Source Job

South America

  • Act as a key player in the support and evolution of applications developed in SQL Server and C# .NET, contributing to the creation of innovative and robust solutions.
  • Seek and prioritize continuous improvement of processes and engineering practices, mentoring junior developers and promoting a learning environment.
  • Perform a fundamental role in the architecture and development of systems, ensuring high performance and scalability in the implemented solutions.

SQL Server REST APIs Communication

20 jobs similar to Senior Software Developer (.NET / VB6)

Jobs ranked by similarity.

Global

  • Design, build, and maintain back-end services using C#, ADO.NET, and SQL Server.
  • Implement and evolve SOAP and REST APIs, ensuring best practices and versioning standards.
  • Ensure service reliability through unit and integration testing, troubleshooting, and root-cause analysis.

CI&T is a tech transformation specialist, uniting human expertise with AI to create scalable tech solutions. With over 8,000 CI&Ters around the world, they’ve built partnerships with more than 1,000 clients during their 30 years of history.

$115,000–$140,000/yr
US

  • Design, build, and maintain performant, well-structured, and well-tested code.
  • Champion code quality, automated testing, and observability best practices.
  • Mentor junior engineers, guiding them through technical challenges.

PerfectServe offers Best in KLAS clinical communication and physician scheduling solutions. They have seen significant growth and aim to improve healthcare outcomes through innovative technology.

India

  • Design, develop, and maintain applications using .NET technologies
  • Work on both new feature development and enhancement of existing platforms
  • Collaborate within an Agile environment, contributing to planning, delivery, and continuous improvement

Smart Working connects skilled professionals with outstanding global teams for full-time, long-term roles. They focus on breaking down geographic barriers and value employee growth and well-being, aiming to provide a thriving remote-first work environment.

Latin America

  • Develop new functionalities in critical applications.
  • Ensure applications meet architecture and security standards.
  • Participate in requirements analysis and propose technical solutions.

Tekton Labs is a technology consulting and software development company, founded in Silicon Valley, with offices in Peru, Mexico, and the United States. They have 15 years of experience designing and developing innovative solutions to help companies achieve their objectives.

US

  • Ship high quality, well tested, secure, and maintainable code.
  • Work individually or mentor a small group in an Agile development environment.
  • Participate in discussions about project architecture and technical feasibility; make decisions and justify your development approach.

Affinitiv is the largest provider of end-to-end, data-driven marketing and software solutions exclusively focused on the automotive customer lifecycle. They work with over 6,500 dealerships and every major manufacturer in the country and pride themselves on being the go-to experts in the industry.

Europe

  • Implement product features according to specifications and user stories
  • Participate in backend and API development
  • Fix bugs and improve existing functionality

Tieto Tech Consulting works as a true partner, solving clients’ toughest technology challenges and delivering reliable outcomes. By merging data, cloud, AI and design with deep industry expertise, they create impactful yet intuitive digital solutions that empower people and move businesses forward.

  • Design, develop, and maintain scalable and high-performance backend systems using .NET technologies
  • Contribute to system architecture decisions and lead the design of microservices-based solutions
  • Build and maintain RESTful APIs and ensure high availability and performance

Commencis has more than two decades of expertise in experience design, software engineering and cloud technologies. Their products and solutions are used by leading brands in financial services, insurance, airlines and retail in more than 20 countries. They value collaboration, curiosity, and an open mindset at work.

$145,000–$175,000/yr
US

  • Design & implement new features and endpoints in backend APIs
  • Design & implement schema changes to support these new features
  • Build high-quality, scalable, and testable code that will help drive engineering maturity and efficiency

Allocate is transforming private market investing by enabling RIAs and family offices to seamlessly discover, model, and manage their private market exposure. Our platform combines curated fund and co-investment opportunities with institutional-grade infrastructure and clients access top-tier opportunities across venture capital, private equity, private credit.

US

  • Design, develop, and maintain full-stack web applications using C# and .NET
  • Build modern, responsive user interfaces using React or Angular
  • Develop and integrate RESTful APIs and backend services

EX Squared LATAM partners with global clients to build high-impact digital solutions. They value technical excellence, collaboration, and continuous growth and are looking for a Mid-Level Full-Stack Developer to join its collaborative, fast-paced team.

Europe

  • Develop software applications according to specifications and project requirements.
  • Propose and define efficient, scalable technical solutions.
  • Maintain, optimize, and enhance existing applications.

LEONI is a global leading provider of products, solutions and services for energy and data management in the automotive industry. With around 86,000 employees in 21 countries, they are a leading supplier of complex wiring systems and customer‑specific cable harnesses. Since 2025, they have been part of the Luxshare Group, a global technology company headquartered in China, shaping the future of mobility.

Latin America

  • Develop and test code based on functional and technical specifications.
  • Participate in the full software development lifecycle (SDLC), including planning, estimation, and reviews.
  • Troubleshoot and resolve production issues to ensure system stability.

