> Markdown version of [/jobs/ext/4625008-software-engineer-platform](https://www.wearedevelopers.com/jobs/ext/4625008-software-engineer-platform). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Software Engineer, Platform - **Company:** RILLET, LLC - **Location:** New York, NY, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Application Programming Interfaces (APIs), Artificial Intelligence, Amazon Web Services, Audit Trail, Continuous Integration, Programming Tools, Distributed Systems, Financial Software, PostgreSQL, Svelte, Security Assertion Markup Language (SAML), Software Engineering, TypeScript, Datadog, Spring-boot, Backend, Kotlin, Front End Software Development - **Published:** November 7, 2026 - **Apply:** https://www.juju.com/job/28_25197_5a586452812a0bcb4566c830248c74b9 ## About the Role * 5+ years of software engineering experience with a track record on complex, large-scale projects * Deep expertise in AWS - this is our primary cloud and you'll own it * Hands-on experience with CI/CD, observability tooling, and distributed systems * Comfortable making technical decisions and navigating hard tradeoffs at whatever scope your role demands * Energized by building in a fast-moving environment where the playbook is still being written, * Experience building or maintaining third-party integrations (ERP, fintech, or similar) * Background in fintech, ERP, or accounting software * Experience owning and scaling public-facing APIs * Familiarity with enterprise readiness (SOC 2, SSO/SAML, audit logging, or similar) * Kotlin, Java, or TypeScript experience * Prior experience at a high-growth startup ## Description Experienced engineers who've made infrastructure a competitive advantage - not just reliable plumbing. You've owned the systems that let product teams ship with confidence, you think in tradeoffs, and you care deeply about how a team builds, not just what ships. We're building industry-defining accounting and finance software. Our platform needs to scale with us, and we want an engineer who brings a point of view to that work. Our Tech Stack: Svelte 5/TypeScript frontend, Kotlin + Spring Boot backend, PostgreSQL, AWS. We're AI-native - meaning thoughtful application, not outsourced thinking. Our engineers still reason from first principles; AI helps with execution. We're looking for teammates within commutable distance of our NYC or SF offices (or willing to relocate). The team works in-office Tuesdays and Thursdays, plus one additional flexible day. What You'll Do * Own the infrastructure, CI/CD, and developer tooling that keeps our engineering team shipping fast and safely at scale * Set the technical direction for reliability, security, and compliance - building these in from the ground up rather than bolting them on later * Shape the design and scalability of our external API, turning it into a competitive asset for customers and partners * Partner with engineering leadership to define roadmap priorities and translate ambiguous problems into clear technical plans * Raise the bar for engineering quality through design reviews, mentorship, and hands-on collaboration