Java Solution Architect

JOB DESCRIPTION

We are seeking a Solution Architect to act as the technical authority, system integrator, and engineering leader across complex, large-scale Enterprise SaaS platforms serving a strategic customer. This role suits architects with deep experience in regulated, high-complexity domains such as FinTech, HealthTech, Smart Manufacturing, ERP, or Compliance-driven platforms, with HRTech/Payroll as a strong advantage.

You will:

Own end-to-end architecture decisions
Raise engineering and delivery maturity across multiple project teams
Be the final technical decision-maker
Actively engage in pre-sales, bidding, and customer technical strategy
Lead the evolution toward AI-enabled, compliant, and adaptive Payroll systems

You connect technology trends with real business value, are the person engineers trust, teams follow, and customers respect.

Responsibilities

Own the overall solution architecture across multiple enterprise SaaS products
Architect configuration-driven, regulation-aware platforms
Define reference architectures, patterns, and guardrails
Make final calls on technology choices, integration strategies, non-functional requirements
Act as the highest technical bar for engineers and tech leads
Review and challenge architecture designs, critical pull requests, release and branching strategies
Step in to build POCs, prototype complex ideas, solve critical technical problems when teams are stuck
Establish engineering standards, provide a unified technical direction across multiple teams
Ensure teams do not duplicate solutions, share reusable components, align on architecture and integration contracts
Drive architecture reviews and decision records (ADR)
Anticipate risks early and prevent systemic failures
Act as technical lead in pre-sales and bidding phases
Write and review technical proposals, architecture sections in bidding documents, solution feasibility and risk analysis
Translate customer business problems into concrete technical solutions, roadmaps and POCs
Confidently present and defend solutions to customers, product leaders, senior management
Proactively drive adoption of modern technologies, especially AI/ML, Agentic AI

REQUIRED SKILLS AND EXPERIENCE

Computer Science, Computer Information Systems, or higher education preferred.
10+ years in software engineering, with a strong backend focus in Java (must-have)
Experience with distributed systems, multi-tenant SaaS architectures, configuration-driven systems
Background in FinTech, HealthTech, Smart Manufacturing, ERP, or other regulated enterprise systems
Experience in HRTech / Payroll / Compliance platforms is a strong advantage
Strong system-thinking mindset: trade-offs, constraints, long-term maintainability
Proven experience leading multiple teams indirectly
Comfortable challenging engineers, tech leads, and managers
Able to explain complex systems to engineers (deep), to customers and executives (clear & simple)
Strong verbal and written communication skills (architecture docs, bids, proposals)
Ability to learn new products, technologies, and industry trends quickly.
Comfortable presenting to audiences including resources from all levels of organization: business, IT, C-level.
Excellent time and task management skills with ability to prioritize and adapt to re-prioritization as necessary.
Results-oriented with a commitment to quality of product and service.
Self-motivated and creative with a natural drive to learn and pick up new challenges.
Proficient in English; ability to communicate in Japanese/Korean is a big plus

BENEFITS

Salary: Negotiable
Probation salary is 100% of official salary
13th-month salary and annual performance review
Bonus for special occasions each year (Labor Day, National Day, Solar New Year, Lunar New Year)
Project bonus
Employee’s professional certification and training allowances subject to company regulations
Health Care Insurance
Annual Health Assessment
Social, health and unemployment insurance following government policy
Enjoy company summer trips and other team-building activities held monthly and quarterly
Professional, creative and dynamic working environment
Work five days per week with flexible check-in time