
Open
Posted
•
Ends in 5 days
Paid on delivery
I’m looking for a seasoned developer who can jump straight into our C#-centric codebase and keep pace with a busy release schedule. The bulk of your day will revolve around C#, but you’ll also dip into .NET Core, the classic .NET Framework, and occasionally front-end layers written in React.js with a Node.js back end. A minimum of five years in production environments across these stacks is essential—I need someone who already knows the quirks of each technology and can spot issues before they surface. Our team works 4 pm – 12 am UK time, Monday to Friday, so you’ll need to be consistently available during those hours for daily stand-ups, code reviews, and pair-programming sessions. Stable connectivity, clear spoken English, and a collaborative attitude are non-negotiable because most of our interaction happens over live video and shared IDE sessions. Compensation is set at $1,000 per calendar month, paid promptly at the end of each month. If that suits you, tell me about the specific C# and .NET projects you’ve led or heavily contributed to, focusing on measurable outcomes and the challenges you solved. I’m far more interested in concrete experience than in generic résumés, so point me to repos, live sites, or detailed anecdotes that prove your depth. This is an ongoing engagement, so I value reliability and clean, self-documenting code. If you thrive in a fast-paced, remote environment and can commit to the stated hours, I’d love to hear how your experience aligns with our stack and workflow.
Project ID: 40186371
165 proposals
Open for bidding
Active 20 hours ago
Location: United States
Set your budget and timeframe
Get paid for your work
Outline your proposal
It's free to sign up and bid on jobs
165 freelancers are bidding on average $1,067 USD for this job

Hello, I’m a senior C#/.NET developer with 5+ years in production across C#, .NET Core, the classic .NET Framework, and front-end work with React and Node. I can jump straight into your codebase and align with the 4 pm–12 am UK schedule for daily stand-ups, code reviews, and pair programming. My approach is to first map the current code quality, hotspots, and blockers, then stabilize the build and tests, and deliver incremental improvements with clean, self-documenting changes. I’ve led multi-project C#/.NET efforts that cut release cycles, boosted test coverage, and reduced production defects. I can share links to private repos or live sites on request, with concrete anecdotes showing how I resolved stack quirks across C#, .NET Core, React, and Node. What is the key business outcome you want from this role in the first quarter? What are the top three pain points you want addressed first? Do you need help with legacy .NET Framework code and migration to .NET Core/5+? What CI/CD tooling and deployment cadence do you prefer? Are there security or cloud constraints (Azure/AWS) I should plan for? What level of on-call support is expected given the schedule? What is the key business outcome you want from this role in the first quarter? Best regards,
$1,500 USD in 28 days
9.2
9.2

I’m a senior C#/.NET developer with 5+ years working in production across .NET Core, classic .NET Framework, and mixed stacks that include React and Node.js, so I’m comfortable moving quickly through legacy and modern codebases alike. I’ve contributed to and led features in high-release environments, focusing on stability, performance, and catching edge cases early through clean architecture and thorough reviews. Your 4 pm–12 am UK schedule works for me, and I’m used to daily stand-ups, pair programming, and live code reviews with distributed teams. I’m happy to share concrete examples of C#/.NET systems I’ve worked on, including measurable improvements and specific challenges solved.
$1,125 USD in 7 days
8.4
8.4

Hi there, ★★★ JavaScript / C# Programming / Amazon Web Services Expert ★★★ 9+ Years of Experience ★★★ To successfully complete this project, I will leverage my extensive experience in C# and .NET technologies. The key steps include: 1. Review the existing C# and .NET codebase (10 hours) 2. Participate in daily stand-ups and code reviews to understand team dynamics and project requirements (5 hours) 3. Collaborate on ongoing development tasks, focusing on clean and self-documenting code practices (15 hours) 4. Provide feedback and solutions for any issues identified during pair-programming sessions (10 hours) What I need from you: 1. Access to the current codebase and relevant documentation 2. A schedule for daily stand-ups and any important project timelines 3. Information about existing challenges or pain points in the current codebase I look forward to connecting at your convenience to ensure the project's success. Best Regards, TechPlus Team
$1,500 USD in 5 days
7.9
7.9

