Backend Engineer, Reporting Systems - Contract 6mo

Polychain Capital; San Francisco (CA); On-site; USD 170,478 - 242,802; Full time

Job summary

A leading company in the cryptocurrency space is seeking a Backend Engineer to support their Accounting and Reporting Systems. This role involves designing APIs, managing crypto asset data, and optimizing data accessibility for portfolio management. Ideal candidates will have a strong background in backend engineering, SQL, and blockchain technologies.

Qualifications

• 3–5 years of experience in backend engineering roles.
• Strong expertise in SQL and relational databases.
• Proven experience designing and managing APIs.

Responsibilities

• Design, develop, and maintain APIs to extract crypto asset data.
• Normalize raw data to ensure accuracy and consistency.
• Write and optimize complex SQL and NoSQL queries.

Skills

SQL

APIs

Data Visualization

Blockchain Technologies

Decentralized Finance

Education

Bachelor’s or Master’s degree in Computer Science, Data Science, or related field

Tools

Google Cloud

AWS

Job description

Polychain is seeking a Backend Engineer to support our Accounting and Reporting Systems. This contract role is essential to building APIs, managing crypto asset data, and delivering actionable insights for our asset operations team. You’ll focus on data extraction from various crypto platforms, data normalization, and optimizing data accessibility for portfolio management, smart contract vesting, and counterparty exposure.

Key Responsibilities

A PI Development and Integration

• Design, develop, and maintain APIs to extract crypto asset data from counterparties and block explorers.
• Ensure high reliability, performance, and security across all data pipelines.
• Utilize no-code tools like Retool to build internal dashboards and data interfaces.

Data Management and Normalization

• Normalize raw data to ensure accuracy and consistency across systems.
• Implement scalable data storage and retrieval solutions.

Query and Reporting Optimization

• Write and optimize complex SQL and NoSQL queries to support robust reporting.
• Ensure data is easily queryable for portfolio insights and operations analysis.
  
  

Cross-Functional Collaboration

• Partner with teams across asset operations, finance, and investments to understand data needs.
• Build dashboards and reports that provide visibility into smart contract vesting schedules, counterparty exposures, and portfolio positions.
  
  

Documentation and Compliance

• Maintain clear documentation for APIs, data models, and reporting tools.
• Ensure compliance with data protection and processing standards.
  
  

Qualifications

Required:

• Bachelor’s or Master’s degree in Computer Science, Data Science, or a related field.
• 3–5 years of experience in backend engineering roles.
  Strong expertise in SQL and relational databases.
• Proven experience designing and managing APIs.
  Familiarity with blockchain technologies, smart contracts, and decentralized finance.
• Ability to build backend-powered data visualizations and reporting interfaces.
• Resourceful and solutions-oriented; comfortable in fast-paced, ambiguous environments.
• Passion for cryptocurrency and blockchain technology.
  
  

Preferred:

• Experience with Google Cloud (BigTable) or AWS.
• Prior work in the crypto/blockchain industry.
  
  

Competitive Compensation: $150/hour (dependent on experience).

Polychain is an equal opportunity workplace and is an affirmative action employer.Polychain does not make hiring or employment decisions on the basis of race, color, religion, creed, gender, national origin, age, disability, veteran status, marital status, pregnancy, sex, gender expression or identity, sexual orientation, citizenship, or any other basis protected by applicable local, state or federal law.We also consider qualified applicants with criminal histories, consistent with applicable federal, state and local law.

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