Senior Integration Engineer - Remote Work

BairesDev; Warszawa; Remote; PLN 449,000 - 674,000; Full time

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.

Skills

Java

API integration

OAuth flows

ETL pipelines

M365/Outlook/Teams/Slack/iManage

QA & contract testing

English

Job description

At BairesDev®, we've been leading the way in technology projects for over 15 years. We deliver cutting-edge solutions to giants like Google and the most innovative startups in Silicon Valley.

Our diverse 4,000+ team, composed of the world's Top 1% of tech talent, works remotely on roles that drive significant impact worldwide.

When you apply for this position, you're taking the first step in a process that goes beyond the ordinary. We aim to align your passions and skills with our vacancies, setting you on a path to exceptional career development and success.

Senior Integration Engineer at BairesDev

In this role, you'll build and maintain integrations connecting core platform services to external systems, applying strong API design and event-driven synchronization patterns. Working across multi-tenant permissioning and OAuth flows, you'll ensure connectors remain reliable, secure, and resilient as they scale across many external systems. This is your opportunity to specialize in integration engineering, solving the unique reliability and versioning challenges that come with connecting many external systems to a single platform.

What You'll Do:

• 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.

What we are looking for:

• 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.

How we do make your work (and your life) easier:

• 100% remote work (from anywhere).
• Excellent compensation in USD or your local currency if preferred
• Hardware and software setup for you to work from home.
• Flexible hours: create your own schedule.
• Paid parental leaves, vacations, and national holidays.
• Innovative and multicultural work environment: collaborate and learn from the global Top 1% of talent.
• Supportive environment with mentorship, promotions, skill development, and diverse growth opportunities.

Join a global team where your unique talents can truly thrive and make a significant impact!