CrawlJobs Logo

Senior .NET Migration Engineer

weareorbis.com Logo

Orbis Consultants

Location Icon

Location:
United Kingdom , London

Category Icon

Job Type Icon

Contract Type:
Not provided

Salary Icon

Salary:

250000.00 GBP / Year

Job Description:

Critical Hedge Fund Migration – Senior .NET Migration Engineer. I’m working with a large Hedge Fund who are looking for a Senior .NET Migration Engineer for a 6-month rolling FTC to join a small, focused team and help deliver this migration successfully. This is a New York City–based role with a strong preference for 3 days per week in-office. The ideal candidate has led or contributed meaningfully to previous .NET migrations, and understands both the challenges and the opportunities that come with evolving a legacy codebase into a more modern stack. There’s no need for financial services experience – what matters most is a solid track record of migrating real-world systems across .NET platforms, and a sharp eye for both quality and scalability.

Job Responsibility:

  • Taking technical ownership of major parts of the migration from .NET Framework on Windows to .NET Core running on Kubernetes
  • Refactoring, rewriting, and modernising legacy codebases for performance, reliability and maintainability
  • Supporting containerisation efforts with Docker and Helm, targeting deployment into Kubernetes
  • Working within the client’s CI/CD environment (TeamCity, Octopus Deploy, GitHub Actions) to support seamless integration of new components
  • Advising on architectural best practices during the migration process, and helping mentor internal team members where needed

Requirements:

  • Deep experience with both .NET Framework and .NET Core, and demonstrable experience migrating between the two
  • Strong hands-on knowledge of Entity Framework, including the differences and pitfalls when porting to .NET Core
  • Practical experience with ASP.NET in legacy and modern contexts
  • Solid skills with Kubernetes, Docker, and Helm – ideally having deployed and operated .NET applications in containerised environments

Additional Information:

Job Posted:
December 11, 2025

Employment Type:
Fulltime
Work Type:
Hybrid work
Job Link Share:

Looking for more opportunities? Search for other job offers that match your skills and interests.

Briefcase Icon

Similar Jobs for Senior .NET Migration Engineer

Senior C# Developer – Pricing Engines

Join a fast-paced trading tech environment where your C# code powers real-time p...
Location
Location
Netherlands , Amsterdam
Salary
Salary:
Not provided
levy-professionals.com Logo
Levy Professionals
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Extensive experience with C#/.NET in complex back-end or trading systems
  • Proven low-latency, high-throughput engineering expertise (ideally in pricing or market data)
  • Deep knowledge of concurrency, async IO, performance tuning, profiling, TCP/binary protocols
  • Strong understanding of financial markets: FX spot/forwards/swaps, bonds, IR swaps, curves, PV/DV01
  • Experience working with front-office stakeholders
  • Clear communication and the ability to simplify complex concepts
Job Responsibility
Job Responsibility
  • Build high-performance C# services on .NET Core for real-time pricing and risk
  • Refactor and migrate existing C# and Java components into a unified .NET Core platform
  • Optimise multithreading, memory, GC and network performance on bare-metal servers
  • Implement curve handling and curve location for FX, bonds and rates
  • Integrate with trading tools, market data feeds and external pricing/execution platforms
  • Ensure safe, efficient price distribution via internal messaging
  • Contribute to automated testing, CI/CD and observability in a 24/7 trading setup
  • Work in an agile DevOps team with shared support responsibilities
Read More
Arrow Right

Senior Software Engineer (.NET)

