Senior Full Stack Engineer - Web3 - Twelve : Job Details

3 days ago Be among the first 25 applicants

This range is provided by Twelve. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.

Base pay range

$180,000.00/yr - $220,000.00/yr

Direct message the job poster from Twelve

Co-Founder at Twelve; Hiring Engineers in NYC & London

About the Role:

Working for a fast-growing Web3 fintech building the infrastructure behind seamless digital transactions. You will be building the technology that powers the infrastructure of Web3 for some of the most forward thinking platforms. You will be joining a small team that is scaling fast, with double digit revenue increases MoM. You should be someone who thrives on product ownership, solving real technical challenges, and working closely with a high-calibre team.

As a Senior Full-Stack Engineer, you'll take ownership of building and optimising SDKs and APIs that developers love. You'll work across the stack to ensure performance, reliability, and usability, collaborating with teams across the business to deliver meaningful product impact.

What You'll Do:

• Design and develop high-performance SDKs and APIs used by developers across multiple platforms
• Contribute to product architecture and technical strategy
• Work closely with engineers, designers, and product leaders to shape user-facing features
• Improve tooling, integration flows, and developer experience
• Help scale core infrastructure as the business grows rapidly

What We're Looking For:

• 4+ years of experience in software engineering
• Experience with backend tools like Node, Express, or Next.js
• A sharp eye for performance, developer experience, and scalability
• A bias for shipping, with a strong product mindset and autonomy
• Interest in fintech, infrastructure, or web3 is welcome but not required

Why Join Us:

• Build real products solving real technical problems
• Work with a world-class team in a high-trust, high-ownership environment
• Help shape the future of digital transactions and financial infrastructure
• Competitive pay, fast-moving culture, and serious upside.

Seniority level

• Seniority levelMid-Senior level

Employment type

• Employment typeFull-time

Job function

• Job functionInformation Technology

Referrals increase your chances of interviewing at Twelve by 2x

Inferred from the description for this job

Medical insurance

401(k)

Get notified about new Full Stack Engineer jobs in New York City Metropolitan Area.

New York, NY $100,000.00-$200,000.00 1 year ago

New York, NY $150,000.00-$200,000.00 3 months ago

New York, NY $90,000.00-$140,000.00 11 months ago

New York, NY $120,000.00-$180,000.00 2 months ago

New York, NY $150,000.00-$180,000.00 2 days ago

New York, NY $165,000.00-$165,000.00 1 year ago

New York, NY $120,000.00-$200,000.00 1 month ago

New York, NY $140,000.00-$180,000.00 3 months ago

New York, NY $110,000.00-$155,000.00 8 months ago

New York, NY $100,000.00-$175,000.00 3 months ago

New York, NY $120,000.00-$200,000.00 1 month ago

New York, NY $180,000.00-$240,000.00 5 months ago

New York, NY $115,000.00-$190,000.00 10 months ago

New York, NY $150,000.00-$180,000.00 2 days ago

Software Engineer, Product Fullstack (2-8 YOE)

New York, NY $148,100.00-$221,500.00 2 days ago

New York, NY $120,000.00-$180,000.00 2 months ago

We're unlocking community knowledge in a new way. Experts add insights directly into each article, started with the help of AI.

#J-18808-Ljbffr