Senior Software Engineer

Company Overview: Join our team at K2K Development, where we build integration infrastructure that powers enterprise data pipelines for a Forbes Top 50 featured product with our Partners. We connect 40+ HR systems, cloud platforms, and data sources into a unified sync layer — handling hundreds of thousands of records across customers worldwide. We're looking for a Senior Backend Engineer to own and evolve this integration platform.

Responsibilities:

Design and build integration connectors for new data sources, extending a plugin-based architecture that currently supports 40+ systems.
Own the data sync pipeline end-to-end: ingestion, transformation, diffing, and reliable delivery to target platforms.
Evolve the internal SDK that handles API communication, authentication flows, rate limiting, and retry logic.
Solve data engineering problems at scale: deduplication, schema drift in third-party APIs, safe bulk operations, and handling inconsistencies in real-world enterprise data.
Maintain and improve monorepo tooling, CI/CD pipelines, and release workflows.
Instrument observability — structured logging, health metrics, and detection of silent failures.
Collaborate with customer-facing teams to diagnose and resolve integration issues, often under time pressure.

Basic Qualifications:

4+ years of professional backend development experience with Node.js and TypeScript.
Strong understanding of REST APIs, HTTP fundamentals, OAuth 2.0, and authentication patterns.
Experience building or maintaining systems that process data at scale — sync tools, ETL pipelines, or integration platforms.
Solid grasp of data structures and algorithms — you can reason about diffing large datasets, indexing strategies, and complexity trade-offs.
Experience with Docker and CI/CD pipelines.

Preferred Qualifications:

Experience integrating with enterprise HR or SaaS APIs (Workday, BambooHR, SAP, Salesforce, or similar).
Familiarity with plugin or extension architectures.
Experience with runtime type validation alongside static typing.
Hands-on work with cloud data platforms (Snowflake, BigQuery, S3) or file-based data sources.
Track record of debugging production issues in scheduled systems where failures are often silent.
Familiarity with structured logging and designing for observability.

What We Offer:

A dynamic, fast-paced work environment with a diverse and passionate team.
Opportunities for professional growth and development.
Competitive salary and benefits package.
Flexible working hours and hybrid work options.

26_DITS: Senior Software Engineer

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