.NET Migration Engineer Job at Orbis Consultants (London)

Senior .NET Migration Engineer

Critical Hedge Fund Migration – Senior .NET Migration Engineer. I’m working with...

Location

United Kingdom , London

Salary:

250000.00 GBP / Year

Orbis Consultants

Expiration Date

Until further notice

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

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

Fulltime

Middle .Net Engineer

Vention is a global engineering partner to tech leaders and fast-growing startup...

Location

Georgia , Tbilisi

Salary:

Not provided

Vention

Expiration Date

Until further notice

Requirements

C# / .NET (ASP.NET Core) - strong, production-level experience
Deep SQL and database performance knowledge: execution plans, indexing, SARGability, data types, query profiling
confident in interpreting execution plans
EF Core and Dapper: understand when and why to choose one over the other (heavy read paths, SQL shape, ORM overhead)
Production debugging & performance engineering: real-world troubleshooting cases, step-by-step reasoning, use of profilers/logs/metrics/traces
Microservices and monolith decomposition: hands-on migration experience, risk assessment, testing, parallel runs, cutover strategies
Async/await and concurrency: async/await behavior, deadlock analysis, batching, parallelization, distinguishing I/O vs CPU tasks
Testing: unit, integration, boundary tests, proper mocking
understanding when architectural/contract tests are needed
High-load systems: experience stabilizing/scaling systems handling tens–hundreds of RPS and 100k+ daily events, using queues/buffering

Job Responsibility

Deliver features end-to-end: requirements clarification, design, implementation, testing, deployment, observability, and optimization
Production debugging & performance engineering: analyze slow SQL (execution plans, DMVs), optimize EF Core (AsNoTracking, Includes, SQL shape), fix N+1 issues, design caching strategies (read replicas, Redis), debug deadlocks and async/await issues, resolve front-end freezes caused by large payloads
Optimize SQL and database performance: execution plan analysis, SARGability, indexing, avoiding full scans, proper joins and type matching, making informed choices between Dapper and EF Core
Participate in monolith decomposition: apply strangler pattern, minimize downtime, define domains properly, implement async/event-driven integrations, ensure correct transaction boundaries
Maintain strong observability: structured logging, tracing, dashboards, and alerts (Serilog, DataDog, OpenTelemetry)
Collaborate across teams: negotiate contracts, mock dependencies, and unblock yourself without constant supervision

What we offer

EDU corporate community (300+ members): tech communities, interest clubs, events, a small R&D lab, a knowledge base, and a dedicated AI track
Licenses for AI tools: GitHub Copilot, Cursor, and others
24 working days of vacation per year
Expanded medical insurance
Corporate getaways & team building activities
Fitpass sport program
Support for significant life events
Access to discounts across a variety of stores, restaurants & cafes through a corporate discount program
Referral bonuses for bringing in new talent

Fulltime

.NET Software Engineer

We are looking for a skilled .NET Software Engineer to join our team in Rock Isl...

Location

United States , Rock Island

Salary:

Not provided

Robert Half

Expiration Date

Until further notice

Requirements

A minimum of 5 years of experience in software development with a focus on .NET technologies
Proficiency in C# programming and JavaScript for full-stack or specialized development
Hands-on experience with Azure DevOps and GitHub for version control and build release management
Familiarity with Blazor or Service Bus and their application in software solutions
Strong understanding of Agile methodologies and experience working in Agile SDLC environments
Solid knowledge of Microsoft SQL Server and API development practices
Excellent problem-solving skills and attention to detail
Strong communication and collaboration abilities to work effectively within a team

Job Responsibility

Develop, test, and maintain software applications using the latest .NET technologies, including .NET 2022
Collaborate with cross-functional teams in an Agile environment to deliver robust and scalable solutions
Write clean, efficient, and well-documented code using C# and JavaScript
Utilize tools like Azure DevOps to manage code repositories and streamline development workflows
Contribute to API development and integration to enhance platform functionality
Work with technologies such as Blazor and Service Bus to build modern, user-friendly applications
Participate in Agile ceremonies, including sprint planning, stand-ups, and retrospectives
Ensure software quality through rigorous testing and adherence to best practices
Stay updated on industry trends and emerging technologies to continuously improve development processes
Assist in the migration of code and processes to Azure DevOps as needed

What we offer

medical, vision, dental, and life and disability insurance
eligible to enroll in our company 401(k) plan

Fulltime

Programmer Analyst

Location

United States , Frisco

Salary:

Not provided

InfoSmart Systems

Expiration Date

Until further notice

Requirements

Bachelor in Engineering with 2
Prepare requirement and detailed design documents
Experience with migrating applications from .Net 1.1 to .Net 3.5
Design and development using C#, ASP.Net, VB.Net
Involve in deploying the application, System Integration Test, User Acceptance Test with client
Involve in creating database tables, writing stored procedures and constraints using SQL Server 2008

Senior C# Developer – Pricing Engines

Join a fast-paced trading tech environment where your C# code powers real-time p...

