What are the responsibilities and job description for the Senior Software Engineer position at Sigmaways Inc?
If you are excited to build a first of its kind data commerce platform from the ground up, we want to chat!
We’re seeking a Senior Software Engineer with experience in marketplaces and transactional systems someone who has built shopping carts, pricing engines or similar commerce workflows.
In this role, you will architect and deliver the core backend of our data valuation marketplace, including user management, transactions, workflows, pricing engines, and data APIs, while owning key decisions for scalability, security and global performance.
Responsibilities:
- Architect, design, and deliver the core backend systems for data valuation marketplace.
- Build foundational services including: user management, marketplace transactions, workflow engines, pricing/valuation services, and data APIs.
- Design and implement marketplace capabilities (shopping cart workflows, transactions, payment flows, listings, and user interactions).
- Build and refine marketplace logic, search, metadata, and pricing models
- Own system design decisions and ensure long-term scalability, security and performance.
Qualifications:
- Bachelor’s or Master’s degree in Computer Science, Software Engineering, or a related technical field (or equivalent industry experience).
- 10 years of professional software engineering experience.
- Write, review, and optimize code using Node.js and TypeScript.
- Build microservices, backend APIs, and integration pipelines using PostgreSQL, AWS services, and modern serverless patterns.
- Lead full-stack development with light UI support where needed.
- Strong expertise in Node.js, TypeScript, PostgreSQL, and RESTful API design.
- Deep knowledge of AWS Cloud (Lambda, API Gateway, S3, DynamoDB, EC2, CloudFormation/CDK or Terraform).
- Experience building marketplaces or commerce platforms (critical requirement).
- Worked on marketplace like shopping carts.
- Experience building backend systems from scratch (0→1 product development).
- Familiarity with distributed systems, microservices, security, and system scaling.
- Experience with data platforms, data economy, or data valuation systems.
- Experience working with globally distributed teams.
- Collaborate with engineering teams in Taiwan (daily syncs between 5–7 PM PT).