Source Job

UK

  • Design and build backend services and APIs in C# and .NET/.NET Core, taking ownership of technical decisions.
  • Mentor and support less experienced engineers through code review, pairing, and technical guidance.
  • Champion engineering best practice, clean code, and thorough testing within cross-functional scrum teams.

C# .NET API Development Mentoring

20 jobs similar to Senior Software Engineer (.NET)

Jobs ranked by similarity.

Portugal

  • Develop and evolve backend commerce and payment platforms supporting subscriptions, billing, and global payment processing.
  • Build scalable .NET services and REST APIs, integrating payment providers and regional payment methods.
  • Collaborate with engineers, product, finance, and operations to deliver secure payment experiences.

LastPass delivers secure access essentials, managing access to AI, apps, and credentials. Trusted by 100,000+ businesses and millions of users, it fosters a remote-first, inclusive culture.

Brazil

  • Design, build and evolve scalable, secure backend services using a modern .NET stack and RESTful APIs.
  • Apply Clean Architecture, SOLID and KISS principles to keep code modular, reusable and simple.
  • Build event-driven integrations, work with databases, and contribute to CI/CD, testing and code reviews.

CI&T helps large enterprises transform AI into real business impact with AI deployment, AI-native execution, and tech-integrated business solutions. With 8,000 employees across more than 25 countries, they collaborate to build impactful solutions in a multicultural, fast-moving environment.

Saudi Arabia

  • Develop and maintain software applications using C#, .NET, and ASP.NET Core.
  • Build and support RESTful APIs and backend services in a remote-first environment.
  • Troubleshoot technical issues, provide production support, and contribute to CI/CD practices.

Brazil

  • Design, develop, and optimize backend services and APIs using C#, .NET Core, and .NET 8.
  • Work with microservices, Docker, Kubernetes, and Google Cloud Platform to ensure scalability and reliability.
  • Drive observability with Dynatrace, maintain automated tests, and collaborate in an Agile remote environment.

The company builds scalable digital solutions and drives digital transformation across multiple industries. It fosters a collaborative and inclusive culture focused on transparency, trust, innovation, and professional development.

Ukraine

  • Designing, coding, testing, and debugging software according to specifications and requirements.
  • Collaborating with stakeholders and product managers to transform system design into actual software.
  • Conducting unit tests, integration tests, and system tests while participating in scrum team activities.

Creatio is a global vendor of an agentic CRM & workflow platform with no-code and AI at its core, helping organizations automate customer and operational workflows. Supporting thousands of clients in over 100 countries, the company was named to Inc.'s Best Workplaces list in 2025, reflecting a strong workplace culture and commitment to employee wellbeing.

Europe

  • Develop and maintain scalable enterprise applications using C#, .NET Core, and ASP.NET Core.
  • Build backend services, RESTful APIs, and microservices with secure coding and performance optimization.
  • Collaborate with cross-functional teams in an Agile environment using Azure DevOps and CI/CD pipelines.

The company focuses on developing scalable enterprise applications and supporting digital transformation. It fosters a dynamic, collaborative, Agile environment with an emphasis on modern Microsoft technologies and continuous improvement.

Global

  • Build scalable enterprise web applications using ASP.NET MVC and modern AI-assisted development tools.
  • Work on a cross-functional Scrum team owning the full software development lifecycle from conception to deployment.
  • Develop responsive frontends with AngularJS or React and robust APIs using C#, .NET Core, and Azure SQL Server.

Drips provides an AI-powered conversational texting platform that enables brands to connect with consumers at scale. The company has experienced rapid growth, values community, and every team member has a direct impact on the company's success.

$90,000–$100,000/yr
US

  • Implement core features for the new auction platform, covering inventory management, financial transactions, and customer management.
  • Collaborate with engineers, product managers, and other teams to turn business requirements into maintainable, scalable software.
  • Develop high-quality C# code, design efficient data models, build CI/CD pipelines, and integrate with Azure services and third-party systems.

OnTrac is a logistics and delivery services company. It is supporting a large wholesale digital-marketplace customer through a contractor program to modernize their auction platform.

Canada

  • Design, code, test, and maintain components of an on-premises enterprise software product using C#/.NET.
  • Champion AI-assisted development, establishing best practices for AI coding agents and agentic workflows.
  • Collaborate with cross-functional teams in an Agile/SCRUM environment, mentoring others in secure AI tool usage.

Quest Software helps organizations secure, manage, monitor, protect, and analyze their IT infrastructure and data. Trusted by over 45,000 companies including 90% of the Fortune 500, Quest fosters a collaborative, innovative culture focused on practical technology solutions.

LATAM

  • Write production-grade code in C# and JavaScript/TypeScript across backend services and web applications.
  • Design scalable, fault-tolerant architectures and APIs while leveraging AWS services.
  • Mentor mid-level and junior developers and collaborate with product, design, and QA teams.

