Senior Fullstack Engineer

Siro is the intelligence platform for in-person sales. We record, transcribe, and analyze the millions of in-person conversations happening every day - a dataset never before captured - to help sales people.

You may be surprised to learn that of the millions of sales professionals in the U.S., the majority work in-person, face-to-face. Think of HVAC contractors, medical device salespeople, or real-estate agents. And while top-performers can out-earn surgeons, most do not reach their potential because it is almost impossible to get on-the-job coaching when you're alone in the field.

Siro gives sales reps data-driven coaching, actionable insights, and peer-to-peer learnings. Soon Siro's intelligence platform will power business use cases across strategy, marketing, customer success, and more. Our technology can serve any scenario where front-line, face-to-face conversations drive business outcomes.

With a $5B+ TAM and over $25M in backing from world-class investors, we're on a mission to make field sales the most accessible path to financial freedom.

Our product is already making waves - with 4.8 stars on the App Store (700+ ratings), 5.0 stars on G2 (25 reviews), and partnerships with industry leaders like ServiceTitan (NASDAQ: TTAN).

We're looking for exceptional engineers to join our team and help scale our impact.

Key Responsibilities

Own the end-to-end development of key features, from architectural decisions through implementation and deployment Craft intuitive, performant user interfaces that make complex AI insights accessible to our users Design and build scalable backend services that handle real-time processing of sales conversations Drive technical excellence through thoughtful code reviews, documentation, and engineering best practices Partner closely with product and design teams to transform customer needs into elegant technical solutions Help evolve our development practices and tooling to enable sustainable scaling while maintaining velocity Additional Staff-Level Impact:

Lead technical architecture for major initiatives, serve as a trusted mentor to the team, and drive engineering-wide improvements. You'll help shape our technical strategy and be a key voice in decisions that affect our entire engineering organization, from developer productivity to system reliability. Requirements You have

5+ years of professional software engineering experience You demonstrate strong proficiency in

TypeScript frameworks You have experience with

Node.js and REST API design You are knowledgeable about

cloud platforms (preferably GCP ) and serverless architectures You have demonstrated skill in

web performance optimization You have experience with

version control systems

(preferably Git) and CI/CD pipelines You are an

exceptional problem solver , with the ability to think critically and approach challenges with a first-principles mindset. You have

strong communication skills , able to articulate complex technical concepts to both technical and non-technical stakeholders. Staff-level: You have deep expertise in frontend architecture and optimization Our Tech Stack Frontend: React Native, TypeScript, Svelte Backend: Node.js, Typescript, serverless functions Cloud: Google Cloud Platform Other tools: Git, Datadog, Figma Why Join Siro? Growth: Join a rapidly scaling Series A startup with proven product-market fit Technology: Work with cutting-edge AI technologies and a modern tech stack. Team: Collaborate with an experienced CEO and top-tier team Ownership: Take end-to-end ownership of features that directly impact our users Learning: Work across the full stack and grow your technical breadth Impact: Help democratize sales success and create opportunities for millions of sales professionals What Sets You Apart You have a track record of meaningful side projects or open-source contributions, showcasing your passion for software development. You're a collaborative team player with a "we before me" mindset, always ready to support and elevate your colleagues. You have high standards for excellence and aren't afraid to voice your opinion to push for quality. You think strategically beyond code, considering business and design implications in your work. You're organized and adaptable, thriving in an agile environment with low management overhead. You're creative and can think outside the box to solve complex problems in innovative ways. Compensation & Details We use highly competitive benchmarks to determine equity grants Cash is based on 75th percentile Pave benchmarks for our size/scale, Tier 1 cities, and leveling of the hire. Senior Software Engineer: $200,000 or $216,000 Staff Software Engineer: $243,000

We are in-person Tues/Wed/Thurs at our office in Flatiron (New York City) We do not sponsor H1B visas

At Siro, we are committed to creating a diverse and inclusive environment where all people feel that they are equally respected and valued, whether they are applying for an open position or working at the company. We provide equal employment opportunities to all applicants without regard to race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.