Senior .NET/F# Engineer - API & Event-Driven Systems
Apex Systems Inc
Apex Systems is seeking a Senior .NET/F# Developer to join onsite in Chicago, IL (with Denver, CO as an alternative). This contract role lasts up to 18 months, with potential to convert to full-time. You will design, develop, and deliver complex software, focusing on RESTful APIs, Event-based integrations, and architecture patterns while collaborating with cross-functional teams to meet compliance and performance goals. #J-18808-Ljbffr Apex Systems
Vacancy posted 4 days ago
Similar jobs that could be interesting for youBased on the Senior .NET/F# Engineer - API & Event-Driven Systems in Chicago, IL vacancy
- ...The Options Clearing Corporation (OCC) is hiring a Solution Architect to design and lead the next generation of OCC’s clearing system. You will drive digital transformation across capital markets, owning end‑to‑end solution architecture from ideation through implementation...Senior
- Ritchie Bros. is seeking a Senior Staff Software Engineer to lead technical execution within Product Engineering, focusing on API-driven services and event-driven architectures. You will collaborate with Product Management and engineering to deliver customer-centric capabilities...Senior
- # .Net/F# DeveloperApply**Job#: 3044661****Job Description:****Position**: Senior .NET / F# Developer**Location**: Chicago IL or... ...to build bidirectional API and Event/Messaging based systems integrations. **Responsibilities... ...Programming, Domain Driven Design, and Consumer...SuggestedHourly payFull timeContract work
- True North Consultants seeks an experienced Payments Systems Engineer to build and scale a modern enterprise payments platform across... .... You will design robust payment services with C#/.NET, integrate through APIs with processors and banks, and deliver secure, scalable...Senior
$140k - $175k
A leading SaaS company in Chicago is seeking a Senior Product Manager to define and drive the product strategy for core platform capabilities... ...years of product management experience focused on platform and API-facing products, along with strong technical fluency. This role...SeniorWork at officeFlexible hours$120k - $150k
...$150,000.00/yr Job details 100% Remote Senior .NET Engineer up to $150K base This Jobot Job is hosted... ...orchestration for distributed systems to improve delivery speed. Provide mentorship... ...Developer). Tech NET, C#, ASP.NET (MVC, Web API), JavaScript, Angular, SQL, git,...SeniorLocal areaRemote workFlexible hours- Huntington National Bank is seeking a Senior Full Stack Developer to design,... ..., integrate, and support REST API development for Enterprise Content Management systems. The role is onsite at multiple locations... ...API development, proficiency in .NET/JavaScript/React, and experience...SeniorRemote job
$50 - $65 per hour
...Description Job Description Senior .NET / Full Stack Developer... ...· Build and integrate APIs, front-end applications, databases... ..., Management Information Systems, or a related technical discipline... ...of SOLID principles, domain-driven design, dependency injection,...SeniorHourly payPermanent employmentContract workLocal areaAddison Group
Oak Brook, IL12 days ago$130k - $140k
...degree in Computer Science and have at least 7 years of experience in cloud-based applications. The role includes creating RESTful APIs and participating in agile ceremonies, with a competitive salary between $130,000 and $140,000 per year. Comprehensive healthcare coverage...Senior$170k - $182k
...talent solutions, serving the senior-level talent and... ...Role:The Senior Manager, API & Middleware Engineering will lead API and middleware... ...connectivity across core enterprise systems, data platforms, APIs, and... .... · Experience with event-driven architecture, asynchronous...SeniorFull timeFor contractorsWork experience placement$135k - $165k
...world-class product engineering. The future of... ...OverviewWe are seeking a Senior Java Engineer - AI... ...that power AI-driven and agentic solutions... ...applications, distributed systems, and modern cloud-... ...frameworks and APIs.Develop scalable RESTful APIs and event-driven services.Collaborate...SeniorFlexible hours$223.2k - $262.7k
...impact?West Monroe is seeking a Senior Principal to lead our... ...Distributed Energy Resource Management Systems (DERMS) capability within the... ..., and support data-driven recommendations for clients,... ...advanced degree (e.g., MBA, Engineering, MIS) preferred Experience integrating...SeniorLocal areaImmediate startFlexible hours$82k - $123k
Senior Backend/API Security DeveloperLead II - Software EngineeringWho We Are... ...world.UST is a mission-driven group of 29,000+ practical problem... ...and WAF: Protect backend systems from distributed denial-of-service... ....· Collaborate with DevOps engineers in designing and developing...SeniorFull timeTemporary workPart timeWork at officeLocal areaRemote workFlexible hours- ...scalable applications using C#, ASP.NET, .NET Core, and RESTful APIs.Build and support data-driven platforms that enable secure,... ...integrations between internal and external systems.Collaborate with architects, product owners, and engineering teams to translate business...SeniorFull timeLocal area3 days per week
$148.5k - $223.9k
...Salesforce.About the TeamThe Event Technology team builds... ....About the RoleAs a Senior Software Engineer in Event Technology,... ...with strong backend API development skills and... ...resilient distributed systems as crafting intuitive... ...architectures and event-driven systemsExperience with...SeniorFull time$111k - $174k
