# Sr. Backend Engineer (Remote)

Hiring organization: [Mode](https://career.thegoodapps.co/organizations/mode)

Canonical page: https://career.thegoodapps.co/jobs/11c5b700-94f2-4196-bf86-34326988918f

Listed on Mode's own careers site. Applications go to them directly.

- Employment type: full time
- Seniority: Senior
- Location: Remote
- Remote: yes

## Summary

Mode.Inc is hiring a senior backend engineer to own and stabilize a newly acquired VPN product, focusing on its Go-based networking engine and backend services supporting millions of users across restrictive network environments. This role suits someone passionate about privacy infrastructure who enjoys inheriting complex systems, hardening them through testing and documentation, and shipping reliable, user-focused features.

_Our summary, not Mode's wording._

## Skills named

Adjust, Amazon RDS, Amazon S3, Amazon Web Services (AWS), Amplitude, Ansible, AppsFlyer, AWS Lambda, Datadog, DNS, Docker, Firebase, GitHub, GitHub Actions, Go, HashiCorp Vault, JSON Web Token (JWT), MongoDB, Node.js, OAuth, OpenAPI/Swagger, PostgreSQL, Python, Redis, REST APIs, SSL/TLS, Stripe, TCP/IP, Terraform

## Required

- 5+ years professional senior backend engineering experience
- Go as primary language with concurrency, networking, and cross-compilation for Android and iOS
- Python and Node.js proficiency for existing services and integrations
- PostgreSQL schema design, migrations, and performance tuning
- MongoDB or document store experience
- Redis or caching layer experience
- AWS services including Lambda, S3, RDS, Route 53, IAM, Docker
- Terraform or Ansible infrastructure management
- REST API design, documentation, and authentication patterns
- GitHub version control and pull-request workflows
- SOLID and Clean Coding principles
- CI/CD experience
- WireGuard protocol knowledge and peer management
- Shadowsocks or proxy protocol understanding
- TCP/IP and DNS fundamentals
- TLS and encryption knowledge
- Experience with packet flow through mobile tunnel interfaces
- Third-party platform integration experience with Stripe, analytics providers, and observability tools
- Applied security engineering including secrets management and cryptographic key handling
- Day-to-day use of agentic AI coding tools with strong verification judgment
- Strong communication and empathy
- Independent delivery with technical leadership capability
- Alignment with company core values: Accountable, Action-driven, Caring, Curious, Thorough

## Nice to have

- VPN, proxy, or privacy backend experience at consumer scale
- Censorship-circumvention tooling experience with Shadowsocks plugins, V2Ray, Xray, obfs4
- Contributions to wireguard-go, gVisor netstack, lwIP, or Shadowsocks implementations
- Multi-provider infrastructure experience with AWS, DigitalOcean, Vultr, Hetzner
- Cloudflare experience
- Event-driven and workflow systems like SQS and Step Functions
- Resilient integration patterns with dependency chains and fallbacks
- GDPR, CCPA, SOC 2, and compliance experience
- Data retention and law-enforcement request handling experience
- Kotlin or Swift literacy for mobile pairing
- Experience integrating acquired products or codebases

Apply on Mode's site: https://www.modemobile.com/open-role?gh_jid=8806092002