Senior Software Developer
Compunnel
We are seeking an experienced Senior Software Developer with strong expertise in Angular (v12+) and a proven background in modernizing and stabilizing legacy applications. This role is responsible for end-to-end delivery—from architecture and development through deployment—while improving system reliability, performance, and security across a mixed technology environment. The ideal candidate excels at balancing legacy system support with incremental modernization using clean architecture and best engineering practices.
Key Responsibilities
- Design, develop, and deliver new features using Angular (v12+) with TypeScript, RxJS, Angular CLI, and Angular Material
- Maintain and enhance legacy applications including ASP.NET Web Forms/MVC, .NET Framework, VB6, classic ASP, and Blazor
- Perform bug fixes, performance tuning, and security hardening on existing systems
- Refactor tightly coupled codebases to reduce technical debt and improve maintainability
- Implement automated testing and support incremental modernization strategies (APIs, modularization, strangler pattern)
- Architect and design scalable solutions using SOLID principles, clean architecture, and domain-driven design (DDD)
- Own the full SDLC including planning, estimation, development, code reviews, testing, and releases
- Implement and maintain CI/CD pipelines, feature flags, and Git-based workflows
- Optimize application performance through profiling, bundle optimization, lazy loading, caching, SQL query tuning, and front-end best practices
- Collaborate with product owners, QA, DevOps, and business stakeholders
- Mentor team members and contribute to development standards and best practices
Required Skills
- Strong experience with Angular (v12+)
- Advanced knowledge of TypeScript, RxJS, and modern front-end development practices
- Proficient in C#, VB.NET, and Visual Studio
- Strong experience with Microsoft Access, SQL Server, and SQL
- Hands-on experience maintaining and modernizing legacy applications (.NET Framework, ASP.NET, classic ASP, VB6)
- Experience using Bitbucket and implementing CI/CD workflows
- Strong understanding of application security, performance optimization, and testing strategies
- Excellent communication, documentation, and stakeholder management skills
Preferred Skills
- Experience with Blazor or other modern .NET UI frameworks
- Prior experience leading modernization initiatives in enterprise environments
Education
Bachelor’s degree in Computer Science, Engineering, or related field (or equivalent experience)
Experience
Senior-level experience in software development with a focus on Angular and legacy system modernization
#J-18808-Ljbffr- ...Senior Embedded Software Engineer (Wireless Systems) We are seeking a Senior Embedded Software Engineer to join a highly advanced engineering team developing software for wireless communication devices. This is not a typical embedded role. The environment is technically...SeniorLocal areaRemote work
- ...applications that align with the company's evolving needs. As the Senior-Lead Frontend Developer, you will play a crucial role in directing the... ...improvements, and championing best practices across the software stack. Requirements We are seeking: a highly motivated...SeniorShift work
- ...Senior Embedded Software Engineer Niles, IL – Hybrid Contract 5 to 10 Years Responsibilities Design, develop and test embedded software and associated components that are part of a software and hardware system for audio products. Development will emphasize...SeniorContract work
- ...Senior Embedded Software Engineer Niles, IL – Hybrid Contract Design, develop and test embedded software and associated components that are part of a software and hardware system for audio products. Development will emphasize Linux platforms and can include leveraging...SeniorContract work
- ...No Chance of C2C / 1099) Qualifications: ~ Bachelor's degree in Computer Science or Related Major ~10 years of professional software engineering experience with substantial front-end delivery ~ Strong, hands-on experience building production SPAs using Angular...SeniorContract work
$80k - $130k
...or an alternative application process. SAP Integration Suite Senior Developer Full Time O'Fallon, IL, US Salary Range: $80,000.00 To $130,0... ...performance issues. Application Development Implement SAP ABAP software applications and interfaces. Develop, test, debug, implement,...SeniorFull timeLocal areaFlexible hours- ...will be part of a development pod, working closely with the Tech/Team Lead and cross-functional teams to design, develop, and maintain high-quality software products. This position must be located in the greater Chicago area as it has a hybrid work schedule. (3) days...SeniorWork at officeRemote workMonday to Friday
- ...you'll make an impactKey Skills:Strong experience designing, developing, and maintaining REST APIs using C#, the .NET Framework, .NET... ...development, custom agents, and workflow automation to accelerate software delivery.Apply strong object-oriented programming principles...SeniorLocal area
- ...Senior Staff Software Engineer Headquarters Rolling Meadows, IL or Remote COMPANY BACKGROUND Epiq Solutions develops cutting-edge software-defined radio (SDR) products and processing solutions to enable spectrum dominance for maritime, land, air, and space domains...SeniorFull timeTemporary workRemote workFlexible hours
- ...Northrop Grumman in Rolling Meadows, IL is seeking a Staff Principal Software Engineer to develop embedded software for defense applications. The ideal candidate has over 12 years of experience, proficiency in C++, and familiarity with Agile methodologies. The position...Senior
- ...That’s what it means to live The Gallagher Way.OverviewThe Senior AI Engineering Developer owns the technical delivery of enterprise AI solutions at... ....About YouRequiredExperience: 7 or more years in software engineering, including experience in building LLM/GenAI systems...SeniorLocal area
