DeFi Jobs

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Job Position Company Posted Location Salary Tags

Pubgenius Inc.

United States

$100k - $140k

Harris Allied

New York, NY, United States

$150k - $185k

MITRE

United States

$124k - $155k

MLabs

New York, NY, United States

$68k - $90k

Referment

New York, NY, United States

$175k - $250k

MLabs

New York, NY, United States

$84k - $99k

Uphold

New York, NY, United States

$104k - $111k

Binance

Taipei, Taiwan

Rift

San Francisco, CA, United States

$105k - $107k

Chainalysis Government Solutions

New York, NY, United States

$85k - $95k

Referment

New York, NY, United States

$175k - $250k

Autheo

United States

$36k - $70k

G-20 Group

Chicago, IL, United States

$100k - $150k

LI.FI

Remote

$35k - $60k

Ellipsis Labs

Remote

$140k - $300k

Pubgenius Inc.
$100k - $140k
United States California US

pubGENIUS is a React.js and Next.js development agency and ad-tech startup. We build websites and apps for clients across the US and Europe, specializing in decentralized finance (DeFi, crypto, NFT, blockchain), fintech, and healthcare, with occasional work in e-commerce and other verticals.

Beyond client work, we operate our own high-revenue web product with a website, mobile app, and machine learning systems powering our ad-tech optimization engine. Performance is not a preference here, it is a core requirement.

We are looking for a Principal Software Engineer, who will be the technical authority, responsible for all development, architecture decisions, and long-term technical strategy across a website, mobile app, and ML-powered ad-tech optimization systems.

This is a full-time independent contractor engagement. You will work hands-on at a senior level where site speed and server performance are core success metrics. You will work directly with stakeholders to set technical direction, remove bottlenecks, and ship production-grade code.

Engagement Details:

  • Type: Full-time independent contractor
  • Hours: Full-time commitment expected
  • Location: Remote (US, Canada, UK, Ireland or Netherlands)
  • Clients: US and Europe
  • Rate: Competitive, based on experience

What You'll Own

  • End-to-end technical ownership of a high-revenue web platform and mobile app
  • Architecture design and long-term technical strategy
  • Server-side rendering pipeline using Node.js, Fastify 5, and React 19
  • Data layer across MySQL and BigQuery
  • GCP infrastructure including Cloud Run, Cloud Build, and Global Load Balancer
  • Ad-tech integrations including Google Ad Manager, GTM, GTag, and GPT.js
  • Performance optimization at scale, where every millisecond counts
  • ML pipeline maintenance and optimization for ad-tech performance

Requirements

Must-Have Qualifications

These are non-negotiable. Please only apply if you have strong, production-proven experience in all of the following:

  • Node.js with TypeScript in production
  • React in a server-side rendering context
  • MySQL including database design, query optimization, and ORM usage
  • BigQuery for querying and managing large-scale datasets
  • GCP with hands-on experience in Cloud Run, Cloud Build, Cloud SQL, and Load Balancing. GCP certification is a significant bonus

Nice-to-Have Experience

  • Ad-tech industry experience including ad serving, yield optimization, and programmatic advertising
  • Affiliate marketing experience, particularly with Anura and Everflow
  • Cloudflare including CDN configuration, caching strategies, and Workers
  • Fastify, especially Fastify 5 patterns
  • Flutter for mobile app contribution
  • Golang or Rust for high-performance service work
  • Machine learning applied to ad-tech optimization (not LLMs or agents)
  • Experience in DeFi, crypto, NFT, blockchain, fintech, or healthcare verticals

About Working With Us

We are a small, senior team that moves fast and cares deeply about craft. You will have genuine ownership and direct influence over product and technical direction. No committee approvals, no lengthy processes, just high-autonomy contract work across interesting problems.

Benefits

  • Fully remote work
  • Flexible hours
  • Paid vacation and sick days

Application Process

  • We do not review applications via LinkedIn DMs or email. Please apply through the application link
  • We do not work with staffing agencies or third-party recruiters. Direct applicants only

pubGENIUS is an Equal Opportunity Employer; employment with pubGENIUS is governed on the basis of merit, competence, and qualifications and will not be influenced in any manner by race, age, colour, gender, religion, national origin/ethnicity, veteran status, sexual orientation, marital status, gender identity, mental or physical disability, or any other legally protected status.

How do I get a job at DeFi?

Getting a job in the DeFi (decentralized finance) industry can be a competitive process, but there are a few steps you can take to increase your chances of finding a job in this field:

  1. Build up your skills and knowledge: To work in DeFi, you'll likely need to have a strong understanding of blockchain technology, as well as other related technologies such as smart contracts and cryptocurrency. Consider taking online courses or earning a degree in a relevant field to build up your skills and knowledge.
  2. Network with industry professionals: Attend meetups and conferences related to DeFi and make connections with professionals in the industry. Networking can be a valuable way to learn about job openings and get your foot in the door at a DeFi company.
  3. Create a strong online presence: Many DeFi companies will look at your online presence (such as your LinkedIn profile and personal website) when considering you for a job. Make sure to showcase your skills and accomplishments online and keep your profile up to date.
  4. Apply for relevant job openings: Keep an eye out for job openings at DeFi companies and apply for positions that align with your skills and experience. Apply for DeFi Jobs without Experience. Tailor your resume and cover letter to the specific job you're applying for and highlight any relevant experience or skills you have.
  5. Consider internships or volunteer work: DeFi Internships or volunteer work can be a great way to get your foot in the door and gain valuable experience in the DeFi industry. Many companies also offer internships to students, so consider applying for an internship if you're still in school.
  6. Be persistent: keep trying if you don't get a job right away. It can take time to find the right opportunity, but with the right skills and determination, you can land a job in the DeFi industry.