Software Engineer contractor (Python and Angular) developing scalable applications for transactional billing. Collaborating with teams to enhance business operations and build automation solutions.
Responsibilities
Design, develop, and maintain the Transactional Billing Automation platform, including tracking contract information, prepaid usage blocks, rollovers, and calculating projected usage and balances.
Build and support responsive web application and RESTful APIs to automate transactional billing operations and reduce manual processing.
Develop dynamic UI components for managing customer contracts, multi-product selections, invoice details, and billing summaries.
Implement business logic for prepaid balances, rollover amounts, block total calculations, invoice validations, and contract lifecycle management.
Collaborate with product owners, software engineers, and QA engineers to gather billing requirements and deliver scalable automation solutions.
Create reusable components, clean architecture patterns, and well-documented APIs to improve maintainability and long-term scalability.
Develop unit tests, integration tests, and automated validation processes to ensure billing accuracy and support safe application enhancements.
Participate in code reviews and enforced coding standards, security best practices, and performance optimization techniques.
Develop operational dashboards and billing reports to provide visibility into contracts, prepaid usage, rollover balances, projected customer usage, and actual consumption trends.
Follow development standards, branching strategies, and pull request workflows to deliver clean, secure, and maintainable code through reviews and testing.
Support Agile development processes, including sprint planning, backlog refinement, stand-ups, demos, and retrospectives.
Requirements
Bachelor’s degree in computer science, Software Engineering, or a related field, or equivalent practical experience.
3–5 years of experience as a full-stack developer, with demonstrated contributions to production applications.
3–5 years of experience with front-end frameworks such as Angular and TypeScript.
3–5 years of experience with Python, FastAPI, SQLAlchemy 2.x, JWT authentication, Redis caching, and asynchronous programming.
Strong understanding of RESTful APIs, data flow, and integration patterns.
Experience with HTML5, CSS3, and responsive design principles.
Solid understanding of Object-Oriented Programming (OOP), component-based architecture (Angular), and service-oriented design patterns.
Experience working with relational databases such as SQL Server and MySQL, including writing optimized SQL queries.
Familiarity with version control systems such as Git.
Working knowledge of Agile methodologies and tools such as Jira.
Nice to Have: Familiarity with tools and libraries such as Jinja2, Pytest, MyPy, and OpenTelemetry.
Experience with Apache Superset for building interactive dashboards and data visualization.
Contributions to open-source projects.
Benefits
All your information will be kept confidential according to EEO guidelines.
Fullstack engineer evolving memodio’s prescribed digital health app with Flutter and Node.js. Building accessible features and regulated medical software for older users worldwide.
Senior Python engineer building reliable web - scraping and data - extraction workflows for Mindrift’s AI technology projects. Processing dynamic websites into accurate, validated structured datasets.
Backend Engineer designing APIs and integration architecture for EvenUp's AI - powered legal - tech platform. Improving client portal experiences and application performance from Toronto or San Francisco hubs.
Staff Backend Engineer building search and recommendation systems for Affirm’s pay - over - time marketplace. Setting technical strategy and scaling distributed backend systems across Affirm’s shopping platform.
Senior backend engineer building reliable MySQL and distributed SQL infrastructure for Affirm’s transparent buy - now - pay - later financial products. Automating databases, migrations, networking, and operations at scale.
Senior backend engineer building and operating distributed database infrastructure for Affirm’s buy - now - pay - later platform. Automating provisioning, migrations, failover, and Kubernetes storage networking.
Backend Engineer building Resend’s SMTP and email transport infrastructure. Designing reliable delivery, throttling, routing, and reputation - aware systems for developers.
Salesforce director leading MuleSoft and enterprise data foundation architecture for customer engagements. Advising CxOs and delivering governed, AI - ready platforms across complex technology environments.
Senior Backend Engineer building scalable backend, ETL, and reporting systems for Commerce7, a winery commerce platform. Modernizing legacy databases and powering data - intensive SaaS APIs.
Principal Engineer shaping Xero’s accounting APIs and AI - ready platform. Leading technical strategy for partner integrations, developer tooling, and reliable financial workflows.