Senior Software Engineer

Flip • New York, NY

4h • $150,000 - $200,000 • Onsite

About The Position

Flip is leading the next wave of innovation in customer support: AI-powered call automation. While it’s clear that automating support calls is inevitable and imminent, current market adoption remains under 1%. Flip is ahead of the curve, emerging as the category leader across E-Commerce/Retail, Healthcare, and Transportation.
Flip integrates with a client's tech stack to personalize every call and resolve issues quickly, creating a seamless, branded experience that enhances customer satisfaction and loyalty. Flip continuously evolves through millions of real customer conversations, delivering human-level understanding and handling with exceptional precision.
We are in-office, with spaces in NYC, LA, and the UK. If you enjoy being an owner-operator, love hacking your way through seemingly intractable hurdles, and hold an extremely high level of integrity for product quality and service, then this is the place for you.
At Flip, Senior Software Engineers are technical owners who design, build, and scale the systems that power our AI-driven voice platform. You will lead the development of high-impact features, architect scalable services, and own end-to-end pipelines that deliver low-latency, high-availability conversational experiences for our customers.
You’ll work deeply across product, data, infrastructure, and customer-facing systems—partnering closely with Product, Customer Success, and fellow engineers to shape technical direction, improve reliability, and push the platform forward.

Requirements

• You hold a BS in Computer Science, Engineering, Mathematics, or a related technical field (or equivalent experience).
• You have a minimum of 7+ years of professional software engineering experience, with at least 4 years of deep expertise in Python.
• You have strong experience with: Async Python (asyncio), concurrency, and performance optimization
• Advanced object-oriented design (dataclasses, inheritance, composition)
• Modern backend frameworks such as FastAPI
• Designing and consuming REST APIs and authentication systems (OAuth2, JWT, etc.)
• You have experience building and operating production systems at scale.
• You understand metrics, logging, and monitoring pipelines, and have used tools like Grafana, Looker, Tableau, Omni, or similar.
• You communicate clearly with both technical and non-technical stakeholders.
• You enjoy mentoring teammates and raising the bar for those around you.

Nice To Haves

• Designing, fine-tuning, or deploying LLM-based systems in production
• Building real-time voice, speech-to-text (STT), and text-to-speech (TTS) pipelines
• Experience with Pipecat or similar voice and streaming frameworks
• Strong experience with AWS and/or GCP, Kubernetes, CI/CD, and infrastructure-as-code
• Experience scaling early-stage startup systems into production-grade platforms
• Comfort working onsite in NYC or LA, closely partnering with Engineering, Product, and Customer Success

Responsibilities

• Own the design, implementation, and evolution of core backend services and pipelines.
• Architect and optimize Python-based systems that integrate with external APIs, LLM platforms, and real-time voice services.
• Design and maintain scalable, fault-tolerant workflows for dialogue management, orchestration, and conversation flows.
• Build and optimize low-latency, high-throughput systems supporting millions of calls per week.
• Lead technical design discussions, propose architectural improvements, and influence long-term platform strategy.
• Set engineering best practices for code quality, testing, observability, and reliability.
• Conduct high-signal code reviews and mentor junior and mid-level engineers.
• Debug and resolve complex production issues across distributed services and third-party integrations.
• Partner directly with customers, product managers, and operations teams to translate business requirements into robust technical solutions.

Benefits

• Comprehensive healthcare
• Unlimited vacation, including a mandatory half week for everyone over July 4, and a full week off at the end of the year.
• This role is also eligible for equity, in accordance with company policy, and subject to board approval.

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level