Software Resources has an immediate, long term contract job opportunity for a Se...
Location
Location
United States , Celebration, FL
Salary
Salary:
Not provided
softwareresources.com Logo
Software Resources
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Minimum 5 years of professional software engineering experience, with a strong emphasis on .NET development
  • Expert knowledge of C#, .NET Framework, .NET Core/6+, ASP.NET Web API, and related technologies
  • Experience developing and supporting applications using relational databases (SQL Server, Oracle, or both)
  • Strong understanding of API design, RESTful services, and WCF service architectures
  • Experience supporting production systems, including troubleshooting, debugging, and incident response
  • Familiarity with Agile methodologies (standups, sprint planning, story grooming, retros)
  • Experience with CI/CD pipelines and tooling such as Azure DevOps, GitLab, GitHub Actions, or Jenkins, including automated builds and deployments
  • Experience with Docker and containerized applications
  • Experience using monitoring/logging tools (such as Grafana, AppDynamics, Splunk, ELK, or similar)
  • Understanding of software engineering best practices including unit testing, documentation, and code reviews
Job Responsibility
Job Responsibility
  • Support and enhance shipboard .NET applications used by multiple Crew operational teams
  • Contribute to modernization efforts, including possible rewrite prep with analysis of legacy shipboard systems
  • Work on applications that must perform in a disconnected on-prem environment (ship’s network only, no internet)
  • Build and maintain integrations with other systems
  • Partner with shipboard operations, Crew Office leadership, safety operations, and technical partners to deliver stable, user-focused solutions
  • Lead or contribute to analysis, design, programming, debugging, and enhancement of .NET applications supporting Crew Systems
  • Support L2/L3 ticket triage, defect analysis, root-cause investigations, and incident resolution for shipboard systems
  • Develop and maintain WCF backend services, RESTful APIs, and WPF UI components using .NET Framework and .NET Core
  • Build software solutions that must perform reliably in distributed, sometimes offline, shipboard environments
  • Write clean, testable, maintainable code and participate in code reviews
What we offer
What we offer
  • medical, dental, and vision coverage
  • a 401(k) with company match
  • short-term disability
  • life insurance with AD&D
Read More
Arrow Right

Senior Platform Engineer

The Capture team at Medius processes millions of invoices through a cloud‑native...
Location
Location
Poland , Cracow
Salary
Salary:
Not provided
medius.com Logo
Medius
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Experience as a senior engineer working in cloud‑native Azure and .NET environments
  • Proven track record of improving engineering effectiveness in areas such as throughput, stability, observability, and developer experience
  • Strong proficiency in C#, .NET, and Azure services
  • Ability to analyse systemic problems and design robust abstractions rather than localized fixes
  • Strong collaborative mindset, with experience in pair programming, mentoring, and driving technical alignment
  • Excellent communication skills and fluency in English for effective cross‑team collaboration
Job Responsibility
Job Responsibility
  • Identify, prioritize, and implement solutions for impactful cross‑cutting concerns such as reliability, scalability, security, developer experience, and customer experience
  • Strengthen shared platform components and libraries in a mature codebase, balancing pragmatic improvements with long-term architectural evolution in close collaboration with product engineers
  • Improve testing practices and quality assurance across the platform—whether through better test frameworks and data management, contract testing for service boundaries, or strategies that make legacy code more testable without requiring full rewrites
  • Modernize deployment practices and infrastructure as the platform migrates from Service Fabric to AKS, improving reliability and release velocity for a production system serving millions of invoices
  • Raise engineering quality through pair programming, thoughtful code reviews, and clear technical communication
  • Collaborate closely with engineers across the team to promote best practices, knowledge sharing, and consistent architectural patterns
What we offer
What we offer
  • Great Team
  • Opportunity for Career & Professional Development
  • Collaborative and Meritocratic work culture
  • Supportive Leadership
  • Free snacks
  • Reversed mentorship program
  • Medical, dental, and vision coverage
  • Paid time off
  • Retirement benefits
Read More
Arrow Right

Senior Backend Engineer (.Net)

