Source Job

• Develop and maintain the open-source GraphQL Router in Golang, focusing on performance and low GC code.
• Collaborate with engineering team to implement new features like Open Federation and data sources.
• Analyze telemetry, run security tests, and troubleshoot issues with customers.

WunderGraph is a fast-growing startup that provides a platform for designing and implementing APIs end-to-end, aiming to reduce friction in digital product development. With a Series A funding of $7.5 million and backing from notable investors, they foster a remote, no-BS culture where employees can make an impact and have their voice heard.

• Design, develop, test, and maintain robust, well-documented software systems using Golang with high performance and reliability.
• Debug, troubleshoot, and resolve production and user-facing issues across distributed systems and services.
• Participate actively in code reviews, architectural discussions, and technical design processes with global engineering teams.

Our partner is a globally distributed, fully remote engineering organization that builds and scales high-performance systems powering enterprise, cloud, AI, and IoT ecosystems worldwide. The company fosters a culture of technical excellence, autonomy, and continuous learning with cross-functional teams across multiple time zones.

• Build and operate large-scale cloud infrastructure for product metrics and real-time analytics.
• Design, develop, and improve fault-tolerant distributed systems processing trillions of events.
• Collaborate cross-functionally, perform code reviews, and participate in on-call rotation.

Jobgether uses AI-powered matching to connect candidates with hiring companies. They process applications quickly and share shortlists directly with employers, operating as a job platform seeking to streamline recruitment.

• Design and evolve backend platforms that collect, process, and deliver high-quality product usage data across complex environments.
• Drive architecture decisions, improve system reliability, and help shape engineering best practices.
• Mentor fellow engineers while contributing to scalable, privacy-conscious solutions.

This is a position listed on behalf of a partner company, which manages all applications and next steps. The hiring company is focused on building next-generation analytics instrumentation infrastructure that enables data-driven product decisions at scale.

• Design, code, test, and debug software applications with attention to performance, scalability, and security.
• Collaborate with cross-functional teams to translate business requirements into technical specifications and architectural designs.
• Participate in code reviews, troubleshoot issues, and maintain comprehensive technical documentation.

EasyPost is a YC unicorn that makes shipping simple for businesses through a developer-friendly REST API. The company is rapidly growing, with a culture of builders and problem-solvers who value elegant architecture and fast decisions.

• Build and maintain high-throughput, fault-tolerant microservices in Go that power the backend.
• Design technical solutions and optimize PostgreSQL queries to meet customer needs.
• Champion code quality through code reviews, testing, and refactoring while collaborating with product and design teams.

mx51 is a payments-as-a-service solution for banks, non-bank acquirers, and merchant service providers. The company fosters an innovative culture with a fun and flexible work environment and is committed to diversity and inclusion.

• Build, scale, and maintain backend services that power core analytics systems processing hundreds of thousands of events per second.
• Work on high-throughput, low-latency systems and contribute to event ingestion pipelines, API development, and data enrichment.
• Write clean, modular, and testable code using Go and Node.js, focusing on building systems that scale.

Insider One is the #1 platform for marketing and customer engagement teams, integrating data, personalization, and journey orchestration across multiple channels. It is a woman-founded, women-led B2B SaaS unicorn with 1,500+ team members across 30 offices, backed by top investors and trusted by Fortune 500 companies.

• 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.

• Design, develop, and support enterprise solutions using GoLang, Kubernetes, and cloud infrastructure.
• Lead architecture discussions, drive proof of concepts, and document projects for seamless integration.
• Collaborate with engineering, product, and sales teams while supporting multiple services through launch.

CIQ builds enterprise infrastructure for demanding workloads including AI, HPC, and cloud-native orchestration. They are a company of builders and open source practitioners, serving major enterprises and government agencies.

• Work with your team to deliver new functionality, then use results to iterate and improve.
• Take an active role in influencing our roadmap and your career objectives.
• Mentor and support other team members, participate in design discussions, and collaborate with the team.

Grafana Labs is the company behind the open observability cloud, Grafana Cloud, built on open-source principles. With over 1,600 team members across 40+ countries, we foster a global collaborative culture backed by leading investors.

• Design, develop, and maintain high-performance agents using Go, with focus on OS internals and telemetry extraction.
• Integrate endpoint application with backend SaaS web application’s REST APIs for threat hunting, ensuring low resource usage.
• Mentor junior engineers, set technical direction, and define AI-assisted code review standards for the team.

