Private Business Network is an enterprise VPN and cyber security solution being developed by the makers of Private Internet Access (PIA), one of the world's leading consumer VPN services. We are building a next-generation cyber security product for SMBs that want the ease-of-use of a consumer VPN (On/Off), but need centralized management, powerful web filtering, and end-to-end encrypted audit logging. The product is currently in internal beta and launching later this summer.\n\n\n\nYour challenge, should you choose to accept it, is to lead the development of the backend VPN infrastructure, custom VPN client/server framework, and cross-platform VPN clients. It is full-stack in the truest sense, with roughly a 75% backend and 25% frontend split, although not in the sense of a traditional web app. The frontend consists of VPN clients using webview technologies (custom, not Electron). Knowledge of Win32 and macOS Cocoa will be helpful in making the apps feel at home on these platforms.\n\n\n\nIn addition, there are plenty of opportunities to work on various different parts of the product, including end-to-end encrypted audit logging, cryptographic key management, single-sign on (SSO), device management (MDM), configuration management, and more.\n\n\n\nOur infrastructure is managed with Packer, Terraform, and Docker and we use both AWS and bare metal hosting providers. We're strong believers in a "less is more" philosophy and still use Makefiles and shell scripts with a sprinkle of Python in our build process.\n\n\n\nWe are a fully-remote company, although sometimes our team members like to be in the same part of the world, it is by no means a requirement. Currently, we are just a handful of people, but we want to cultivate a transparent and friendly culture where everybody feels like they are connected and part of a team that is building something awesome!\n\n\n\nCompensation Salary DOE ($120,000 - $150,000 USD) | Health/Dental/Vision paid 100% for U.S. Employees | Flexible Vacation Time | Employer paid STD, LTD, and Life/AD&D | Additional perks if on-site in Denver, CO office, such as lunch/snack and transportation benefits. \n\n# Requirements\n* Cross-platform (native or hybrid) app development experience (macOS, Windows, Linux)\n\n* Familiar with network protocol design, C10K problem, and Go garbage collector highly desired\n\n* Secure systems design experience is a nice to have (cryptography, AWS KMS, Secrets Manager, etc.)\n\n* Experience containerizing applications using Docker (e.g., Kubernetes concepts desired!)\n\n* Familiarity with Curve25519, ECDH, secret sharing, WireGuard, osquery, MDM, etc. are a huge plus! \n\n#Salary\n$120,000 - $150,000\n

Upstack is a friendly team of the world’s most talented freelance developers, working remotely for some of the coolest start-ups. It’s fun and challenging to join the top 1% of the world’s best developers. We have a strong focus on quality clients and developers and try to work on software that we love! Upstack is officially based in US with headquarter in New York City and with offices in LA and Europe. We also have development hubs opening up all around the place with our first in Brasov, Romania. Our developers work from home and co-working spaces and sometimes even on the beach!\nThe work:\n- Work with a small team of top-tier developers who are designing great user experiences and building truly great applications for web\n- Participate in scrums consisting of cross functional teams, both software and hardware\n- Ensure that features are being delivered efficiently and on-time\n- In addition to code contribution, you will also participate in architectural review and design\nMinimum qualifications:\n- Bachelor's degree in Computer Science or equivalent practical experience\n- 3+ years work experience as a software engineer or relevant experience\n- Experience using at least one of these Front-end technologies: Angular.JS/ React.JS\n- Experience using at least one of these Back end-end technologies: Node.JS / Ruby on Rails / Golang / Python\nPreferred qualifications:\n- Proven track record of shipping software and successfully released apps (please include names and links on your resume)\n- Strong attention to detail on every line of code, every unit test, and every commit message\n- Comfortable with rapid development cycles and tight schedules\nWe love when engineers send us a link to their Github and/or StackOverflow accounts, technical blog, or links to apps they've shipped! \n\n# Requirements\nPlease apply using the following link: https://upstack.co/careers?source=remoteok