I have extensive experience in JavaScript, C# Programming, Amazon Web Services, C++ Programming, and Node.js, making me a great match for the Senior C#/.NET Developer Needed project. I am confident in my ability to tackle the challenges posed by your stack and workflow. While I understand the set budget, I am open to adjusting it based on a detailed discussion of the project scope. I am eager to start and committed to delivering high-quality results. Please go through my profile its 15 years old see the work I did over the years. No Win No Fee means that your satisfaction is my utmost priority. Lets discuss the job details. Moreover, I am willing to start the job and perform tasks without even being hired; it is just to show my commitment to this project. Looking forward to hear from you.
$1,050 USD in 21 days
7.6
7.6

Hi I’m a senior C# developer with strong production experience across .NET Core, classic .NET Framework, and React.js applications backed by Node.js APIs. A common technical risk in mixed .NET environments is hidden regressions caused by framework differences, async handling issues, and weak integration boundaries between backend and frontend layers. I address this by enforcing clean separation of concerns, defensive coding patterns, and proactive code reviews that catch lifecycle, threading, and dependency issues early. I’ve worked in fast release cycles where reliability depends on writing self-documenting C# code, solid unit coverage, and predictable build pipelines. On the frontend side, I’m comfortable debugging React state, API contracts, and performance issues that surface between Node.js services and .NET endpoints. I communicate clearly during live stand-ups, pair programming, and shared IDE sessions, and I’m used to collaborating closely in distributed teams. My focus is keeping velocity high without sacrificing stability, readability, or long-term maintainability of the codebase. Thanks, Hercules
$1,500 USD in 7 days
7.0
7.0

Hi there, I understand that you’re looking for a seasoned C#/.NET developer who can seamlessly integrate into your existing codebase and maintain the momentum of your busy release schedule. With over five years of robust experience in production environments, I have successfully led numerous projects using C#, .NET Core, and the classic .NET Framework, consistently delivering clean and self-documenting code. My comprehensive understanding of these technologies allows me to identify and address issues proactively, ensuring smooth progress during tight timelines. My availability aligns perfectly with your team’s hours from 4 pm to 12 am UK time, ensuring regular participation in stand-ups, code reviews, and pair programming sessions. I pride myself on my collaborative approach and have a proven track record of working effectively in remote team environments. You’ll find my communication clear and concise, making video calls and shared IDE sessions productive. I would love to discuss this opportunity further and share specific examples of my past projects that highlight measurable outcomes. Can you elaborate on the primary technical challenges your team has faced recently with the current C# codebase? Thanks,
$1,375 USD in 7 days
6.4
6.4

HELLO, I READ YOUR REQUIREMENTS CAREFULLY AND UNDERSTOOD THE EXPECTATIONS AND WORKING MODEL VERY CLEARLY. You need a reliable, experienced C# developer who can immediately integrate into a fast-paced release cycle, contribute confidently across backend and frontend layers, and collaborate closely during UK evening hours. I HAVE 10+ YEARS OF EXPERIENCE working in production environments with C#, .NET Framework, .NET Core, and mixed stacks that include React.js and Node.js backends. I have led and contributed to long-running systems where stability, performance, and clean architecture were critical, and I am comfortable identifying edge cases, legacy pitfalls, and scalability issues before they reach production. I regularly work with code reviews, pair programming, CI/CD pipelines, and live debugging in distributed teams. I AM FULLY AVAILABLE FROM 4 PM – 12 AM UK TIME, MONDAY TO FRIDAY, with stable connectivity and clear English communication. I value clean, self-documenting code and long-term reliability over short-term fixes, and I am comfortable providing concrete examples, repositories, or detailed case studies demonstrating real impact and measurable outcomes. I WILL PROVIDE 2 YEAR FREE ONGOING SUPPORT AND COMPLETE SOURCE CODE FOR ANY ASSIGNED MODULES. WE WILL WORK WITH AGILE METHODOLOGY AND I WILL INTEGRATE SEAMLESSLY INTO YOUR EXISTING WORKFLOWS AND RELEASE CADENCE. The monthly compensation and long-term engagement align well with my availability and goals. Thanks
$1,000 USD in 7 days
6.6
6.6

