Source Job

• Design, build, and maintain highly available, scalable, and secure blockchain products, systems, and infrastructure.
• Collaborate with cross-functional teams to improve infrastructure, monitoring, automation, and incident response.
• Research emerging trends in web3/blockchain and identify new product opportunities.

Galaxy is a global leader in digital assets and data center infrastructure, delivering solutions that accelerate progress in finance and artificial intelligence. The company is headquartered in New York City, with offices across North America, Europe, the Middle East, and Asia, and blends deep crypto expertise with institutional experience.

• Build features, fix bugs, and gradually take on more ownership as you learn the product.
• Work with React, Typescript, NestJS, Python, and AWS.
• Leverage AI tools to move fast and learn faster alongside senior engineers.

Cello is the Revenue Growth Infrastructure for modern digital businesses, turning word-of-mouth into a systematic, measurable growth channel. They are a small, remote-first team of serial founders and operators from companies like Twilio, Wise, and Skype, with $10.3M raised and 30+ new customers every month.

• Build features, fix bugs, and gradually take on more ownership as you learn the product.
• You'll work alongside senior engineers who'll help you grow, but we won't spoon-feed you either.
• You'll use AI tools heavily in our workflow - you'll be expected to leverage them to move fast and learn faster.

Cello provides the Revenue Growth Infrastructure for modern digital businesses. They help teams acquire, retain, and monetize customers at scale by turning word-of-mouth into a systematic, measurable growth channel built for the AI era. They are a small team backed by $10.3M in funding from top-tier investors.

• Design and deliver end-to-end full stack products including consumer apps, developer tools, and internal systems.
• Build and maintain high-performance backend services and APIs for large-scale decentralized applications.
• Create developer-facing tools such as SDKs, CLIs, and libraries to improve ecosystem adoption.

This company is a decentralized technology ecosystem building user-facing applications and core infrastructure. It is a fast-paced, innovation-driven environment where engineers own features across the full lifecycle.

• Build and maintain backend services and full-stack features
• Develop scalable APIs and systems handling high-volume traffic
• Improve system performance, reliability, and security

Lavendo partners with startups and high‑growth companies to help them hire top‑tier sales, go‑to-market, and technical talent. At Lavendo, they partner with clients who care about building high‑performing, inclusive teams, and they hold themselves to the same standard.

• Build full-stack applications with TypeScript, React, Python, and Go.
• Collaborate with product, design, and customers to solve real-world problems.
• Develop AI-powered developer tools and operate in mission-critical environments.

Istari Digital builds modern web applications, developer tools, and AI-powered workflows for aerospace and defense customers. Their remote team focuses on delivering secure, high-performance systems for mission-critical environments.

• Own end-to-end security reviews across smart contracts, backend services, and frontend surfaces.
• Build and ship an agentic security CI/CD pipeline that runs autonomously against every PR and release candidate.
• Triage and manage the bug bounty program, reproduce findings, and route confirmed issues to engineering with context.

Polygon Labs is a global blockchain payments company building infrastructure to move money instantly and reliably. It has facilitated trillions in onchain value transfer and supports millions of daily transactions for banks, fintechs, and enterprises.

• Own end-to-end domain within the clearing house: customer onboarding, entitlements, or data validation.
• Drive architecture and implementation of backend systems in Go on GCP, ensuring production readiness.
• Establish engineering best practices and collaborate with principal engineer on technical planning.

Chainguard secures the open source software supply chain by providing hardened, secure builds of open source software. It is a venture-backed startup with a remote-first culture, trusted by Fortune 500 enterprises.

• Build features for the 1Password Integrations Marketplace, contributing to web frontend and backend services.
• Help design and implement public-facing APIs using modern standards like REST and gRPC.
• Write clean, well-tested code across a TypeScript/React frontend and Go backend.

1Password builds the foundation for a safe, productive digital future, focusing on identity and access management. With over $400M in ARR and a spot on the Forbes Cloud 100, the company employs a remote-first, collaborative culture that values curiosity and innovation.

• Setting and driving front-end technical strategy across Account Experience teams
• Architecting a complex, data-dense merchant platform
• Shaping Primer AI Companion as a first-class merchant interface

Primer provides unified infrastructure for global payments, giving finance and payments teams visibility and control from a single platform. Backed by top investors, the company is building a remote-first, collaborative culture focused on challenging work and support.

• Set technical direction across multiple domains, owning complex work like greenfield service design and large refactors while producing clear documentation.
• Act as a senior technical authority for security and compliance, partnering on SOC2, vulnerability management, and threat modeling.
• Lead AI-native engineering practices, designing agentic workflows and coaching engineers to collaborate effectively with AI systems.