Blue Coding specializes in hiring developers from Latin America and other parts of the world, helping cutting-edge companies in the United States and Canada build development teams and develop products for the past 11 years. Their team of over 150 engineers, project managers, and designers is distributed in more than 10 countries across the Americas, fostering a connected, united, and culturally diverse environment.

US

  • Design, develop, and maintain reliable, scalable, and secure full-stack solutions.
  • Lead the design and implementation of scalable and maintainable back-end systems, ensuring alignment with business requirements and technical standards.
  • Write efficient and maintainable code using .NET technologies, following best practices for software development, including test-driven development and continuous integration.

Evry Health's mission is to bring humanity to health insurance with high-technology health plans that expand benefits, increase access/transparency and feature a personalized, human approach, ensuring members live happier, healthier lives. They are the major medical division of Globe Life (NYSE:GL), which has 16.8 million policies in force, and more than 3,000 corporate employees and 15,000 agents.

$80,237–$139,077/yr
US 3w PTO

  • Research, implement, and maintain software solutions using VB.NET and C#
  • Reverse engineering and debugging existing projects and solutions
  • Identify areas for improvement and modification in existing solutions

Experian is a global data and technology company, powering opportunities for people and businesses around the world. A FTSE 100 Index company listed on the London Stock Exchange, they have a team of 23,300 people across 32 countries and are headquartered in Dublin, Ireland.

US Unlimited PTO

  • Build, maintain, and improve APIs and services powering public-facing applications
  • Deliver performant, reliable backend solutions aligned to product requirements
  • Drive backend architecture and API design decisions that improve scalability, resiliency, and maintainability

PlayOn is a dynamic growth-stage company dedicated to championing the spirit of play in the high school space. Backed by KKR, their family of brands empowers schools with innovative solutions and exceptional service. Their culture is built on accountability, collaboration, growth, and fairness.

Canada

  • This is a full-stack Senior Developer role with a backend lean.
  • Investigate problems, propose solutions, scope your own work in collaboration with Product and QA, and ship.
  • Advisor-facing feature enhancements across existing ADX — payment workflows, service configuration, quoting and booking improvements.

TripArc, founded in 2017, is a $750 million privately held company that powers the top Travel Agencies and Tour Operators in North America. It has an expansive and growing network empowering seamless access to a comprehensive range of travel options and services globally, with over $750 million in transactions annually.

North America

  • Lead the complete development lifecycle for new features from design to deployment
  • Design and implement distributed systems and microservices architecture
  • Set up, deploy, and manage scalable cloud infrastructure with automation

Sigma Software collaborates with the Customer for 3 years, delivering solutions that save time, reduce compliance risks, and improve operational efficiency. They focus on simplifying payroll processing, ensuring tax compliance, and improving operational efficiency through seamless integrations with accounting systems.

Global

  • Be a part of a truly cross-functional team; Frontend, Back-End and Full-Stack Engineers, Product Teams, Designers and QA’s.
  • Participate in product planning (From discovery all the way to deployment); We want your input at all stages of the Software Development Lifecycle!
  • Collaborate! Our teams work together to develop robust new features, API’s, continuously improve our industry-leading products and find and fix any bugs at speed.

Deel is the all-in-one payroll and HR platform for global teams. As one of the largest globally distributed companies, their team of 7,000 spans more than 100 countries and brings a connected and dynamic culture that drives continuous learning and innovation.

Europe 5w PTO 26w maternity 26w paternity

  • Architecting, designing, building, and delivering highly available, always-on, zero-downtime API products and solutions
  • Collaborating with engineers, product owners, and other colleagues to seek exciting and results-oriented problems for delivering value
  • Writing clear, maintainable code that will scale

YLD helps clients build the skills and capabilities they need to stay ahead of the competition. They are a remote-first consultancy specializing in software engineering, product design, and data with teams based across London, Lisbon, and Porto.

US

  • Design, develop, and maintain ASP.NET Core APIs and backend services that support edge gateway and IoT device communication.
  • Build and optimize applications that interface with firmware over TCP sockets, local WiFi, and offline-tolerant architectures.
  • Write clean, maintainable, and well-tested code following established coding standards and best practices.

They are an Equal Opportunity Employer. They value diversity and are dedicated to creating a welcoming and inclusive workplace for individuals of all backgrounds and experiences.

LATAM

  • Build, optimize, and maintain scalable, high-performance APIs and backend services utilizing .NET Core 6 and above.
  • Design and implement dynamic, highly responsive user interfaces using ReactJS 18 and above.
  • Design data models and manage secure, efficient database interactions using Entity Framework Core (EFCore) and SQL Server.

We are a Managed Nearshore Teams provider headquartered in Austin, specializing in building and embedding high-performing software development teams. Our innovative model allows you to work on international challenges, collaborate with diverse teams, and grow your career.