This position allows you to join a fast-growing technology organization redefini...
Location
Location
Argentina , Buenos Aires
Salary
Salary:
Not provided
parserdigital.com Logo
Parser Limited
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • +7 years of experience with .NET (C#)
  • Proficiency in databases (MySQL, Postgres, NoSQL)
  • Experience in Continuous Integration and Delivery Tools: Kafka, Docker, Kubernetes, Git, Jenkins
  • Proficiency in AWS (using, deploying and maintaining services)
  • Proficiency in Terraform
  • Familiarity with API creation and RESTful services
  • Excellent written and verbal English communication skills
  • Proactivity and capacity to bring well thought solutions
Job Responsibility
Job Responsibility
  • Develop and maintain backend services in .NET (C#) using both .NET Core and legacy .NET Framework
  • Lead and execute migration of legacy services to cloud-native solutions using AWS
  • Implement and manage infrastructure as code using Terraform
  • Containerize and deploy services on AWS ECS / Fargate
  • Maintain and support live environments and CI/CD pipelines
  • Ensure software quality, performance, and reliability during development and deployment cycles
What we offer
What we offer
  • The chance to join an organization with triple-digit growth that is changing the paradigm of how software products are built
  • The opportunity to form part of an amazing, multicultural community of tech experts
  • A flexible and remote working environment
  • Fulltime
Read More
Arrow Right

Senior .NET developer

We are looking for a highly skilled Senior .NET Developer to support a major app...
Location
Location
United States , Jersey City, NJ; Charlotte, NC; Addison, TX
Salary
Salary:
115000.00 USD / Year
realign-llc.com Logo
Realign
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Primary Skill: .NET Framework 8, .NET Core 8, SQL Server, Rest APIs
  • Secondary: UI – Cockroach DB, Kafka
  • Experience: Minimum 10 years
  • Strong experience with .NET Framework 4.8
  • Hands-on expertise in .NET Core 6/7/8 (preferably .NET 8)
  • Solid experience with Web API development
  • Strong command of SQL Server, including stored procedures, indexing, query tuning
  • Experience upgrading, refactoring, or re-engineering legacy .NET applications
Job Responsibility
Job Responsibility
  • Lead the modernization of applications from .NET Framework 4.8 to .NET Core 8, ensuring improved performance, security, and maintainability
  • Design and develop RESTful Web APIs using .NET Core 8
  • Participate in and contribute to the migration of SQL Server workloads to CockroachDB, including schema transformation, data migration, and performance tuning
  • Refactor legacy code, introduce best practices, and drive engineering standards across the team
  • Collaborate with architects, database engineers, and DevOps teams to ensure seamless modernization
  • Troubleshoot production and lower-environment issues related to APIs, services, and database integrations
  • Participate in Agile ceremonies, code reviews, and technical discussions
  • Document technical workflows, architectural components, and migration steps
  • Fulltime
Read More
Arrow Right

Senior .NET Engineer

Workplace Services Engineering (WSE) is an organization within Schwab Technology...
Location
Location
United States , Austin; Southlake
Salary
Salary:
110000.00 - 165000.00 USD / Year
schwab.com Logo
Charles Schwab
Expiration Date
April 11, 2026
Flip Icon
Requirements
Requirements
  • 8+ years of related progressive software engineering experience including hands-on coding and architectural design
  • BS/MS degree preferred or equivalent experience
  • Proven experience modernizing enterprise platforms, including API development, microservices, and cloud‑native engineering
  • Proficiency in .NET Core/.NET 8+, C#, ASP.NET Core, and Entity Framework Core
  • Experience designing and delivering distributed systems and containerized workloads (Docker, Kubernetes)
  • Strong background in DevOps, CI/CD pipelines, automation, and operational excellence
  • Experience working in Agile/SAFe environments, including leading SCRUM teams and iterative delivery
  • Familiarity with cloud platforms (GCP, AWS, Azure) and platform migration or modernization initiatives
  • Knowledge of SQL Server and relational data modeling fundamentals
  • Understanding of engineering best practices related to security, performance optimization, and platform resilience
Job Responsibility
Job Responsibility
  • Lead efforts to transform legacy systems into resilient, cloud‑ready architectures that enable innovation at scale
  • Collaborate across engineering, product, and business teams to drive modernization, stability, and continuous improvement
What we offer
What we offer
  • 401(k) with company match and Employee stock purchase plan
  • Paid time for vacation, volunteering, and 28-day sabbatical after every 5 years of service for eligible positions
  • Paid parental leave and family building benefits
  • Tuition reimbursement
  • Health, dental, and vision insurance
  • Bonus or incentive opportunities
  • Fulltime
!
Read More
Arrow Right