Hello, I understand you’re looking for a senior C#/.NET developer who can immediately integrate into a fast-moving production environment and contribute with minimal ramp-up. I bring extensive hands-on experience working with C#, .NET Core, and the classic .NET Framework in long-running, release-driven systems where stability, performance, and predictability are critical. I am accustomed to maintaining and extending mature codebases, identifying edge-case issues early, and delivering clean, self-documenting solutions that reduce future technical debt. My background includes building and supporting backend services, APIs, and business-critical workflows, while also collaborating confidently across React.js and Node.js layers when required. I am comfortable with cloud deployments on AWS and Azure, CI/CD pipelines, and structured code reviews in collaborative teams. Working consistent UK-evening hours, participating in live stand-ups, pair programming, and screen-sharing sessions is a normal part of my workflow. I value clear communication, proactive problem-solving, and ownership of deliverables, which aligns well with an ongoing engagement focused on reliability and measurable outcomes. Thanks, Asif
$1,500 USD in 11 days
6.6
6.6

Hi, I’m excited about the opportunity to join your team as we work on C#-centric projects. With over a decade of experience in production environments across C#, .NET Core, classic .NET Framework, React.js, and Node.js back ends, I can hit the ground running and contribute effectively from day one. I’ve led several high-profile projects where I’ve successfully managed complex codebases and ensured smooth release cycles. One notable project involved optimizing a C# backend for an e-commerce platform, reducing server load by 30% through efficient data caching and streamlining database queries. Another significant achievement was improving the reliability of our .NET Core microservices architecture, which reduced downtime from 5 hours per month to just 1 hour. I’m available during UK working hours (4 pm – 12 am) for daily stand-ups, code reviews, and pair-programming sessions. I have stable connectivity and clear spoken English, and I thrive in a remote, collaborative environment where real-time communication is key. You can check the portfolio on my profile for references. Best, Reed
$1,300 USD in 20 days
6.5
6.5

Hello, HAVE HANDS-ON EXPERIENCE WITH SUCH PROJECT I have 9+ years of proven experience working with C#, .NET Framework, .NET Core, and React/Node.js in production environments, and I clearly understand the expectations of a fast-paced release cycle. The goal is to reliably contribute to a C#-centric codebase with clean, scalable implementations while keeping pace with frequent releases and collaborative workflows. -->> Core C# development across .NET Framework and .NET Core -->> Issue spotting, refactoring, and performance-focused improvements -->> Frontend collaboration with React.js and Node.js layers -->> Clean, self-documenting code with active code reviews and pair programming Approach: clean architecture, secure and maintainable code, efficient cross-stack integration, and agile delivery. successfully implement this project from start-to-finish. Let's come together and create a platform that not only propels your business but also stands out prominently within the marketplace. Thanks & regards Julian
$750 USD in 7 days
6.5
6.5

Hi Dyland S. I have 7+ years building C# backends across .NET Core and .NET Framework, leading delivery of a payments microservice that reduced latency 40% and increased throughput 3x. I also led a migration of a legacy .NET Framework monolith to .NET Core, cutting deployment times from hours to minutes while stabilizing daily releases. I will jump into your codebase to fix critical issues, add tests, and optimize performance while contributing to React/Node front-ends when needed. I work during your 4pm–12am UK window with shared-IDE pair-programming, CI-driven TDD, and clear PRs that include benchmarks and rollback plans. Why We Work Together: - Proven record with C# and urgent release cadences. - Experience migrating and stabilizing .NET systems under heavy load. - Strong communicator for remote pair-programming and live reviews. Best Regards, Sherman
$1,125 USD in 7 days
5.9
5.9

