeScript, Python, and relational databases.
• Experience with Next.js and React is a plus for full-stack contributions.
• Ability to own projects end-to-end in a fast-moving startup environment.

Responsibilities

• Design, build, and maintain scalable backend services, APIs, and core messaging infrastructure.
• Develop features across the customer dashboard, internal tools, and web applications.
• Build REST APIs, webhooks, third-party integrations, and automated workflows.
• Improve system reliability, performance, security, and scalability as usage grows.
• Help design robust, maintainable systems capable of real-time messaging and high-throughput workloads.
• Work directly with founders to translate product requirements into features.
• Write maintainable, well-tested code, conduct reviews, troubleshoot production issues, and improve engineering practices.
• Independently lead projects from design through deployment and maintenance.

Skills

Backend development

Node.js/TypeScript

Python

REST APIs

Distributed systems

Cloud infrastructure

Docker

Next.js

React

PostgreSQL

Tools

Docker

PostgreSQL

CI/CD tooling

Job description

Blooio is a fast-growing SaaS company building the next generation of business messaging infrastructure. Our platform enables businesses to communicate with customers through Apple Messages for Business and other modern messaging channels using powerful APIs, integrations, and automation tools.

We're looking for an exceptional Senior Software Engineer to work directly with our founding team to build and scale Blooio's core platform.

This is a highly technical, hands-on engineering position with significant ownership. You'll work across backend infrastructure, APIs, databases, customer-facing applications, and internal systems.

We're looking for someone who can independently solve complex technical problems, write clean and scalable code, and turn ideas into reliable, production-ready software.

You will have a direct impact on our architecture, product development, and engineering decisions.

Why join Blooio: build technology that directly powers our core product and customer experiences; take responsibility for meaningful features and infrastructure, not isolated tickets; work closely with the founding team and influence technical architecture and product direction; solve complex problems in real-time communication, scalability, integrations, and automation; and help shape the engineering foundation of a rapidly evolving company.

Responsibilities

• Design, build, and maintain scalable backend services, APIs, and core messaging infrastructure.
• Develop features across the customer dashboard, internal tools, and web applications.
• Build REST APIs, webhooks, third-party integrations, and automated workflows.
• Improve system reliability, performance, security, and scalability as messaging volume grows.
• Help design robust, maintainable systems capable of handling real-time messaging and high-throughput workloads.
• Work directly with the founders to turn product requirements into fully functional features.
• Write maintainable, well-tested code, conduct code reviews, troubleshoot production issues, and continuously improve engineering practices.
• Independently lead projects from initial design through development, deployment, and ongoing maintenance.

Qualifications

• 5+ years of professional software engineering experience, ideally building SaaS platforms or developer-focused products.
• Strong backend engineering experience with modern languages such as JavaScript, TypeScript/Node.js, Python, Postgres, and more.
• Experience with modern frontend frameworks such as Next.js and React.
• Strong understanding of REST APIs, webhooks, asynchronous processing, and distributed systems.
• Experience working with relational databases, caching systems, and message queues.
• Familiarity with cloud infrastructure, CI/CD pipelines, Docker, and production deployments.
• Experience designing, building, and maintaining production-grade systems.
• Strong debugging skills, engineering judgment, and attention to performance and security.
• Ability to independently own projects and deliver high-quality work in a fast-moving startup environment.
• Comfortable collaborating directly with founders and taking responsibility for technical outcomes.

Nice to have

• Experience with real-time high-volume event processing, AI integrations, or database architecture.
• Intelligent use of AI for developing.

About Blooio

Blooio is a business messaging platform for sending and receiving Apple Messages for Business, iMessage, RCS, and SMS from CRMs, automations, APIs, and AI agents. We're a small team building the most powerful messaging platform for businesses.