Senior .NET developer

We are looking for a highly skilled Senior .NET Developer to support a major app...
Location
Location
United States , Jersey City; Charlotte; Addison
Salary
Salary:
115000.00 USD / Year
realign-llc.com Logo
Realign
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Primary Skill: .NET Framework 8, .NET Core 8, SQL Server, Rest APIs
  • Secondary: UI – Cockroach DB, Kafka
  • Experience: Minimum 10 years
  • Strong experience with .NET Framework 4.8
  • Hands-on expertise in .NET Core 6/7/8 (preferably .NET 8)
  • Solid experience with Web API development
  • Strong command of SQL Server, including stored procedures, indexing, query tuning
  • Experience upgrading, refactoring, or re-engineering legacy .NET applications
  • Strong problem solving and analytical skills
  • Excellent communication and collaboration abilities
Job Responsibility
Job Responsibility
  • Lead the modernization of applications from .NET Framework 4.8 to .NET Core 8, ensuring improved performance, security, and maintainability
  • Design and develop RESTful Web APIs using .NET Core 8
  • Participate in and contribute to the migration of SQL Server workloads to CockroachDB, including schema transformation, data migration, and performance tuning
  • Refactor legacy code, introduce best practices, and drive engineering standards across the team
  • Collaborate with architects, database engineers, and DevOps teams to ensure seamless modernization
  • Troubleshoot production and lower-environment issues related to APIs, services, and database integrations
  • Participate in Agile ceremonies, code reviews, and technical discussions
  • Document technical workflows, architectural components, and migration steps
  • Fulltime
Read More
Arrow Right

Head of Development and Engineering

We are seeking an experienced Head of Development & Engineering to lead our tech...
Location
Location
United States
Salary
Salary:
200000.00 - 230000.00 USD / Year
evercommerce.com Logo
EverCommerce
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Bachelor’s or Master’s degree in Computer Science, Software Engineering, or related field
  • 10+ years in software engineering roles, with at least 5 years in senior leadership
  • Proven track record of leading large-scale system migrations (VB6 to .NET preferred)
  • Experience driving cloud migration strategies and SaaS product transformation
  • Exceptional verbal and written communication skills
  • Strong proficiency with Microsoft .NET technologies (C#, .NET Core, ASP.NET)
  • Proven leadership in guiding teams implementing microservices architecture, containerization (Docker, Kubernetes), and cloud platforms (Azure, AWS, or GCP)
  • Familiarity with CI/CD, DevOps practices, and modern software delivery pipelines
  • Knowledge of relational and NoSQL databases
  • Proficiency with tools including Jira, Confluence, Mural, Excel, and other Agile related platforms
Job Responsibility
Job Responsibility
  • Lead the migration of legacy VB6 systems into modern .NET environments
  • Architect and guide the transition of monolithic applications into microservices-based, cloud-native SaaS solutions
  • Ensure scalability, security, and high availability across all modernized platforms
  • Advocate, evangelize, and instantiate AI-powered design, build, and implementation of SW code development, review, and QA/QC
  • Align to the conceptual and logical models that support technical modernization and long-term technical strategies per CTO’s enterprise architecture
  • Working to Iterative-Agile frameworks (Scrum, LeSS, Kanban…) and embed Design/System Thinking into team’s culture
  • Lead, mentor, and inspire engineering teams to embrace AI technologies to the fullest extent possible, leading design methodologies, and best practices
  • Establish clear engineering standards, code quality practices, and review processes
  • Serve as a change agent to guide teams and stakeholders through major technology transitions, instantiate a coherent, measurable AI-powered SW Engineering team
  • Communicate technical strategies and progress effectively to both technical and non-technical stakeholders
What we offer
What we offer
  • Continued investment in your professional development
  • Day 1 access to a robust health and wellness benefits package, including an annual wellness stipend
  • 401k with up to a 4% match and immediate vesting
  • Flexible and generous (FTO) time-off
  • Employee Stock Purchase Program
  • Fulltime
Read More
Arrow Right