Location

Netherlands , Amsterdam

Salary:

Not provided

Levy Professionals

Expiration Date

Until further notice

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

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

Site Reliability Engineer/ Sr DevOps

We are offering a contract to permanent employment opportunity for a Site Reliab...

Location

United States , Woodland Hills

Salary:

Not provided

Robert Half

Expiration Date

Until further notice

Requirements

Minimum of 5 years experience in a similar role
Proven expertise in Amazon EC2
Experience with Ansible for configuration management
Knowledge of Apache ANT+ and Apache Tomcat
Familiarity with Atlassian Jira for project management
Experience in AB Testing methodologies
Proficiency in Agile Scrum methodologies
Demonstrated skills in automation processes
Comprehensive understanding of AWS Technologies
Ability to perform Cluster Analysis

Job Responsibility

Architect and design applications for migration, ensuring they align with compliance standards and best practices
Actively participate in building solutions and gain an acute understanding of core infrastructure services and their interaction with applications
Provide technical leadership to offshore teams, aiding in the distribution of leadership tasks
Execute scripting tasks within a C# and .NET environment
Understand and manage the interaction between Service Bus, messaging queues, and other applications, and their subsequent impact on infrastructure
Work extensively with Azure and AWS ecosystems
Ensure the smooth functioning of applications by understanding the intricacies of infrastructure services
Utilize AWS and Azure expertise in scripting within C# and .NET environment
Handle the interaction of Service Bus or messaging queues with other applications and its impact on infrastructure
Engage in hands-on work to build solutions while understanding the interaction of core infrastructure services with applications

What we offer

Medical, vision, dental, and life and disability insurance
Eligibility to enroll in company 401(k) plan

Fulltime

Middle Python Engineer

Our client is providing cloud-based software solutions for the professional and ...

Location

Poland; Croatia

Salary:

Not provided

ELEKS

Expiration Date

Until further notice

Requirements

3+ years of professional experience in Python backend development
Practical experience with LLMs / AI integrations (OpenAI, Azure OpenAI, LangChain, Hugging Face, or similar)
Hands-on experience with Azure Cloud in preferred
Ability to read and understand .NET (C#) codebase (no coding required)
Upper-Intermediate English level or higher

Job Responsibility

Design, develop, and maintain Python-based components supporting LLM functionalities
Integrate LLMs and AI services into the existing .NET-based product
Work with Azure services to deploy and scale AI-driven solutions
Contribute to CI/CD and DevOps processes (migration from Jenkins to Azure DevOps)
Collaborate with cross-functional teams to ensure smooth integration and delivery
Participate in architecture and design discussions, proposing improvements for performance and scalability
Support and maintain existing chatbot functionality based on Python

What we offer

Close cooperation with a customer
Challenging tasks
Competence development
Team of professionals
Dynamic environment with low level of bureaucracy

Senior .NET MAUI Mobile Developer

We are looking for a Senior .NET MAUI Developer to join a project in the health,...

Location

Ukraine

Salary:

Not provided

Honeycomb Software

Expiration Date

Until further notice

Requirements

5+ years in mobile development, including delivery of production mobile apps from scratch
Strong experience with .NET, C#, and .NET MAUI (or Xamarin + migration experience)
Hands-on experience building hybrid apps with clean architecture patterns (MVVM, DI, clean architecture)
Solid knowledge of automated mobile testing frameworks
Experience publishing apps to both App Store and Google Play
Comfortable working in a cross-functional environment
Understanding of mobile CI/CD tooling and processes
Ability to work with APIs, interpret specs, and propose improvements
English: upper-intermediate or higher

Job Responsibility

Lead the end-to-end development of a new .NET MAUI mobile application for iOS and Android
Migrate functionality from an existing native Swift-based iOS app (4 years old, small codebase, no documentation/tests) into a clean hybrid architecture
Deliver full feature parity with the current version and implement selected improvements
Architect a scalable, maintainable mobile codebase following best practices
Implement data visualization and basic IoT device control features using an existing backend API
Build a comprehensive automated test suite (unit, integration, UI tests)
Prepare high-quality technical documentation
Collaborate closely with UI/UX designers, data engineers, backend developers, and architects
Participate in the creation of a mobile CI/CD pipeline supporting near zero-touch deployments
Recommend and integrate mobile analytics tools if needed

What we offer

Lead the full rebuild of a real, production mobile product
Direct impact on architecture, code quality, and long-term technical direction
Collaboration with a strong, experienced internal team
Clear roadmap with future feature expansion (media capture, enhanced analytics, additional user flows)
Strong focus on engineering culture: maintainability, testing, automation, clean code
A role with high ownership and the space to make meaningful technical decisions

Fulltime

.NET Migration Engineer

Orbis Consultants

Location:
United Kingdom , London

Category:
IT - Software Development

Contract Type:
Not provided

Salary:

Job Description:

Job Responsibility:

Requirements:

Additional Information:

Job Posted:
December 11, 2025

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.NET Migration Engineer

Orbis Consultants

Location:United Kingdom , London

Category:IT - Software Development

Contract Type:Not provided

Salary:

Job Description:

Job Responsibility:

Requirements:

Additional Information:

Job Posted:December 11, 2025

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