Software Engineer II

Top 3 reasons to join us

• Highly competitive salary with annual reviews
• 13th-month salary
• A clear, structured career advancement path

Job description

With many years of experience in delivering cutting-edge software solutions, our company specializes in fintech, banking, and nutrition & healthy diet solutions. We run a real production estate: mature, revenue-critical systems that have served clients for years, side by side with new, fast-moving platforms under active development. We are looking for engineers who respect both.
 

ABOUT THE ROLE

We are hiring a Mid-level Software Engineer (3-5 years) who thrives in a mixed environment: one week you may be safely extending a 10-year-old service nobody fully remembers, the next you are shipping a greenfield feature under a tight deadline. You will not be siloed into "legacy maintenance" or "new development" - you own problems end to end, wherever they live.

• Location: Ho Chi Minh City 
• Job Type: Full Time
• Experience level: 3-5 years production experience (Middle Level)
• Salary range: based on technical skills and experience. Competitive with market salary. 

Please make sure your CV pdf file are readable and scannable with a pdf scanner tool.  A poor-quality pdf file will hurt your chance to be reviewed and may get skipped by our recruiting tool.

Your skills and experience

Engineering:

• Own features end-to-end across a mix of mature (legacy) systems and new platforms: design, implement, test, ship, monitor.
• Maintain, stabilize, and INCREMENTALLY modernize legacy services: add characterization tests before changing behavior, refactor in small safe steps, apply strangler-fig migration where justified - and know when a rewrite is NOT justified.
• Build new services and features with production discipline: automated tests, CI gates, observability (logs/metrics/traces), documented decisions.
• Debug systematically across unfamiliar code: reproduce, instrument, root-cause, fix, and prevent with a test.
• Work with data seriously across RDBMS and NoSQL, and design mobile offline data synchronization: schema design, indexes, query analysis, conflict resolution, data-integrity thinking (this is fintech - small details cause big difference).
• Use AI coding tools (Cursor/Claude/Ollama/Hermes) daily to accelerate, while owning output quality - understand both the good and the bad of AI assistance, review everything critically, and never ship what you cannot explain.

Collaboration:

• Teamwork is a key factor in this role: you succeed with your team, not around it. Share context, help unblock teammates, review pull requests generously, hand off cleanly, and put the team's outcome ahead of individual credit.
• Break down ambiguous product specs into tasks, estimate accurately (+/-20%), ship without handholding.
• Communicate openly and early: surface risks, slips, and bad news when they are still cheap to fix. Explain technical decisions to non-engineers clearly.
• Question requirements that don't make sense; propose better alternatives with trade-offs.

Requirements

Must-haves (Prove These):

• 3-5 years shipping production software in at least ONE mainstream stack (backend or frontend - e.g., .NET/Node/Python/PHP, or a modern web/mobile framework such as Flutter/VueJS/ReactJS), with evidence of depth: architecture decisions, real users, real incidents.
• Evidence of learning a SECOND stack or unfamiliar codebase fast and becoming productive in weeks - tell us the story.
• Legacy-code experience: you maintained, refactored, or extended a production system you did not write, safely. Describe how you avoided breaking it.
• Strong Computer Science fundamentals applied to real problems: data structures, complexity, concurrency basics, and systematic debugging.
• Testing discipline: named frameworks, real coverage, CI enforcement, and at least one regression you prevented.
• Production database competence across RDBMS and NoSQL: indexes, query plans, transactions - plus mobile offline data synchronization and conflict handling.
• Git fluency + CI/CD experience.
• Used AI coding tools regularly WITH critical review - show us one AI mistake  you caught and rejected.

Nice-to-have:

• Fintech/banking/enterprise domain experience.
• Cross-stack range (backend engineer who shipped frontend, or vice versa).
• Observability tooling (Grafana/Prometheus/AppInsights or similar).

We Hire For:

• Critical thinking - question, challenge, improve. You push back on flawed requirements with better alternatives.
• Analytical thinking - analyze deeply, decide wisely. You decompose problems and decide with evidence, even when data is incomplete.
• Attention to detail - small details cause big difference. Especially in fintech: rounding, timezones, edge cases, data integrity.
• Long-term commitment - build lasting value, think long term. We invest in people who stay, grow, and build things that outlast them. Serial job-hopping without cause is a real concern for us; loyalty is rewarded.
• Transparency - open, honest, and clear in everything we do. Bad news early beats good news late.
• Integrity - do the right thing, always. Even when nobody is watching.

Teamwork is important to us and is a key factor in how we hire and grow people. It runs through all six values - transparency, honest collaboration, and shared ownership - and we assess it throughout the process.

Why you'll love working here

Financial Incentives:

• Highly competitive salary with annual reviews
• 13th-month salary
• Monthly performance bonus tied to achievement of agreed KPIs
• Social insurance provided in accordance with Vietnamese law

Professional Development:

• A clear, structured career advancement path
• Training in USA development processes, with guidance and coding best practices from USA-based experts
• Opportunities to tackle complex problem-solving and challenging projects to drive career growth
• Supportive work culture with collaborative projects across various domains
• Training in both soft skills and IT

Work-Life Balance:

• Yearly company trips, and birthday celebrations.

Embrace the opportunity to impact through innovation. Apply now to become a pivotal part of our forward-thinking team.

• We encourage applicants to include a Cover Letter with their application. While it is not required, a thoughtful Cover Letter helps demonstrate your genuine interest in both the position and Vincent Software.
• If you choose to submit one, we recommend 250+ words with specific examples showing how your experience matches our Must-Have requirements, particularly your experience with legacy code, learning new technologies quickly, and identifying mistakes made by AI coding tools.

Only shortlisted and qualified candidates will get our response. For those dis-qualified we’ll keep for reference for future matching suitable positions.