SR. Full-stack Developer + AI experience

Simpat Tech; United States; Remote; Confidential; Full time

Benefits offered by this job

Career plan and growth opportunities

Excellent company culture

Flexible work time

Collaboration in a multicultural environment

Payroll and Law benefits

Saving Fund

Food Vouchers

Major medical insurance

Life Insurance

10 extra vacation days

Improve Yourself Budget

Job summary

Simpat Tech is seeking a Senior Full-stack Developer in the United States to innovate and develop high-quality web applications. The ideal candidate will possess over 8 years of professional software development experience, strong knowledge of .NET/C#, and modern front-end frameworks like React, Angular, or Vue. This role includes leading Agile development efforts, database management, and ensuring code quality. The benefits package features a flexible work environment, additional vacation days, and major medical insurance with dental coverage.

Qualifications

• 8+ years of professional software development experience.
• Strong understanding of Object-Oriented Programming.
• Experience with .NET/C# and modern frameworks like React, Angular, or Vue.
• Familiarity with cloud technologies such as Azure or AWS.
• Experience with relational database design (MS SQL preferred).
• Strong background in SOLID principles and design patterns.
• Fluency in English, both spoken and written.

Responsibilities

• Develop end-to-end web applications using DotNET for back-end and modern front-end frameworks.
• Design scalable, high-performance systems with cloud-native technologies.
• Build and maintain relational databases focusing on performance and integrity.
• Lead Agile development efforts and ensure adhere to Lean principles.
• Write maintainable, high-quality code following SOLID principles.
• Develop unit and integration tests for code stability.
• Collaborate in a diverse team environment, contributing to continuous improvement.

Skills

Professional software development experience

OOP understanding

.NET/C#

ReactJS

Angular

VueJS

Cloud native technologies (Azure or AWS)

Relational database design (MS SQL preferred)

SOLID principles and design patterns

Fluent in English

Tools

CI/CD tools (GitHub Actions, Azure DevOps, TeamCity, Octopus)

AI coding assistants (Claude Code, Codex, GitHub Copilot)

Job description

We’re a custom software development company that empower organizations by becoming their trusted technical partner.

We have won awards for being one of the Best Places to Code four years in a row, something that none of our competitors can say! Our work environment is based on innovation, trustworthiness, and fellowship.

We’re always looking for passionate people, who want to create solutions that improve organizations and the lives of people in them.

Rings a bell? Perfect! We have an amazing opportunity as a Senior Full-stack Developer to join our Simpat Tech Family!

Tasks

• Develop end-to-end web applications DotNET Framework and .NET Core for back-end development along with modern front-end frameworks like Vue.js, React, and Angular
• Design and implement scalable, high-performance systems with cloud-native technologies (Azure or AWS).
• Build and maintain relational databases, with a focus on MS SQL, ensuring optimal performance and data integrity.
• Lead development efforts using Agile methodologies with a strong focus on Lean software development principles.
• Apply SOLID principles and design patterns to write maintainable, high-quality code.
• Develop unit tests and integration tests to ensure the stability and reliability of your code.
• Collaborate in a multicultural, diverse team environment where everyone’s ideas are valued. Contribute to a culture of continuous improvement, helping your peers level up through mentoring and knowledge sharing.

Requirements

• 8+ years of professional software development experience
• Strong OOP understanding
• Experience in .NET/C#
• ReactJS or Angular or VueJS experience
• Experience with cloud native technologies within Azure or AWS
• Relational database design experience (MS SQL preferred)
• Background experience with SOLID principles and design patterns
• Fluent in English, spoken and written

AI & Modern Development

• Experience on setting up CI/CD pipeline (GitHub Actions, Azure DevOps, TeamCity, Octopus is preferred)
• Experience using AI coding assistants (Claude Code, Codex, GitHub Copilot, etc.) to accelerate development
• Experience deploying AI features to production

Nice to Have

• Proven experience integrating with Azure OpenAI or the OpenAI API
• Hands-on experience with at least one vector database (Azure AI Search, Pinecone, Qdrant, or PGVector)
• Understanding of RAG (Retrieval-Augmented Generation) patterns
• Familiarity with AI frameworks such as Semantic Kernel or similar

Benefits

• Career plan and growth opportunities
• Excellent company culture and working environment
• Flexible work time
• Collaborate in a multicultural environment
• Payroll and Law benefits
• Saving Fund
• Food Vouchers
• Major medical insurance with dental and visual coverage (Familiar)
• Life Insurance
• Personal Accident Insurance (Familiar)
• 10 EXTRA vacation days during the year Zero (increasing according to the law)
• Additional days: sick days, Improve Yourself Time, etc.
• Improve Yourself Budget (training, courses, certifications, etc.)
• Referral bonus and more

We always look for ways to reward those who stand out among their peers and demonstrate true dedication.

When we say we treat each other like family, we mean it!