Senior Backend Engineer - Japan Markets (Remote APAC)

Alpaca; United States; Remote; USD 140,000 - 210,000; Full time

Benefits offered by this job

Stock options

Home-office setup allowance

Monthly stipend

Job summary

Alpaca, a US-headquartered broker infrastructure leader, seeks a Senior Software Engineer for the Japan market. You will design and maintain scalable backend services, collaborate with global teams, and ensure compliance with Japan-specific regulations.

The role enables multi-currency support and integration with JPX, JSCC, and JASDEC, while mentoring teammates and supporting regional growth. The ideal candidate has strong experience in financial systems, proficiency in Go/Java/C++, and

Qualifications

• Business-level Japanese language capable of formal communication with regulators, vendors, and partners.
• Business-level English for cross-region collaboration, design discussions, and documentation.
• Proven experience in designing and developing complex financial systems, preferably with double-entry accounting.
• Strong understanding of accounting principles, ledger structures, and reconciliation.

Responsibilities

• Design scalable, mission-critical brokerage systems for the Japan market.
• Develop middle- and back-office systems, including gRPC microservices and REST/gRPC APIs with vendor integrations.
• Enable multi-language, multi-currency support, focusing on Japan-specific requirements (NISA, MyNumber, withholding tax, JP-GAAP).
• Collaborate with regional teams to align with global architecture and translate regulatory needs into specs.
• Triage incidents and bugs to maintain system reliability and performance.
• Participate in on-call rotations during Japan business hours to support production issues.
• Navigate regulatory requirements in Japan while building scalable, compliant solutions.
• Lead and troubleshoot incidents with authority in a global, distributed team.

Skills

Japanese proficiency

English proficiency

Financial systems design

Accounting principles

Multi-currency handling

Domain-driven design

Event-driven design

Go

Java

C++

Tools

gRPC

REST APIs

Job description

Alpaca, a US-headquartered broker infrastructure leader, seeks a Senior Software Engineer for the Japan market. You will design and maintain scalable backend services, collaborate with global teams, and ensure compliance with Japan-specific regulations.

The role enables multi-currency support and integration with JPX, JSCC, and JASDEC, while mentoring teammates and supporting regional growth. The ideal candidate has strong experience in financial systems, proficiency in Go/Java/C++, and