...into our culture.If you are driven to solve exhilarating... ...YOU'LL DOWe're looking for a Senior Lead Systems Engineer who's passionate about building... ...problems through software, APIs, automation, and AI. You'll... ...APIs, middleware, and event-driven workflows that create...SeniorWork at officeLocal area$70k - $85k
...Seeking a.NET DeveloperThis position is not a remote position. Sponsorship... ..., and maintain web applications and APIs that integrate with business systems and internal platforms. The ideal candidate... ...for your loved ones in the event of the unexpected.401(k) Plan – Save...Permanent employmentFull timeConexus Food Solutions
Chicago, IL4 days ago- ...experience with a strong understanding of how systems support law firm financial processes,... ...Experience with Boomi integrations, APIs, SQL, and stored procedures. ~... ...Chicago office is seeking a Senior Financial Systems Engineer. The Senior Financial Systems Engineer...SeniorWork at officeRemote work
Law Firm
Chicago, IL20 days ago $133.37k - $156.9k
...team. Responsible for growing and mentoring engineers as it relates to technical skills and... ...experience in C# / ASP.NET5 previous years of API experience2+ years of recent financial... ..., and capacity across complex enterprise systems.Modernize application and infrastructure...Full timeFor contractorsLocal area3 days per week- ...location ()About CJ Engineering Are we a good fit... ...through Test Driven Development Ownership... ...to build reliable systems and deliver software... ...from you! As a Senior Software Engineer... ...subnet IP exhaustion, API server latency,... ...sponsored team-building events• An Employee...SeniorTemporary workFreelanceWork at officeFlexible hours3 days per week
- ...maintaining application upgrades and logging incidents. The ideal candidate will have a degree in Engineering or Computer Science and proficiency in ASP.NET, C#, REST API, and SQL, along with excellent problem-solving and communication abilities. Join a dynamic team and...
- ...management put their trust in ECI. At ECI, we believe success is driven by passion and purpose. Our passion for technology is only... ...commitment to empowering our employees around the world. Senior Systems Engineer ECI’s culture is all about connection - connection with our...SeniorWorldwide
ECI Defunct
Chicago, IL2 days ago $124k - $280k
...solutions.Those in software engineering at PwC will focus on... ...tell a holistic story.Apply systems thinking to identify underlying... ...— from cloud-native API ecosystems and event-driven architectures to AI-infused... ...we live for.The Role:As a Senior Manager in our Digital Integration...SeniorFull timeH1bShift work$172k - $250k
...Senior Account Executive - API Platform Our healthcare system remains frustratingly analog. When you live in a world of one... ...feedback loop is short. Product, Engineering, and GTM leadership are... ...identifying, prospecting, and closing net-new customers across the full spectrum...SeniorLive inFlexible hours- ...Intelligence Technologies LLC in the United States seeks a Senior .NET SQL Developer / Support Engineer to maintain, troubleshoot, and enhance enterprise... ...deployment scripting skills, plus experience with REST/Web API, MVC, and Agile/Scrum practices. On-call rotations and...SeniorRemote jobWeekend work
$125k - $145k
...mortgage lender delivering a seamless, tech‑driven experience to help customers reach... ...Description Summary We are looking for a Senior Systems Engineer to own enterprise infrastructure and... .../CD pipelines, automated testing, REST APIs, and MicrosoftGraph. Experience with endpoint...SeniorFull timeFlexible hoursGuaranteed Rate
Chicago, IL2 days ago- ...product manager to bridge humans and an AI learning system. You will own the seam between brokers and the engineered engine, running a parallel build track and... ...own pilot programs from recruitment to feedback-driven iteration. Your work centers on real systems with...SeniorWork at office
- TransUnion is seeking a Senior Manager of Product Management within the Technology... ...role involves coordinating with engineering, analytics, and business teams to define... ...functional programs. The role emphasizes data-driven decision making, API-driven architecture, and strong...Senior
$100k - $130k
Position: Senior Staff Systems Administrator Location: Warrenton, VA Remote... ...1 # of Openings: 2 BCubed Engineering, an Auria company, is looking... ...THE TEAM REQUIRES: Mission-Driven Professional: Collaborative... ...processes toward standardized, API‑driven, automated...SeniorApprenticeshipWork experience placementRemote work- DNV Energy Systems in North America seeks a Senior Solar Energy Analyst to join the Solar Energy Assessments team, turning data into decisions for solar... ..., financing, and operation. You’ll work in a data-driven culture, advance analytical tools, and communicate findings...Senior
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Senior .NET/F# Engineer - API & Event-Driven Systems. Be the first to apply!
Related searches
- sr net developer Chicago, IL
- .net engineer Chicago, IL
- .net developer Chicago, IL
- remote net developer Chicago, IL
- asp net developer Chicago, IL
- c# asp.net mvc developer Chicago, IL
- senior .net developer Chicago, IL
- microsoft .net developer Chicago, IL
- senior net developer remote Chicago, IL
- senior c# .net software developer Chicago, IL