Source Job

Global

  • Drive development and maintenance of our .NET tenant management tooling and automation.
  • Design and build robust software solutions and APIs to eliminate manual work related to tenant creation, deletion, renaming, migration, and refresh processes.
  • Contribute to best practices and build out tools and frameworks to increase productivity of our Engineering group.

.NET Backend Engineering API Design Python C#

20 jobs similar to Senior .Net Backend Engineer

Jobs ranked by similarity.

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.

Global

  • Contribute to the development and maintenance of backend systems that power our web application, including search, content discovery, and AI capabilities.
  • Work closely with senior engineers and cross-functional partners to build reliable, scalable systems that deliver value to our customers while continuing to grow your technical expertise.
  • As a Software Engineer II for our Aura Agentic Interfaces team you will contribute to the design, development, and maintenance of backend systems and services.

Seismic is the global leader in AI-powered enablement, empowering go-to-market leaders to drive strategic growth and deliver exceptional customer experiences at scale. Trusted by more than 2,000 organizations worldwide, Seismic helps businesses achieve measurable outcomes and accelerate revenue growth.

  • 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.

US

  • Architect the AI core of our platform.
  • Use C# / .NET, Blazor, and LLM orchestration.
  • Work in an AI-native environment (Cursor, Claude Code).

Compyl is building autonomous GRC workflows that don't just surface risk, they act on it. They're a fast-moving SaaS company where developers ship daily and own what they build.

US

  • Partner with Sales, Customer Success, and Marketing to identify and prioritize high-leverage AI automation opportunities
  • Design, build, and deploy AI-enabled services and agent-based workflows end-to-end
  • Ensure solutions meet security, compliance, and governance standards

Quantum Workplace helps leaders build thriving teams that are aligned, empowered, and valued. They are an HR technology company with over 20 years in the space and have partnered with thousands of organizations.

North America Australia

  • Own the Workstream: You own projects from conception to deployment, translating high-level product goals into stable, scalable backend architecture.
  • Master a Fluid Scope: Your work will span credit cards, loans, and foundational technical debt based on sprint needs and your own interests.
  • Solve from First Principles: You articulate the root cause, define the trade-offs of various solutions, and implement the one that serves our customers best.

Tilt is creating a new credit system that backs the working, whatever they're working toward. They have extended $4.5B+ in credit by trusting that people are "good for it."

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.

US

  • Design, develop, and maintain APIs, and enterprise applications using modern frameworks (C#, .NET Core, React, Blazor, etc.)
  • Support development lifecycle processes: requirements gathering, design, development, testing, deployment, and ongoing maintenance.
  • Integrate AI capabilities into business systems using commercial AI services (e.g., OpenAI, Microsoft Copilot, Google Gemini, Azure Foundry/AI) and internal applications.

Concurrent Technologies Corporation (CTC) aims to integrate Artificial Intelligence (AI) across its business to improve internal operations and deliver new capabilities for clients. They have passionate teams that thrive on collaboration in a team environment.

Europe

  • 5+ years development experience with backend technologies, including experience with modern backend architecture.
  • 3+ years development experience with .NET/C# (with ASP.NET).
  • Experience building and deploying solutions on cloud services (Azure preferred).

Janea Systems (USA) is a dynamic team of the best & brightest software engineering specialists and solutions innovators, from around the world. From kernel to cloud, they provide high-impact software development services to Fortune 500 companies.

$150,000–$200,000/yr
US

  • You’ll help establish patterns, ship early AI-driven capabilities, and influence the technical direction of AI across multiple products.
  • This is a full-stack role where you will build and ship AI-powered features across the Momence platform.
  • Collaborate with teams across Momence, Mariana Tek, and other platforms to identify high-impact opportunities for AI.

Xplor provides cloud-based technology solutions to small and medium-sized businesses to help them manage and grow. They have over 130,000 businesses in 72+ countries rely on Xplor.

Europe

  • Architect, develop, and maintain scalable backend services for AI applications.
  • Integrate 3rd party APIs such as Twilio, WhatsApp, and OpenAI.
  • Design and improve multi-agent orchestration frameworks for AI conversations.

