Light

FinTech

IntegrationEngineer

€70–105k ~AI est. Bulgaria FULL TIME Remote Friendly
Market Sentiment
HIGH DEMAND

Neural analysis suggests this role is
optimal for Mid+ candidates.

The Brief

“Integration Engineer at Light. Skills: Integration engineering, API design, Financial systems. Build against corporate banking APIs. Build against payments APIs”

What You'll Achieve.

Ensure data agreement; Ensure money movement agreement

Industry & Context.

FinTech
Problems you'll solve

Root cause analysis; Troubleshooting; Data integrity

What They're Looking For.

Must Have

4-6 years of experience, Working software in production, Built integrations against external systems, Defend a system against a partner, Know banking and payments APIs, Comfortable across the stack, Care about data integrity, Ship early and often

Nice to Have

Experience integrating J. P. Morgan, Experience integrating HSBC, Familiarity with ISO 20022, Familiarity with SWIFT, Familiarity with virtual accounts, Familiarity with open banking, Experience in fintech, Experience with accounting concepts, Experience with e-invoicing standards, Experience with country-specific compliance regimes, Background in high-growth startups

What You'll Do.

Build against corporate banking APIs

Build against payments APIs

Handle account information

Handle payment initiation

Handle status reporting

Design integrations for multi-tenancy

Isolate credentials per tenant

Isolate configuration per tenant

Isolate data per tenant

Connect to e-invoicing networks

Connect to tax platforms

Manage compliance edge cases

Keep delivery auditable

Implement webhook strategies

Implement polling strategies

Implement dead-letter handling

Ensure end-to-end reconciliation

How You'll Work.

Team & Collaboration

Cross-functional teams

Full Job Description

RETIRE THE ERP. Light exists to replace factory-era ERPs with software that feels alive. Our Smart Financial Platform gives modern, global companies superpowers—automated accounting, real-time reporting, and financial flows that move at the speed of the business. We build with our customers, ship fast, and obsess over craft. In a short time, Light has gone from idea to the operating core for leading companies like Lovable, Legora, and Keyshot. People don't just use Light—they enjoy it. We're an early team defining a new software category. Think engineers who love debits and credits, designers who care about reconciliation states, and operators who treat finance as a product. If you're excited to modernize how the world runs money—one workflow at a time—you're in the right place. Backed by world-class investors and advised by industry titans, we're building category-defining products with the freedom to ship ambitiously and own outcomes. Come help us make Light the global default for next-gen finance. THIS INTEGRATIONS ENGINEER ROLE Light is only as powerful as the systems it connects to. Money doesn't move because we say so—it moves because we speak the language of the bank, the e-invoicing network, and the planning tool on the other side, correctly, every time, for every customer entity. This role owns that layer: the interaction surface between Light and the rest of the financial world. You'll build and operate the integrations that let Light plug into multi-tenant banking APIs (J.P. Morgan, HSBC, and peers), global e-invoicing networks, and tax platforms and more. This is backend-heavy, data-integrity-critical work where a dropped message or a silent reconciliation mismatch is not an acceptable outcome. You'll design the abstractions that turn a dozen incompatible partner APIs into one coherent internal model, and you'll keep those abstractions honest as partners change their specs underneath you. What you'll work on: - Bank connectivity. Build against corporate

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