Ubiminds is a GPTW-certified, people-first company that partners with American software product companies to scale their global teams. We curate top LATAM talent and connect professionals with long-term, high-impact opportunities while providing full employer-of-record support.

US

  • Lead cross-team architectural strategy and establish scalable standards across large-scale digital platforms.
  • Solve complex technical challenges across web, mobile, and cloud infrastructure while contributing hands-on code.
  • Mentor senior engineers and drive technology evaluations, quality, and cross-functional collaboration.

The company operates large-scale digital platforms serving millions of customers across hospitality, entertainment, and commerce. It fosters a remote, collaborative engineering culture focused on innovation and technical excellence.

4w PTO

  • Design and develop applications and APIs using .NET/C# and modern architecture.
  • Build, deploy, and manage services on Microsoft Azure and optimize SQL Server databases.
  • Leverage agentic AI coding tools and mentor developers to raise engineering standards.

Fragomen is the leading global immigration law firm with more than 6,000 professionals in nearly 70 offices across the Americas, EMEA and Asia Pacific. The firm helps corporations and individuals navigate global mobility and is committed to diversity, inclusion, and innovation.

US

  • Lead complex technical initiatives end-to-end, guiding architecture decisions and mentoring engineers.
  • Design and evolve cloud-native architectures using microservices, event-driven systems, and API-first patterns.
  • Partner with Product, UX, QA, Security, and Infrastructure teams to deliver scalable SaaS solutions.

Elite is the trusted automation platform for law firm operations, providing the only cloud-native SaaS platform unifying financial, invoice, time, and data management. With a global team spanning multiple countries, Elite fosters an employee-centric, flexible remote culture.

$140,000–$180,000/yr
US

  • Lead development of robust, scalable, and maintainable software solutions using React, TypeScript, C# .NET, and Node.js.
  • Architect complex database schemas in MSSQL and manage AWS infrastructure with Terraform.
  • Champion best practices in code quality, testing, and CI/CD automation.

CentralReach provides software for autism and IDD care, serving ABA therapy providers, educators, and employers. Trusted by over 200,000 users, the company is recognized as a best place to work with a culture focused on impact, inclusion, and flexibility.

US 4w PTO

  • Lead and mentor developers while hands-on with C#/.NET and architecture.
  • Collaborate with U.S. and international teams on enterprise SaaS solutions.
  • Drive engineering standards, CI/CD, and technical improvements.

This partner is a growing global engineering organization focused on an enterprise-scale SaaS platform for automotive retailers and OEMs. They emphasize a collaborative, high-performing engineering culture with career growth opportunities.

Global

  • Build distributed C#/.NET microservices on Azure and Kubernetes with event-driven architecture.
  • Own services end-to-end, from design to production, with observability and on-call feedback.
  • Embrace AI-native engineering, using tools like Claude for design, code review, and testing.

M-KOPA is a fintech company providing flexible financing to under-banked customers in Africa for smartphones, e-motorbikes, and clean energy. With 10M+ customers served, it's a mission-driven, remote-first company and an FT-recognized fastest-growing firm.

$170,000–$180,000/yr
US

  • Manage and oversee complex software development initiatives, coordinating multiple development efforts supporting web services, software deployment, and partner framework integrations.
  • Lead Agile sprint teams in planning, prioritizing, and delivering software features in alignment with project requirements and organizational goals.
  • Oversee system and software architecture development, modernization of transaction monitoring and sanction screening systems, and full-cycle web application development.

Convera is a financial technology company that provides payment solutions, foreign exchange, and transaction monitoring services for high-volume operations. It supports a remote work culture and offers comprehensive global benefits to employees.

Latin America Europe

  • Build and evolve scalable, secure, and high-performing full-stack applications using .NET, C#, React, Redux, and JavaScript.
  • Design, implement, and maintain CI/CD pipelines and cloud-based solutions on Google Cloud Platform.
  • Mentor junior engineers, contribute to architecture decisions, and promote high code quality standards.

The partner company builds scalable, secure, and high-performing full-stack applications for clients. They foster a collaborative, remote-first engineering culture with an international team of technology professionals.

Europe

  • Building a reusable application platform with shared components and common development patterns.
  • Migrating existing business functionality while maintaining functional parity and documenting complex business rules.
  • Delivering incremental releases supported by automated testing, UAT, and post-release stabilization.

Xebia is a global AI-first digital transformation and engineering partner specializing in AI, data, cloud, and digital products. With over 25 years of experience, the company has 5,000 professionals across 16 countries and a people-first culture focused on engineering excellence.

Brazil

  • Design, develop, and maintain scalable web applications using .NET Core, C#, and ReactJS.
  • Mentor junior engineers, conduct code reviews, and promote engineering best practices.
  • Collaborate with product, design, and cross-functional teams throughout the full development lifecycle.

They build high-quality, scalable web applications for clients across various industries. Their fully remote team works in a fast-paced, collaborative environment with a focus on professional growth.