Senior Business Analyst

Sofia - Bulgaria

Monthly Salary: Not Disclosed

Posted on: 30+ days ago

Vacancies: 1 Vacancy

Job Summary

About the client:

Our client an award-winning global tax services and software provider is the largest Firm in the world dedicated exclusively to business taxes. With global headquarters in Dallas Texas the Firm provides an integrated suite of federal state local and international tax services on a multijurisdictional basis including tax recovery consulting advocacy compliance and technology services.

About Project: We are developing an API Engine for B2B SaaS platform that enables VAT compliance across multiple jurisdictions ERP systems and external tax authority APIs. The role focuses on transitioning complex system logic into a modern integration-driven architecture while maintaining interoperability with existing core systems.

Responsibilities:

Collaborate with Product Engineering and Architecture to elicit functional and non-functional requirements for the API Engine identify implicit assumptions edge cases and dependencies
Translate high-level concepts into: epics features and well-structured user stories with clear acceptance criteria (functional non-functional)
Define requirements for public and partner-facing APIs ERP system integrations (API-only hybrid file-based where relevant) external tax authority APIs with differing schemas SLAs and behaviors
Capture data contracts and payload expectations error handling retries idempotency versioning authentication and authorization flows
Work closely with engineering to ensure requirements explicitly cover: security (API keys secrets access control auditability) performance and scalability observability (logging traceability error visibility) compliance and regulatory constraints backward compatibility and migration from legacy systems
Help define requirements that allow coexistence with a legacy platform until the latters sunset and gradual migration paths for customers and integrations
Act as a bridge between product intent engineering reality external integration expectations

Requirements

Minimum 5 years of commercial experience as a Business Analyst.
Proven track record working on API-first products and integration-heavy B2B SaaS platforms.
Experience managing requirements for complex ecosystems including ERP integrations and hybrid platform coexistence.
Deep understanding of Agile delivery with a focus on creating shippable value and reducing ambiguity.
Exceptional ability to translate technical complexity for stakeholders and collaborate effectively with architects and developers.
Upper-Intermediate to Advanced English (written and verbal).

Nice to Have

Prior work in regulated domains (finance tax payments compliance)
Familiarity with ERP ecosystems (e.g. SAP Oracle NetSuite Dynamics) and government or authority APIs
Experience with event-driven or asynchronous integrations and multi-tenant SaaS platforms

We offer*:

Flexible working format - remote office-based or flexible
A competitive salary and good compensation package
Personalized career growth
Professional development tools (mentorship program tech talks and trainings centers of excellence and more)
Active tech communities with regular knowledge sharing
Education reimbursement
Memorable anniversary presents
Corporate events and team buildings
Other location-specific benefits

*not applicable for freelancers

Required Experience:

Senior IC

About the client:Our client an award-winning global tax services and software provider is the largest Firm in the world dedicated exclusively to business taxes. With global headquarters in Dallas Texas the Firm provides an integrated suite of federal state local and international tax services on a m...