Summary Join Aperia Solutions, a leader in SaaS solutions for the Payments and Compliance industries. Aperia is a Texas-based fintech and managed consultancy firm that creates custom SaaS applications and other software-based solutions for the payments, banking, and processing industry. Founded in 1999, Aperia offers business intelligence, risk management, compliance, and customer intelligence platforms. With offices in Dallas, Washington DC, and Vietnam, Aperia is a fast-paced, global organization that strives to improve efficiency in compliance, risk, and customer service operations. Aperia’s clients include banks, processors, payment facilitators, merchant service providers, independent sales organizations, and government entities. A career at Aperia promises a great challenge, culture, and opportunities to forge your own path. Job Description We are seeking an experienced (Senior/Middle) Software Developer with expertise in .NET Core, CI/CD pipelines, and API development to join our dynamic team. In this role, you will work with cutting-edge technologies and modern architectures, contributing to the development of high-volume, resilient, and scalable solutions in a forward-thinking organization. This position is ideal for a hands-on developer passionate about crafting efficient, reliable, and secure software solutions Required Skills and Experience: * Good English communication * 5+ years of hands-on experience building, maintaining high-performance, scalable APIs with a focus on .NET Framework and Windows-based systems. * Proven expertise in .NET Core, CI/CD pipeline tools (Gitlab, Harness...), Azure cloud * Experience in using AI in software development, Github Copilot is mostly preferred. * Solid knowledge of MSSQL and performance optimization techniques. * Proficiency in Agile/Scrum methodologies for software delivery. * Skilled in debugging, testing, and performance tuning for high-volume transactional systems. Preferred Skills and Experience: * Familiarity with financial or banking systems. * Proficiency in monitoring and logging tools, such as Splunk and Dynatrace. * Knowledge of microservices architecture and containerization (e.g., Docker, Kubernetes). Functional Responsibilities * Collaborate with Business Analysts to clarify requirements from U.S.-based stakeholders, ensuring alignment with technical and business goals. * Provide technical designs and implementation plans, ensuring clarity and feasibility. * Design, build, and maintain RESTful APIs using JSON over HTTPS for high-volume transactional systems. * Optimize and tune database performance: MSSQL * Perform unit testing, cross-testing, and debugging to deliver high-quality, production-ready code. * Employ advanced CI/CD and DevSecOps practices, ensuring efficient and secure software delivery pipelines. * Other duties as assigned. Education or Certifications * Bachelor’s Degree in Computer Science, Information Systems, or other related field. Job Type * Full time Schedule * Monday to Friday Work Location: Vietnam * HCMC: The Six8 Building: 24-26 Phan Dinh Giot, Tan Son Hoa ward. * Danang: VDB Tower: 74 Quang Trung, Hai Chau District. Benefits * Competitive Salary Package – Enjoy a rewarding income from day one. * Security from the Start – Full salary during probation plus complete social insurance coverage. * Premium Health Insurance – Comprehensive protection for you and your loved one (spouse/children). * Family-Friendly Benefits – Monthly childcare support to make parenting easier. * Generous Leave Policies – 15 days annual leave, 6 weeks paternity leave, and 10 days bereavement leave. * Active Lifestyle – Join our vibrant clubs: Football, Billiards, Badminton, and E-sports... This job description is not intended to be all-inclusive. An employee may also perform other reasonable related business duties as assigned by their immediate supervisor or management. Principals only. Recruiters please don't contact this job poster. DO NOT contact us with unsolicited services or offers.