Senior Software Engineer

Worky; United States; On-site; USD 120,000 - 180,000; Full time

Job summary

Voxie is expanding its backend to power a conversation-driven SMS platform for franchises. The Senior Software Engineer will own integrations with CRMs, POS, marketing tools, and messaging providers, and will build scalable, testable backend systems in PHP and TypeScript.

You will work with sales engineers and customer teams to scope, validate, and deliver robust integrations, while advancing our cloud architecture and CI/CD practices to support high-volume messaging at scale.

Qualifications

• 5+ years of professional backend development experience with PHP (Laravel), TypeScript, or similar.

Responsibilities

• Design, build, and maintain integrations with third-party platforms using REST APIs, webhooks, SFTP, and batch data pipelines.
• Turn ambiguous requirements into working systems by gathering inputs from sales and partner teams.
• Collaborate with customers' engineering teams to scope, validate, and troubleshoot integrations.
• Handle high-throughput messaging workloads with attention to rate limits, retries, and failure recovery.
• Design, develop, and maintain backend systems in PHP and TypeScript.
• Extend distributed systems for reliability, scalability, and cost efficiency.
• Use AI tools to accelerate delivery and automate processes end to end.
• Write maintainable code that humans and AI can understand.

Skills

PHP Laravel

TypeScript

APIs & Integrations

High-volume messaging

Distributed systems

AWS (Lambda, RDS, DynamoDB, SQS, SNS)

CI/CD pipelines

AI coding tools

English communication

Tools

AWS

JUnit/PHPUnit

Jest

GitHub Actions

Job description

At Voxie, we believe conversation is the future. We've created the only SMS platform purpose-built for franchises, helping national brands drive local results across 15,000+ locations. Our AI-enhanced texting solution transforms how multi-unit businesses engage customers, drive sales, and stay compliant all with a few clicks.

Role Overview

The Senior Software Engineer builds and owns the integrations that connect Voxie's conversationalplatform to the systems our customers run their businesses on: CRMs, POS platforms, marketing tools,and messaging providers. This is a backend-focused role for an engineer who can take a roughintegration requirement, ask the right questions, and ship a system that holds up at high messagevolume. You will scope work directly with our sales engineers and solutions engineers, with third-partyplatform teams, and at times with a customer's own technical staff. Strong communication matters hereas much as strong code.

What You'll Be Doing

Integration Engineering

• Design, build, and maintain integrations with third-party platforms using REST APIs,webhooks, SFTP, and batch data pipelines.
• Turn ambiguous requirements into working systems: gather what you need from salesengineers, solutions engineers, and partner platform teams, then build it.
• Work directly with third-party providers and customers' engineering teams to scope,validate, and troubleshoot integrations.
• Handle high-throughput messaging workloads with careful attention to rate limits,retries, idempotency, and failure recovery.

Software Development & Architecture

• Design, develop, and maintain high-quality, testable, scalable backend systems in PHPand TypeScript.
• Extend our distributed systems architecture for reliability, scalability, and costefficiency.
• Use AI tools to accelerate delivery and automate processes end to end, so your timegoes to high-value orchestration and reliability work.
• Write code that both humans and AI agents can understand, modify, and extend.

Cloud & Infrastructure

• Build serverless and distributed solutions on AWS (Lambda, RDS, DynamoDB, SNS, SQS).
• Design systems for security, resilience, and operational efficiency.
• Contribute to infrastructure-as-code and CI/CD automation.

Collaboration & Process

• Participate in Agile ceremonies and contribute to scoping and design discussions.
• Partner with Product, Sales, and Customer Success to deliver integrations that closedeals and keep customers.
• Provide mentorship and code reviews that raise the team's engineering standard.

Quality & Testing

• Build and maintain automated test suites with PHPUnit, Jest, and GitHub Actions.
• Hold the line on testing, code review, and monitoring.

What We're Looking For

Must Haves

• 5+ years of professional backend development experience with PHP (Laravel), TypeScript, orsimilar.
• Proven experience building and maintaining third-party integrations: REST APIs, webhooks,OAuth, SFTP, and batch data exchange.
• Experience with high-throughput or high-volume messaging systems.
• Solid understanding of distributed systems, API design, and database design.
• Working knowledge of AWS, particularly Lambda, RDS, DynamoDB, SQS, and SNS.
• Experience with automated test frameworks and CI/CD pipelines.
• Practical use of AI coding tools to ship faster, with the judgment to know where they help andwhere they don't.
• Strong communication skills: comfortable gathering requirements from non-engineers andspeaking directly with customer technical teams.
• Our primary language is English, but we speak Portuguese, Spanish, Ukrainian, and French, so far!

Preferred

• Experience at, or integrating deeply with, CPaaS platforms such as Twilio, Sinch, Vonage, orBandwidth.
• Background in telecom or SMS infrastructure (10DLC, carrier compliance, deliverability).
• Cybersecurity experience.
• Serverless architecture experience.
• Enough frontend fluency (Vue.js, Tailwind) to build and maintain internal integration toolingand dashboards without waiting on another team.