Job Title: Senior Software Engineer (Blockchain Systems)

Company Name: Circle

Job Url: https://www.simplyhired.com/job/tgfWW0McMLf9bQyrWsuhXQIFh6r8UlOJFq3acL7IBFyq0G06YlmdgA

Job Description: Senior Software Engineer
Careers Connect
Remote

Job Details
Full-time
$147,500 - $195,000 a year
Qualifications
Azure
6 years
SQL databases
Relational databases
Blockchain
C#
System design
NoSQL
Google Cloud Platform
Scalable systems
Java
Microservices
SQL
AWS
Data management
Team management
Implementing APIs
Scalability
Developing and maintaining backend systems
System architecture design
Senior level
Cryptocurrency
Leadership
Full Job Description
Job Description

Role: Senior Software Engineer (Multiple Openings - 20+ Hires)

Client: Circle

Recruiter: Careers Connect

Location: Fully Remote, US-Based (Strong preference for PT/West Coast overlap)

Compensation: $147,500 - $195,000 Base + Equity

About Careers Connect Careers Connect is an HR Services firm based in Pakistan that excels in Learning & Organizational Development Interventions, Recruitment & Executive Search, HR Outsourcing, Employee Engagement Programs and HR/Workplace Branding services. Team CC is passionate to work with companies in a principle learning partnership scenario and provide tailored solutions via the development of their human capital, brand enhancement and public service.

About the Client Circle is a global financial technology company at the forefront of the new internet of money. Their infrastructure—including USDC, a blockchain-based dollar—powers payments, commerce, and financial applications worldwide.

About the Role Careers Connect is currently hiring on behalf of our client, Circle, a global financial technology leader. We are looking for over 20 Senior Software Engineers to extend Circle’s in-house blockchain systems infrastructure. In this role, you will build and own scalable microservices and secure APIs that transfer value across both blockchain and traditional banking protocols.

Key Responsibilities

Infrastructure Evolution: Extend Circle’s blockchain systems to support the global tokenization of assets.
Microservices Ownership: Build and maintain scalable microservices and APIs that bridge the gap between crypto and traditional finance.
System Design: Collaborate with Product and Engineering to design, test, and document system procedures and quality standards.
API Development: Build publicly accessible APIs that simplify complex payment integrations for developers.
Full-Stack Infrastructure: Write the code that delivers elite payment experiences, managing data sources (SQL/NoSQL), messaging systems, and high-performance APIs.
Requirements

Experience: 6+ years of professional software development experience.
Technical Depth: Deep expertise in Java (Object-Oriented) is required. (Note: C#/.NET backgrounds are not a fit for this stack).
Leadership: Proven experience leading small teams (2–4 engineers) on architecture and system design.
Domain Expertise: Previous experience working with payment systems (Credit Cards, Bank Transfers, etc.).
Cloud & Data: Strong experience with Cloud Services (AWS, Google Cloud, or Azure) and SQL database schema design.
Quality Focus: A "test-first" mentality with a passion for high code quality and continuous delivery.
Job Type: Full-time

Pay: $147,500.00 - $195,000.00 per year

Work Location: Remote