Tuotempo transforms healthcare experiences through intelligent digital solutions, offering a patient engagement platform. They empower medical professionals by streamlining operations and enhancing patient experiences with their cloud-based CRM system, boasting a remote-first culture with hubs in Bologna and Barcelona.

Europe

  • Design, develop, and maintain scalable, robust backend features and APIs using modern frameworks.
  • Ensure high performance and reliability across our distributed systems.
  • Contribute to systems powering authentication, billing, AI tooling, observability, connectors, and developer experience.

Mistral AI democratizes AI through high-performance, optimized, open-source and cutting-edge models, products, and solutions, with a comprehensive AI platform designed to meet enterprise needs. They are a dynamic and collaborative team passionate about AI, with a diverse workforce thriving in competitive environments and committed to driving innovation; their teams are distributed between France, USA, UK, Germany, and Singapore.

Engineer

Vesta
$180,000–$225,000/yr
US Unlimited PTO 11w maternity 11w paternity

  • Expected to be an owner of product areas and use experience to help Vesta create as much value as possible for customers.
  • Comfortable working in an early-stage startup environment where mission-critical work may occasionally require effort outside typical working hours.
  • Strong full-stack web development skills – experience working on products used by at least thousands of users.

Vesta is rebuilding the mortgage LOS from the ground up with an AI-augmented platform. They are transforming the mortgage industry and have raised $55M from top-tier investors; their team values humility, empathy, self-awareness, and an orientation towards action.

US Unlimited PTO

  • Lead and grow a team of engineers across a blended FTE/contractor model.
  • Own delivery outcomes for the School Nutrition platform, partnering with Product to shape the work.
  • Drive healthy engineering practices, including testing discipline, CI/CD, and incident response.

LINQ is a high-growth software company empowering K-12 district teams to do more with less by transforming K-12 school operations with cloud-based software solutions. They are trusted by 30% of school districts across the U.S. to help them operate more efficiently.

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.

$185,000–$210,000/yr
US

  • Own engineering delivery, maintenance, and production operations responsibilities.
  • Drive modernization and platform evolution, including cloud and architectural improvements.
  • Partner with Product, Architecture, and Data/AI stakeholders to deliver high-impact AI use cases.

HHAeXchange provides healthcare software solutions. It supports post-acute payers and providers seeking ways to deliver service to patients while maintaining compliance, with a focus on innovation and cost-effectiveness.

Canada Ireland Netherlands UK Unlimited PTO

  • Shape and scale the core infrastructure behind GitLab CI, integrating AI into CI/CD workflows.
  • Design, build, and iterate on AI-assisted and agentic CI experiences, defining patterns for measuring success and instrumenting behavior in production.
  • Harden the CI pipeline execution infrastructure, addressing database access patterns, background processing, and job orchestration for enterprise-scale AI-driven automation.

GitLab is the intelligent orchestration platform for DevSecOps, enabling organizations to increase developer productivity, improve operational efficiency, reduce security and compliance risk, and accelerate digital transformation. With over 50 million registered users, GitLab fosters a high-performance culture driven by values and continuous knowledge exchange, empowering team members to reach their full potential while collaborating with industry leaders to solve complex problems.

South America

  • Design and implement backend services using ASP.NET Core, Entity Framework, SignalR, and Minimal APIs.
  • Develop Python services and AI components with FastAPI, Django, Flask, Pandas, NumPy, and Scikit-learn.
  • Build and maintain microservices packaged with Docker and orchestrated via event-driven patterns using Azure Service Bus or RabbitMQ.

Resilient is seeking a Lead Fullstack Engineer to lead development of scalable, AI-enabled full stack solutions. They value innovation, collaboration, and delivering high-impact AI/ML products.

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.

Global

  • Design and implement high-performance, scalable back-end services and APIs using C# and ASP.NET Core.
  • Architect solutions for real-time financial data processing, trade surveillance, and portfolio analysis.
  • Build data pipelines and models for metrics dashboards, risk reporting, and performance analytics.

Kraken builds premium cryptocurrency products and trading platforms for a global user base. It is a fully remote company with employees in over 70 countries, operating with a mission-driven, crypto-native culture focused on security and innovation.