Hello, I have carefully analyzed your requirements and previously worked in fast-paced production environments maintaining and extending C#/.NET Core and classic .NET Framework systems, while also contributing to React.js frontends and Node.js backends under tight release schedules. For this role, I bring over five years of hands-on experience building, debugging, and optimizing C# applications, participating in code reviews, pair programming, and live collaboration, and proactively identifying issues before they reach production. I am comfortable working within structured workflows and aligning with team standards for clean, maintainable code. I am available to begin work immediately and am committed to delivering high-quality contributions within your stated hours and expectations. Best regards, Elenilson
$1,000 USD in 7 days
5.5
5.5

Hi, I’m a senior C#/.NET developer with 10+ years of production experience working in fast-paced environments and tight release cycles. My core expertise is C#, spanning both classic .NET Framework and .NET Core, where I’ve built and maintained business-critical systems with a strong focus on reliability, performance, and clean architecture. I’m comfortable jumping into existing codebases, understanding complex logic quickly, and identifying issues before they surface in production. I’ve worked extensively with REST APIs, background services, and data-heavy applications, and I regularly collaborate with frontend teams using React.js and Node.js to ensure smooth integrations and stable releases. I can fully commit to your 4 pm–12 am UK schedule and am used to daily stand-ups, code reviews, and pair programming in remote teams. I communicate clearly in spoken English, work efficiently over video and shared IDE sessions, and maintain stable connectivity. I value clean, self-documenting code and long-term reliability. I’m happy to discuss specific C# and .NET projects I’ve contributed to, including real challenges solved and measurable outcomes. The compensation and ongoing engagement align well with my expectations, and I’d be glad to support your team consistently. Best regards, Santhi
$1,125 USD in 30 days
7.2
7.2

As a seasoned C#/.NET developer with over five years of in-depth experience across the exact technology stacks you need, I am confident that I am the perfect fit for your project. I have a strong command of not just C# and .NET Core, but also Node.js and React.js- skills that are necessary for versatile problem-solving in your multi-layered codebase. Moreover, my familiarity with tools such as Visual Studio and Git enhance my efficiency, ensuring clean, self-documenting code- precisely what you're looking for. Besides my technical abilities, my outstanding communication skills and adaptability will make working across time zones seamless. Being available throughout your team's working hours won't be an issue for me at all. My networking expertise with databases like SQL Server and Oracle and proficiencies in API integration using ASMX, WCF, and REST means that I can spot potential issues proactively and address them effectively before they become a hindrance in the production process. In conclusion, not only do I bring robust expertise to your coding needs, but also a dedication to collaboration, reliability, and delivering measurable outcomes. My skillset is perfectly aligned to meet your high-paced remote working environment requirements. Let's discuss how we can achieve great results together!
$1,125 USD in 7 days
5.2
5.2

I’ve led several C#/.NET projects in fast-paced, Agile environments, most recently supporting a healthcare platform that needed rapid feature delivery while maintaining high code quality. There, I balanced work across .NET Core and the classic Framework—addressing thread-safety issues and improving API performance by 20%. This included reviewing React front ends integrated with Node.js back ends, so I’m familiar with the full stack you described. I’m comfortable with your 4 pm–12 am UK time window and have stable connectivity to join live video calls and pair-programming sessions. In past roles, this close collaboration helped catch integration bugs early and ensured smooth release cycles. A quick question: How do you currently handle environment setup for devs joining the codebase? I’ve found scripted setups and containerization can save time when onboarding new engineers. I’m ready to dive in, review your existing code, and contribute clean, well-documented solutions to keep your releases on track. Let’s get started.
$1,500 USD in 7 days
5.0
5.0

Hi, I can jump directly into a C# heavy environment and contribute immediately across .NET Core, classic .NET Framework, and the React and Node layers when needed, with a strong focus on release stability and clean production delivery. I have over five years of hands on experience building and maintaining .NET systems including API platforms, background processing services, and enterprise applications where reliability, performance, and safe iteration were critical. I have led feature delivery through tight release cycles, resolved complex runtime issues, improved deployment confidence with better logging and testing, and supported modern React front ends integrated with Node based services. I am comfortable spotting framework specific pitfalls early, whether that is dependency injection behavior in .NET Core, legacy constraints in .NET Framework, or cross stack integration problems between frontend and backend. I work with clear PR discipline, self documenting code, and collaborative pair programming workflows. I can commit consistently to the 4 pm to 12 am UK schedule, communicate clearly over video, and provide reliable long term support within your monthly budget. Best Best Alex
$1,500 USD in 20 days
5.4
5.4

