About the project: An AI-powered SaaS platform for digital customer and employee onboarding, identity verification (KYC/AML), and secure document collection, serving clients across property, banking, insurance, and legal sectors. The platform is ISO27001-certified and GDPR/CCPA-compliant, and is actively expanding into new markets, which requires new integrations and growing backend capacity.
You’ll join as a backend engineer on the existing .NET backend, working closely with the current DevOps and frontend (Vue.js) team members.
Engagement * Part-time, ~40 hours/month to start for nearly 2 months, may flex up to 50 hours in peak periods. After a couple of months — ~20 hours/month. * Hours are irregular/demand-driven rather than fixed daily hours — requires flexibility and responsiveness. * Availability overlapping with client’s business hours needed for 2–3 short syncs/week plus a weekly tech review. * Initially scoped for a couple of months, with likely extension depending on client growth.
Responsibilities * Develop and maintain backend functionality in .NET / C#. * Work with PostgreSQL: schema design, query and performance optimization. * Design and maintain REST APIs and third-party integrations (incl. integrations with external systems as the product expands into new markets). * Investigate and resolve production issues; support incident response. * Improve performance and scalability for high-volume operations — including background/async processing for bulk data operations (e.g. large-scale record deletion, which currently causes timeouts). * Participate in deployment (staging → production) and coordinate with DevOps on release processes. * Review existing code/architecture and flag technical risks as the platform scales. * Collaborate with frontend (Vue.js) and DevOps team members during releases and planning syncs. * Use AI-assisted development tools in day-to-day work to accelerate delivery while maintaining correctness, security, and maintainability.
Required experience and skills * 5+ years of commercial experience with .NET / C#, solid backend delivery track record. * Solid PostgreSQL and relational database experience. * Hands-on REST API design and third-party integration experience. * Experience working within and improving existing production systems (not greenfield). * Ability to investigate and solve problems with reasonable independence. * Ability to ramp up on an existing, moderately complex codebase with limited onboarding time. * Strong English communication for coordination with a client team based in a European timezone. * 1+ year of experience using AI-assisted development tools (e.g., Codex, Claude Code, GitHub Copilot, Cursor) to accelerate system design, development, debugging, and testing while maintaining high code quality. * Ability to critically evaluate and harden AI-generated solutions, ensuring correctness, security, and maintainability in production systems.
Nice to have * Experience with Google Cloud Platform (GCP). * Vue.js experience. * CI/CD and deployment process experience. * Experience with systems handling large data volumes / bulk operations. * Experience with property, real estate, or identity-verification platforms.
