Senior Software Engineer

October 14, 2026

Hybrid

Senior

Copenhagen, Denmark

Description

An AI-native fintech startup in central Copenhagen is hiring a Senior Software Engineer to turn manual accounting workflows into reliable, intelligent automation. The role covers hardcore business-logic engineering, intelligent document processing pipelines, LLM agents and workflow automation, primarily in TypeScript. The engineer works closely with founders and customers to shape the product and take ideas from concept to production.

Responsibilities

Translate messy human-centric accounting processes into strict business logic
Build pipelines that ingest raw financial documents, cleaning and structuring the data
Build LLM and predictive AI agents that take real-world actions
Identify bottlenecks in customers' daily workflows and code them out of existence
Contribute to UX and state management on the client side of the product
Work with founders and customers to uncover problems and shape ideas from concept to production
Build across the stack and influence technical decisions

Requirements

Must have god-level TypeScript skills with focus on type safety and strict standards
Deep understanding of databases, including modeling financial ledgers and ensuring data integrity
Proficiency with AI-assisted tools such as Cursor, Claude and Gemini to accelerate boilerplate and refactoring
Experience with Python, Go, Rust or Java is valued for backend performance and data processing
Previous experience working in a startup environment is a strong plus
Direct and energetic communication with ability to push back when the design is wrong
Customer-obsessed mindset willing to understand the accounting domain to build the software
Ability to ship production-ready, test-covered features rather than just starting experiments
Adaptable and quick to absorb new knowledge in a changing environment

Conditions

Hybrid workplace with expected 2-3 workdays per week at the office
Close collaboration with the founders and a team of dedicated colleagues
Dynamic work environment with short decision-making paths
Strong opportunities for personal development and expanded responsibilities
Competitive salary and benefits package with ESOP participation and standard cliff periods
Work at the HQ in central Copenhagen with lunch facilities and startup ecosystem access

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