Senior Go Engineer - High-Throughput API (Remote)

Xident; Union (NJ); Hybrid; USD 150,000 - 190,000; Full time

Job summary

Xident is seeking a Senior Go Developer to architect and build the core API powering identity verifications. The backend uses Go with Echo, GORM, and PostgreSQL, delivering high-throughput verification endpoints and real-time webhooks at scale.

Join a remote-first company with teams across 12 countries, building privacy-focused identity verification at scale. You’ll lead design decisions, contribute to SDKs, and help evolve our platform.

Qualifications

• 7+ years of professional Go development experience.
• Strong API design skills across SDK, API, and services.
• Experience with PostgreSQL, Redis, and background job systems.

Responsibilities

• Design and implement high-performance Go services handling 10,000+ requests per second using Echo framework.
• Build and maintain verification APIs, session management, and SDK backends with GORM and PostgreSQL (Neon).
• Integrate with ML pipelines via River queue for OCR processing and face matching workflows.
• Implement caching strategies with Redis, rate limiting, and API key authentication.
• Lead technical design discussions and drive architecture decisions for our Go monolith.
• Contribute to our multi-language SDK ecosystem (Go, Node.js, PHP, Python) and Swagger/Scalar API documentation.

Skills

Go language

Concurrency

Distributed systems

API design

High throughput

Code reviews

Tools

Echo

GORM

PostgreSQL

Redis

River queue

Docker

CI/CD

Prometheus

Sentry

Job description

We're looking for a Senior Go Developer to architect and build the core API powering identity verifications. Our entire backend runs on Go with Echo, GORM, and PostgreSQL — you'll own high-throughput verification endpoints, River-based job queues, and real-time webhook delivery at scale.

Xident is building the future of digital identity verification. Our platform enables businesses to verify users' ages and identities in seconds, while respecting privacy through our unique "Verify Once, Access Everywhere" model.

Founded in 2025, Xident is a remote-first company.

Our mission is simple: To make identity verification seamless, private, and accessible for everyone. We believe privacy and convenience shouldn't be mutually exclusive, and we're proving it every day.

What You'll Do

• Design and implement high-performance Go services handling 10,000+ requests per second using Echo framework
• Build and maintain verification APIs, session management, and SDK backends with GORM and PostgreSQL (Neon)
• Integrate with ML pipelines via River queue for OCR processing and face matching workflows
• Implement caching strategies with Redis, rate limiting, and API key authentication
• Lead technical design discussions and drive architecture decisions for our Go monolith
• Contribute to our multi-language SDK ecosystem (Go, Node.js, PHP, Python) and Swagger/Scalar API documentation

What We're Looking For

• 7+ years of professional Go development experience
• Deep understanding of concurrency patterns, goroutines, and channels
• Production experience with PostgreSQL, Redis, and background job systems (River, asynq, or similar)
• Track record of building and operating high-availability distributed systems
• Strong API design skills — our API serves 117 documented endpoints across SDK, dashboard, and admin surfaces
• Experience with Docker, CI/CD pipelines, and observability (Prometheus, Sentry)

Nice to Have

• Experience in identity verification, fintech, or security domains
• Familiarity with WebAuthn/passkey authentication (go-webauthn)
• Experience with Stripe billing integration and usage-based pricing

Our Hiring Process

We respect your time and aim to complete the entire process within 2-3 weeks. Here's what to expect:

1

Application Review

Application Review

3-5 days

Our team reviews your application within 5 business days. We look for relevant experience, passion for our mission, and alignment with our values.

2

Initial Call

Initial Call

30 minutes

A 30-minute video call with our recruiting team to learn about your background, discuss the role, and answer your questions about Xident.

3

Technical Assessment

Technical Assessment

1-2 hours

Role-specific evaluation—this might be a coding challenge, portfolio review, case study, or technical discussion depending on the position.

4

Team Interviews

Team Interviews

2-3 hours

Meet with 3-4 team members including your potential manager and cross-functional partners. We assess technical skills, collaboration, and culture fit.

5

Final Interview

Final Interview

45 minutes

A conversation with a company leader to discuss your career goals, our vision, and ensure mutual fit. This is also your chance to ask strategic questions.

6

Offer

Offer

24-48 hours

If it's a match, we move quickly. Expect a competitive offer within 48 hours of your final interview, with clear details on compensation and equity.

Our Values

Privacy by Design

We iterate quickly, gather feedback, and improve continuously.

Ownership Mentality

Everyone owns their domain end-to-end. No finger-pointing, just solutions.

Transparent by Default

We're happy to answer any questions before you apply. Reach out to our team anytime.