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Backend Software Engineer - AI Finance Agent

bjakcareerTokyo, JapanEngineering
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Salary
Not listed
Job type
Full-time
Work mode
Remote
Experience
Mid · 3+ yrs
Posted
1 Oct 2026
Status
Open · checked 7d ago

About this role

Bjakcareer is hiring a Backend Software Engineer to develop core systems for an AI finance agent based in Tokyo, Japan. This hybrid position suits experienced developers who want to build scalable infrastructure and reliable financial products.

Role Overview

The Backend Software Engineer position centers on creating the foundational architecture for an artificial intelligence neobank application. Located in Tokyo with a hybrid working model requiring at least three days per week in the office, the professional will collaborate across global teams where English serves as the primary language.

Key Responsibilities

Construct backend services, application programming interfaces, and workflows for the artificial intelligence neobank platform.
Support various financial offerings spanning insurance, payments, digital wallets, savings, investments, and travel services.
Design dependable architectures handling user profiles, financial transactions, partner integrations, data reconciliation, operational notifications, and internal workflows.
Collaborate directly with product management and mobile engineering groups to deploy user journeys rapidly.
Establish technical connections with financial institutions, payment gateways, insurance providers, and external data sources.
Enhance overall system dependability, monitoring capabilities, data security, and execution velocity.
Develop practical, auditable architectures prepared for compliance within regulated financial markets.

Requirements

Minimum of three years of professional background in backend software development.
Solid foundational knowledge encompassing application programming interfaces, database management, system architecture, and production environment debugging.
Demonstrated capability in constructing scalable services alongside third-party system integrations.
Clear comprehension regarding digital security, service dependability, data accuracy, and operational edge cases.
Ability to balance execution speed, technical quality, and risk management effectively.
Capacity to cooperate closely alongside product, mobile, operations, and business divisions.

Nice to Have

Background working within financial technology, digital payments, insurance, lending, banking, or other regulated product sectors.

Skills and Tools

Application Programming Interfaces
Databases
System Design
Production Debugging
Third-Party Integrations

About the Company

Bjakcareer operates as part of an organization founded in 2019 that established a prominent mobile-first insurance platform in Southeast Asia. The company expands financial access across spending, saving, investing, currency exchange, and travel, employing over twenty nationalities globally through distributed offices and remote arrangements.

How to Apply

Interested candidates should visit the official company careers page to submit their application.

Questions candidates ask

Where is this job located?

The position is based in Tokyo, Japan, operating on a hybrid schedule requiring office presence at least three days per week.

How many years of experience are required?

Applicants must have a minimum of three years of backend engineering experience.

What language is used in the workplace?

English serves as the primary working language across the global teams, and strong English communication skills are mandatory.

What is the interview process like?

The recruitment sequence consists of an online assessment or practical task, a technical interview, and a final round with the chief executive officer.

Is prior fintech experience mandatory?

While not strictly mandatory, background in fintech, payments, insurance, lending, banking, or regulated products counts as a strong advantage.

Ready to apply?

The application is on the official bjakcareer careers page.

Apply on company site