Distinguished Engineer (L7) - Hybrid Data Synchronizer (HHDS)

Team: Core Engineering - Synchronizer Platform

Reports to: VP of Engineering

About HeyDonto

HeyDonto builds secure, high-reliability systems that synchronize healthcare data across on-prem and cloud environments. We connect fragmented systems, standardize data for downstream interoperability, and enable safe bidirectional workflows in constrained real-world conditions.

HHDS is the foundation of this ecosystem: the acquisition, signaling, contract-enforcement, and safe writeback layer that keeps data moving correctly, securely, and auditable to the byte.

The Role

We are hiring a Distinguished Engineer (L7) to lead the architecture and execution of HHDS as a global, multi-tenant synchronizer platform.

You will own the technical direction for all HHDS modules across:

• Connectivity and acquisition (DB, API, Agentic UI)
• Schema signaling and profile activation enforcement
• Resilience and flow control
• Security, privacy, and compliance
• Observability and SLO operations
• Transaction-safe writeback
• Tenant isolation, quotas, and cost controls
• Edge and offline autonomy
• Contract and schema registry enforcement

This is a deeply hands‑on role. You will partner directly with the VP of Engineering and senior technical leaders to scale HHDS into a connector platform that can onboard new data sources rapidly while maintaining strict correctness and compliance.

What You’ll Do

• Define and evolve HHDS architecture as a dedicated data channel layer, with explicit boundaries from EMI (mapping remains outside HHDS).
• Build a connector platform and SDK to support rapid onboarding of new source types:
• Cloud/API connectors (REST, GraphQL, gRPC, webhooks)
• Agentic UI connectors (Playwright + vision/OCR with policy gates)
• Lead a multi-engine database strategy across PostgreSQL, MySQL/MariaDB, SQL Server, Oracle, SAP SQL Anywhere, and future systems.
• Design CDC abstractions that normalize engine-specific mechanisms while preserving ordering, offsets, and recovery guarantees.
• Build transaction-safe writeback pipelines with idempotency keys, preconditions, shadow execution, postcondition verification, and rollback paths.
• Establish contract-first publish enforcement with schema registry integration, compatibility policy controls, and quarantine-on-violation behavior.
• Design offline-first edge behavior: local policy enforcement, secure spill buffering, deterministic replay, and zero-duplicate rejoin.
• Implement tenant isolation and quota controls across data path and control plane, with fairness and cost attribution.
• Set security and compliance standards: least privilege, vault‑managed secrets, mTLS, encryption at rest/in transit, immutable attestations, and consent scope enforcement.
• Own observability standards: OpenTelemetry traces, structured logs, SLOs, alerting, and operational runbooks.
• Mentor senior engineers, drive design reviews, and raise engineering quality across reliability, typing, testing, and operability.

Tech Your Work With

• CDC internals across WAL/binlog/redo/CDC streams, snapshots, and replay
• OpenTelemetry, Prometheus, Sentry, structured logging
• Vault/KMS/HSM patterns, OIDC/OAuth2, mTLS, IAM/RBAC/ABAC
• Playwright automation, layout-aware OCR/vision extraction
• GCP services and distributed systems infrastructure

What We Value

• Clarity over cleverness
• Correctness under failure, not just happy‑path performance
• Explicit boundaries and durable contracts
• Security and compliance by design
• Operational excellence, measurable SLOs, and auditability
• Mentorship through technical depth and shipped outcomes

Qualifications

Required

• 12+ years in software engineering, including deep Python experience in distributed data systems.
• Proven architecture leadership for connector/synchronizer platforms at scale.
• Deep expertise in CDC, replication semantics, schema evolution, and recovery.
• Strong track record delivering transaction-safe writeback systems with strict idempotency and auditability.
• Experience designing multi-tenant systems with isolation, quotas, and cost governance.
• Hands‑on security/compliance engineering in regulated or high-assurance environments.
• Demonstrated ability to lead cross-team technical direction and execution.

Preferred

• Healthcare interoperability experience (FHIR/HL7) and HIPAA/GDPR/SOC2 operational familiarity.
• Experience with edge/offline agents and constrained-network deployments.
• Experience building Agentic UI acquisition/writeback systems under strict policy controls.
• Open-source contributions or published technical writing in data infrastructure, CDC, or reliability engineering.

Why HeyDonto

HeyDonto is where senior engineers solve hard, meaningful systems problems with real ownership and high trust. You will shape the long‑term architecture of a platform that must remain reliable in clinics, hospitals, and hybrid enterprise environments, while setting the engineering bar for correctness, security, and scalability.

If you want to lead the industry‑grade synchronizer layer for healthcare data at global scale, this is that role.

• Work Type: Hybrid
• Location: Berlin, Germany
• If you are interested in applying, please send your English Resume through LinkedIn or send it to mentioning the name of the role you are applying for in the subject of the email.