Senior Java Developer

Qubika; United States; Remote; USD 140,000 - 190,000; Full time

Job summary

Qubika is seeking a Senior Backend Engineer to build the backend services of a new data ingestion platform for the insurance sector. You’ll own API development and backend engineering, collaborating with data and DevOps teams alongside a separate frontend team.

You’ll implement a standalone ingestion API, ensure S3 storage with metadata, and enable auditing through a PostgreSQL-based data catalog. Strong multi-tenant auth and configurable workflows are required.

Qualifications

• Senior-level backend experience designing and running APIs.
• Extensive AWS experience (S3, IAM) for secure ingestion.
• Strong PostgreSQL skills and metadata modeling.
• Implement authentication and multi-tenant access controls.
• Design configurable workflows and reliable integrations.
• Collaborate with frontend via documented API contracts.
• Advanced English communication.

Responsibilities

• Build a standalone ingestion API with contract prior to implementation.
• Store submissions in S3 with metadata and error handling.
• Integrate with data catalog for auditing and status tracking.
• Configure per-partner workflows and avoid per-org code.
• Enforce tenant isolation and authorization.
• Support routing of files to downstream systems.
• Collaborate with DevOps on deployment, testing, logging, and docs.

Skills

Backend API development

AWS (S3/IAM)

PostgreSQL

Authentication & multi-tenant

Configurable workflows

CI/CD & DevOps collaboration

English proficiency

Tools

S3

IAM

PostgreSQL

Databricks

Lakebase

Okta

Job description

We’re looking for a Senior Backend Engineer to build the backend services of a new data ingestion platform for our client, a company in the insurance industry. The platform will receive and track data from external partners (MGAs, TPAs and others), replacing scattered submissions by email, file-sharing tools and direct S3 access with one standard ingestion channel.

You’ll own API development and backend engineering, working with Qubika’s data and DevOps teams and with a separate front-end team.

What you’ll do

• Build a standalone ingestion API that receives submissions and gives the front end reference data, required-file lists and submission status. You’ll agree on the API contract with the front-end team before implementation.
• Make sure every incoming file lands in S3 with the required metadata and tags. This includes validation rules, clear error responses, and reliable handling of failed or duplicate submissions.
• Build tracking and auditability by integrating with the client’s data catalog (PostgreSQL-based) to record what was received, from whom and when, and to track each submission’s status.
• Build backend configuration for required files, reporting periods and due dates per partner. Partners that submit on behalf of several organizations should work without custom code for each one.
• Define and enforce tenant isolation and authorization, so external users only see the organizations and submissions they’re allowed to.
• Support configuration-driven routing of files to downstream processing systems.
• Work with DevOps on deployment, CI/CD, service accounts and configuration, including automated testing, logging, monitoring and technical documentation.

What we’re looking for

• Senior-level, hands‑on experience building and running backend applications and APIs
• Experience with AWS, especially S3, IAM and secure file ingestion
• Strong relational database skills, including PostgreSQL, metadata modeling and audit trails
• Experience implementing authentication, authorization and access controls in multi‑tenant applications
• Ability to design configurable workflows, reliable integrations and maintainable services
• Experience working with a separate front‑end team through documented API contracts
• Comfortable recommending practical engineering standards in an organization building its first application
• Advanced English

Nice to have

• Experience with Okta
• Experience with Databricks / Lakebase
• Experience building external partner portals

This job opening includes people registered in the National Registry for Persons with Disabilities (Registro Nacional de Personas con Discapacidad - Ley N° 19.691) who meet the conditions and suitability for the position. If you require any accommodations during the application process, please reach out to us at [e-mail].