Senior Software Engineer

About Interface.aiinterface.ai is redefining how financial institutions serve their members through agentic AI and conversational AI — and we're doing it in production, at scale, with real outcomes. $30M in Series A funding. Cash-flow positive. A mission that matters: democratizing financial wellness for every American, not just the ones who can afford a private banker.THE OPPORTUNITYAs a Senior Software Engineer, you're not just writing code — you're setting the technical direction for the systems you own. You'll work directly with our VP of Engineering, CTO and Co-Founder Bruce Kim, and CEO Srinivas Njay in a collaborative, in-person environment where the best ideas win and shipping is the scoreboard.This role is for the engineer who has seen what "going fast" actually costs, knows how to build systems that hold up, and still gets things out the door.What You'll Work OnLead the design and implementation of platform services — scalable, observable, and maintainable systems that power our AI productsOwn technical decisions end-to-end: architecture, APIs, data models, performance, and securityBuild and extend backend systems in TypeScript and Python; shape frontend experiences in JavaScriptDrive the integration of LLM-based and agentic AI capabilities into production systems — this is applied AI engineering, not researchDefine and enforce engineering standards: code review, testing strategies, deployment practices, and incident responseEmbed AI-native tooling (Claude Code, Cursor) into your daily workflow and help the team get better at itWork side-by-side with product, design, and data — in the office, in real time, every dayWhat We're Looking For5+ years of software engineering experience with a track record of shipping impactful, production-grade systemsA portfolio of work you led, not just contributed to — you can walk through design decisions, trade-offs, and outcomesDeep proficiency in TypeScript and/or Python; solid JavaScript for frontend contributionsStrong platform engineering instincts: distributed systems, API design, cloud architecture (AWS/GCP), observabilityFluent in AI/ML engineering: you've built on top of LLMs, understand prompt engineering, and know where AI adds value — and where it doesn'tExperience designing systems under real constraints — latency, reliability, cost, and scaleBS/BA in Computer Science; graduate degree a plus (we take fundamentals seriously)Self-directed and decisive: you identify problems before they're assigned, propose solutions before they're requested, and close loops without remindersIn SF, committed to 5 days/week — the collaboration is real and intentionalBONUS POINTSProduction experience with conversational AI, dialogue systems, NLP pipelines, or agentic architecturesBackground in fintech, banking infrastructure, or regulated financial environmentsExperience being an early engineer at a startup that shipped successfullyBenefits:💡 100% paid health, dental & vision care💰 401(k) & financial wellness perks🌴 Discretionary PTO + paid parental leave🧠 Mental health, wellness & family benefits🚀 A mission-driven team shaping the future of bankingWHY INTERFACE.AIYou'll have real ownership, real influence, and real colleagues. We're past the existential phase — customers are live, revenue is real, and the problem we're solving is genuinely hard and genuinely important. If you want to be a cog in a machine, this is the wrong place. If you want to be the engineer who shapes how an AI company scales its platform, keep reading.Compensation Range: $232,030 - $240,689