Huntress makes enterprise-grade cybersecurity accessible to businesses of all sizes, founded in 2015 by former NSA cyber operators. It is a remote-first team that secures over 5 million endpoints and 11 million identities worldwide, backed by a 24/7 human-led Security Operations Center.

• Collaborate with product managers, designers, and users to build and operate UDS Registry for managing packages in mission environments.
• Lead design, implementation, and deployment of features with direct impact on mission outcomes, including ownership of architecture decisions.
• Participate in on-call rotation, integrate with defense systems, and contribute to open source projects like CNCF and ASF.

Defense Unicorns delivers mission value by streamlining software delivery so customers can focus on the most important challenges. The team is composed of innovators, software engineers, and veterans with decades of experience delivering technology programs across the federal market.

• Design, code, test, and debug scalable software applications and APIs following best practices.
• Collaborate with cross-functional teams to translate business requirements into technical solutions.
• Participate in code reviews, guide AI tooling practices, and maintain technical documentation.

EasyPost provides a developer-friendly REST API for shipping, making shipping simple for businesses from startups to Fortune 500. Founded in 2012 as a YC unicorn, EasyPost is a hyper-growth company with a scrappy, fast-moving culture where builders and problem-solvers thrive.

• Design and implement APIs and services to support data-heavy systems.
• Solve complex technical challenges creatively and effectively.
• Guide team members to develop their technical skills and optimize performance metrics.

Insider One is the #1 platform that unifies marketing and customer engagement tools with AI and a CDP. With 1,500+ team members across 30+ offices and 50+ nationalities, it fosters a diverse, collaborative culture backed by top investors like Sequoia Capital.

• Design and implement AI inference and training cloud products optimized for Kubernetes, including autoscaling and distributed jobs across GPU fleets.
• Write clean, efficient Go code for Kubernetes controllers, operators, and custom resources supporting AI workloads.
• Build APIs, CLIs, and developer tools to simplify deployment, lifecycle management, and monitoring of AI applications.

Gcore is a global provider of infrastructure and software solutions for AI, cloud, network, and security, powering digital experiences worldwide. With 550+ professionals and 210+ edge locations, the company collaborates with partners like Intel, NVIDIA, and Equinix to build the foundation for an AI-driven world.

• Design and deliver secure, scalable software solutions using Go within a cloud-native architecture.
• Build platform capabilities for API security, cryptographic controls, AI governance, and supply chain security.
• Collaborate with engineering, platform, and security teams to enhance production system security and resilience.

Jobgether is a platform that uses AI-powered matching to connect candidates with roles. They partner with companies to manage applications and next steps, fostering an inclusive and diverse working environment.

• Design and develop software in an event-driven microservices environment.
• Build microservices in Golang and work with platform engineers.
• Respond to production issues and communicate with client technical teams.

zerohash is a leading crypto infrastructure platform that powers digital money for banks and fintechs. Founded in 2017, it has raised over $280M and prioritizes independence, collaboration, and transparency.

• Build and maintain high-performance APIs and microservices in Go for payment processing, fraud detection, and authentication.
• Take end-to-end ownership of features and integrations from design to production rollout and monitoring.
• Work cross-functionally with Product, Compliance, and Business teams to deliver elegant technical solutions.

Yuno is a payment orchestrator that connects businesses to 300+ payment methods worldwide through a single integration. Founded by the team behind Rappi, Yuno is growing fast as a remote-first company with a culture of ownership and collaboration.

• Design and maintain high-performance backend services in Golang on GCP and AWS for fraud detection and compliance products.
• Build APIs for banking/payment systems and collaborate with cross-functional teams on product development.
• Own the full product lifecycle including testing with Cypress, Junit, or Mockito and maintain user-facing documentation.

Sardine provides fraud prevention and AML compliance solutions using device intelligence, behavior biometrics, machine learning, and AI. The company has raised $145M from top investors and serves over 300 banks, retailers, and fintechs globally, maintaining a remote-first culture with hubs in North America and Brazil.

• Design, build, operate, and maintain large-scale distributed systems for product metrics.
• Develop backend services using Golang within a cloud-native, Kubernetes-based environment.
• Ensure high performance, reliability, and cost efficiency of critical data processing systems.

The company builds a large-scale distributed data platform for real-time analytics and customer-facing insights. It is a remote-first organization with a strong engineering culture focused on ownership, learning, and technical excellence.