Hello, I understand you're seeking a seasoned C#/.NET developer to dive into your fast-paced codebase. I bring over five years of experience in C# and .NET development, adept at navigating both .NET Core and the classic Framework, alongside proficiency in React.js and Node.js. I have successfully led multiple projects, focusing on delivering clean, self-documenting code that not only meets but exceeds client expectations. My approach includes proactive issue-spotting to ensure seamless integration and delivery. Please see my portfolios for specific examples of my work and measurable outcomes. Regards, Davide
$800 USD in 12 days
4.8
4.8

Hello Client, thanks for considering my proposal. I have a solid understanding of your need for a Senior C#/.NET Developer who can seamlessly integrate into your existing codebase and keep up with your demanding release schedule. My approach involves leveraging my extensive experience in C# Programming, .NET Core, and React.js to ensure that I meet your requirements effectively. With over five years of experience in production environments across these technologies, I am well-equipped to handle the quirks and challenges that may arise. My expertise in JavaScript, C# Programming, Node.js, React.js, and Amazon Web Services align perfectly with the skills required for this project. I have successfully led and contributed to various C# and .NET projects, delivering measurable outcomes and overcoming complex challenges. I am committed to clear communication and collaboration, ensuring that we work seamlessly together to achieve your project goals. Best regards, Justin
$1,200 USD in 7 days
4.8
4.8

Hi There!!! The Goal of the project:- PROVIDE A SENIOR C# AND .NET DEVELOPER WHO CAN EFFICIENTLY MAINTAIN AND ENHANCE A COMPLEX CODEBASE WHILE KEEPING PACE WITH A BUSY RELEASE SCHEDULE. I have carefully read and understood that you need a developer experienced in C#, .NET Core, .NET Framework, and familiar with React.js and Node.js, who can work reliably from 4 pm to 12 am UK time for daily stand-ups, code reviews, and pair programming, delivering clean and self-documenting code. I am the best fit for this project because I bring proven expertise in maintaining fast-paced C# and .NET environments with a focus on reliability and code quality. One hands-on experience with production C# and .NET Core applications Two familiarity with classic .NET Framework and React.js front-end integrations Three strong track record of working in remote, collaborative environments within fixed time zones I provide UI design, database management, testing, full source code delivery, and essential documentation for project handoff. I have 5+ years experience as a full stack developer and have successfully led and contributed to multiple C#/.NET projects with measurable performance and stability improvements. Looking forward to chat with you for make a deal Best Regards Elisha Mariam!
$759 USD in 16 days
4.9
4.9

Hello, I am a senior C# .Net developer with 13+ years of hands-on production experience working across .Net framework, C#, .Net Core and modern front end stacks including React.js, and Node.js I am fully available 4 pm – 12 am UK time, Monday to Friday, with stable internet, professional work setup, and good spoken English. I have long-term mindset, clean, readable, self-documenting code that other developers can maintain confidently. The $1,000/month compensation and ongoing nature of the engagement work for me, and I value consistency and long-term collaboration just as much as you do. If you’re looking for someone who can integrate fast, keep pace with releases, and raise code quality—not slow the team down—I’d be glad to discuss next steps. I have been working with an organisation where I work on in house development, so disclosing the repos and live sites is not permitted. Best Regards, Krish Bhaduri
$1,000 USD in 30 days
5.0
5.0

Ashburn, United States
Member since Sep 3, 2025
$750-1500 USD
$10-30 USD
₹1500-12500 INR
$15-25 USD / hour
£20-250 GBP
$250-750 USD
₹1500-12500 INR
₹2000 INR
$10-30 USD
$250-750 USD
$15-25 USD / hour
$250-750 USD
₹1250-2500 INR / hour
$250-750 USD
$30-250 USD
$15-25 USD / hour
$12000-24000 HKD
€30-250 EUR
$10-30 USD
$250-750 CAD
₹37500-75000 INR
$750-1500 USD