Pathstream reshapes how frontline employees and managers excel in their careers through enterprise partnerships, transforming teams from transactional to strategic. The company is a tight-knit, mission-driven team of ~60 employees scaling solutions to improve productivity and retention.

• Build and ship high-quality full-stack features across web, mobile, backend services, and APIs.
• Design scalable, reliable systems that support millions of users.
• Partner with Product, Design, and Data teams to solve customer and business problems.

Gametime makes it easy for people to discover and access live experiences like concerts, sports, and theater events through its mobile and web platforms. They have a collaborative engineering culture focused on ownership, learning, and continuous improvement, supporting over 60,000 events across the US and Canada.

• Build and maintain core components of the clearing house in Go on GCP, including customer onboarding flows and data ingestion pipelines.
• Take ownership of ambiguous problems and drive features from design through production with appropriate testing and observability.
• Participate in on-call rotation, contribute to incident response, and become a go-to engineer for core subsystems.

Chainguard is the trusted source for secure open source software, delivering hardened builds for enterprise customers. The company is venture-backed by leading investors and serves Fortune 500 enterprises.

• Architect and build the core automation runtime for open banking data aggregation.
• Design secure network interception layers and high-performance communication protocols.
• Navigate complex multi-step authentication flows and ensure scalability and resiliency.

Zero Hash is the leading crypto and stablecoin infrastructure platform and the operating system for digital money, powering the next generation of financial services. Founded in 2017, the company enables banks, brokerages, fintechs, and payment companies to offer crypto trading, stablecoin payments, and tokenized assets with a high-performing team.

• Build and ship product features across React, .NET Core/Python, and supporting infrastructure from design through operation.
• Bring concrete tradeoffs to design discussions on performance, complexity, blast radius, and time-to-ship.
• Operate what you build: instrument it, respond to alerts, and close the loop on issues that surface after release.

Ellevation develops software to help educators serve English Learners in K-12 school districts. The company partners with over 2,000 school districts and merged with Curriculum Associates in 2021, operating independently with a mission-driven, collaborative culture.

• Own features from concept to deployment and design, build, test, and release production-ready software.
• Refactor and improve existing codebases, debug and maintain AI-generated applications for production.
• Collaborate with globally distributed teams to improve scalability, maintainability, and performance.

Doneverse is a fast-growing technology and digital services company that supports founders and businesses across the United States, Australia, and global markets. They offer a high-autonomy engineering environment and focus on building and scaling production-grade systems.

• Work across Angular/React, Java/Node.js, APIs, databases, AI tools, agents, MCPs, and automation.
• Build and ship real products with clean UI/UX and a high bar for code quality.
• Bring ownership, speed, curiosity, and startup energy while validating AI output and avoiding data leaks.

PlayPower Labs is a company building real products with cutting-edge AI tools and modern web technologies. They focus on fast learning for high-energy freshers in a dynamic startup environment.

• Lead development of scalable web applications and internal tools for Marketing Operations and eCommerce.
• Serve as technical lead, guiding architecture, planning, and cross-functional collaboration.
• Mentor engineers, enforce best practices, and drive improvements in system reliability, performance, and security.

Getty Images is a leading visual content creator, offering a full range of content solutions through its brands Getty Images, iStock, and Unsplash. The company is publicly traded and fosters a collaborative, inclusive culture focused on customer delivery and employee growth.

• Work cross-functionally with product, design, and other engineering counterparts to execute on product and business strategy and build novel products and features that users will love.
• Contribute to the full development cycle: technical design, development, test, experimentation, analysis, and launch, while reviewing code and design docs.
• Lead a team of thoughtful, fast-moving, and motivated engineers, setting standards that improve developer workflows and coaching engineers to further their professional development.

Reddit is a community of communities built on shared interests, passion, and trust, hosting the most open and authentic conversations on the internet. With 100,000+ active communities and approximately 126 million daily active unique visitors, it is one of the largest sources of information online. We are continuing to grow our teams with the best talent.

• Lead the technical roadmap and execution for consumer services and APIs using React, Golang, and AWS.
• Guide engineering teams through design reviews, mentorship, and quarterly planning to balance modernization with feature delivery.
• Optimize system reliability, observability, and scalability for high-volume financial transactions.

Koalafi makes it easier for people to pay for big purchases over time through flexible lease-to-own financing for non-prime consumers. The company has 200+ teammates and emphasizes a culture of innovation, trust, and ownership where employees tackle exciting challenges.