Remote Senior Integration Engineer: API, OAuth & ETL

BairesDev

Warszawa

Remote

PLN 449,000 - 674,000

Full time

10 days ago

Application generator

Turn this role into an interview — a resume and cover letter built around what this employer wants.

Get past ATS filters

Benefits offered by this job

Remote work

Competitive compensation in USD

Home office setup

Flexible schedule

Paid parental leave

Generous vacation

Multicultural environment

Mentorship and growth

Job summary

BairesDev is a fully remote international technology company seeking a Senior Integration Engineer. You will build and maintain integrations linking core platform services to external systems, with a focus on REST APIs, OAuth, and multi-tenant patterns.

Join a global team delivering reliable connectors across platforms like M365, Outlook, Teams, Slack, and iManage. You’ll work within a distributed engineering culture, enjoy flexible schedules, and contribute to scalable, secure integrations

Qualifications

5+ years of experience in software engineering.
Strong proficiency in Java.
Deep experience with API and systems integration, including REST, webhooks, and event-driven sync.
Experience with OAuth and multi-tenant permissioning/auth flows.
Background with ETL and data pipelines, including connectors, parsers, and schema normalization.
Experience integrating with platforms such as M365, Outlook, Teams, Slack, or iManage.
Experience with QA, contract testing, and connector reliability including versioning and regression across integrations.
Advanced proficiency in English.

Responsibilities

Build and maintain API and system integrations using REST, webhooks, and event-driven synchronization.
Implement OAuth and multi-tenant permissioning and authentication flows.
Design ETL pipelines including connectors, parsers, and schema normalization.
Build integrations with platforms such as M365, Outlook, Teams, Slack, or iManage.
Ensure connector reliability through contract testing, versioning, and regression coverage.