Senior Backend Engineer

San Francisco, CA, US, United States

Job Description

About Skyfire



Skyfire is building the payment backbone for the emerging machine economy -- a future where AI and machines transact seamlessly, instantly, and autonomously. Current financial systems aren't designed for this, so we're creating one that is.By leveraging stablecoins and blockchain technology, Skyfire enables instant, global micropayments between AI, APIs, data providers, and services. Enterprises can also automate microtransactions at scale -- all with speed, security, and transparency. Our team brings deep experience in payments, fintech, and distributed systems -- and we're moving fast to define how the machine economy will pay for itself.

Why This Role Matters


-------------------------


As a

Backend Engineer

at Skyfire, you'll be building the infrastructure that powers high-speed, high-volume machine-to-machine payments. From smart contract integrations to high-throughput APIs, you'll architect, code, and optimize backend systems that will scale from tens to thousands of requests per second. Your work will be critical in making AI-to-AI payments not just possible, but frictionless.

In This Role, You'll Get To:


--------------------------------

Design and develop

core backend components, including smart contract integrations, payment processing logic, and APIs.

Implement scalable blockchain solutions

for on-chain machine payments with high throughput and low latency.

Collaborate closely with product

to translate requirements into robust, maintainable technical solutions.

Optimize performance

for speed, scalability, and cost-efficiency across distributed systems.

Mentor junior engineers

and foster a culture of technical excellence and innovation.

Stay ahead of the curve

on blockchain, smart contracts, and AI technologies -- integrating them where they create real impact.

We're Excited About You Because You Have:


---------------------------------------------

A

self-starter mindset

and the drive to tackle big challenges head-on. Strong

TypeScript proficiency

and

Node.js

backend development expertise. Experience with

PostgreSQL or MySQL

and sound database design skills. Solid

system design skills

to scale from 10s to 1000s of RPS. Familiarity with

CI/CD, Kubernetes, and Docker

for smooth build and deployment. Experience with

cloud infrastructure

(AWS, GCP, or Azure) -- including networking fundamentals like load balancers and firewalls. Strong skills in

testing, debugging, and reliability engineering

.

Bonus Points If You Have:


-----------------------------

Experience with

REST or GraphQL APIs

(design + integration). Knowledge of

OAuth 2.0, OpenID Connect

, SSO, and RBAC. Understanding of

time complexity

and system performance optimization. Familiarity with

NoSQL / Key-Value Stores

. Awareness of

security best practices

for authentication, authorization, and encryption.

Web3 / blockchain experience

-- especially smart contracts and dApps.

Why You'll Love Working Here:


---------------------------------

Competitive cash + equity package

-- we believe in rewarding impact.

Healthcare coverage

for you and your family.

Fast-growth startup environment

-- with real ownership from day one.

Collaborative, high-impact culture

-- where innovation and execution thrive.

Shape the future

-- play a key role in how AI and machines transact globally.

Interview Process



+ Recruiter Screen
+ Woven Assessment
+ Hiring Manager Screen
+ Live Coding
+ System Design
+ Commitment Interview




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Job Detail

  • Job Id
    JD5834875
  • Industry
    Not mentioned
  • Total Positions
    1
  • Job Type:
    Full Time
  • Salary:
    Not mentioned
  • Employment Status
    Permanent
  • Job Location
    San Francisco, CA, US, United States
  • Education
    Not mentioned