$91.2k - $143.22k
...Nutrien (Canada) Holdings ULC is hiring a Senior Application Security Engineer in... ...strengthen application security across the software development lifecycle. In this onsite role... ...iOS and Android Experience developing metrics, dashboards, and risk reporting...SeniorWork at office$91.2k - $143.22k
...Workplace Type: On Site. Experience Level: Mid-Senior Level. Job Type: Full Time. The Role:... ...to help development teams build and run software more securely without slowing them down.... ...across iOS and Android Experience developing metrics, dashboards, and risk reporting...SeniorFull time- Job DescriptionJob Summary:The Senior Software Engineer II will support the development and continued improvement of customer-facing digital... ...-end development using JavaScript and React, along with developing and maintaining enterprise web applications using Adobe Experience...SeniorHourly payTemporary work
- ...ways of working. United by curiosity and a culture of caring, we develop smart solutions that anticipate our customer’s and partner’s... ...configure and troubleshoot server and non-desktop computer hardware, software, systems and other resources in a data center or other...Senior
$110k - $140k
...HP Tuners is currently seeking a full-time Senior Embedded Software Engineer to join our team in Buffalo Grove, IL. At HP Tuners, we develop hardware and software products to suite the aftermarket needs of automotive enthusiasts. As a Senior Embedded Software Engineer...SeniorFull timeWork at officeRelocation package- Job DescriptionJob SummaryThe Senior Software Engineer I, will be responsible for building, automating, and enhancing platform capabilities... ..., and efficient software delivery. This role focuses on developing cloud-native solutions, integrating DevOps automation, and codifying...SeniorHourly pay
$96.8k - $145.2k
...ways of working. United by curiosity and a culture of caring, we develop smart solutions that anticipate our customer’s and partner’s... ...configure and troubleshoot server and non-desktop computer hardware, software, systems and other resources in a data center or other...SeniorFull timeSummer workLocal areaFlexible hours- ...Medline Industries, LP is seeking a Senior AI Engineer who works hands-on across AI, data, analytics and automation to solve real business problems. You will partner with Commercial, Operations, Product, or Corporate teams to translate workflows into AI-enabled solutions...Senior
- ...Medline Industries, LP in Northfield, Illinois, is seeking a Senior AI Engineer who collaborates with business teams to translate workflows into AI-driven solutions, prototypes, and automation that deliver measurable value. This hands-on role requires building proofs...Senior
$100k - $130k
...and certification services, together with software products and advisory offerings, that... ...sick time off (72 hours).#LI-SG2#LI-Hybrid Develop and execute CFD-based fire and explosion... ...external customersWork under guidance of senior fire and explosion engineers while progressively...SeniorFull time- A leading IT services provider is seeking a SAP HANA Technical Consultant for a contract opportunity in Mount Prospect, IL. The ideal candidate will have over 8 years of SAP experience across various functional areas, and 2 years of hands-on HANA graphical modeling experience...SeniorContract workImmediate start
- ...DescriptionJob Summary:This role demonstrates proficiency across software engineering practices with advanced specialization in Power... ...reliability. This position is primarily responsible for designing, developing, and supporting Power Platform solutions - including Power...Senior
- Robot Field Application Engineer - Open to Entry-, Mid-, and Senior-Level Candidates Posted on 06/23/2026 Location Arlington Heights... ...root-cause analysis across mechanical, electrical, and basic software issues ~Deliver customer training on robot teaching,...Senior
- ...Summary: CBTS is seeking a Senior Full Stack Developer to join an Application Development Team delivering strategic technology initiatives. This... ...Requires: ~ Bachelor's degree in Computer Science, Software Engineering, or related field ~8+ years of enterprise software...SeniorFull timeLocal area
- Zebra Technologies Corporation seeks a senior cloud security architect to design and implement secure cloud architectures across public clouds. You will partner with engineering, security operations, and product teams to embed security by design into cloud deployments....Senior
- Responsibilities Develop and implement enterprise solutions with Microsoft Dynamics 365, including enhancements and custom features tailored... ...of proven experience as a Dynamics 365 Developer (or similar software developer role) implementing and customizing Dynamics 365...Senior
- Senior Software EngineerWilmington, DE / Buffalo Grove, IL / Lewisville, TX / Logan, UTMonday to Friday 8 a.m. to 5 p.m.Hybrid/RemoteDo... ...software product. You’ll work on a distributed team of software developers, as well as collaborate with our quality assurance, project...SeniorLocal areaRemote workWorldwide
- UL Solutions in Northbrook, IL, seeks a Senior Technical Training Specialist to support planning, development, and delivery of technical training for UL products, standards, certifications, and emerging technologies for external clients. You will focus on LMS administration...Senior
- CSC in Buffalo Grove, IL seeks a Senior Software Engineer to design and develop cloud-based tax software. You’ll collaborate with distributed teams, contribute to architecture decisions, and deliver high-quality features using React, Next.js, .NET, TypeScript, and Azure...SeniorRemote work
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Senior Software Developer. Be the first to apply!
- senior operations technician Morton Grove, IL
- srs Morton Grove, IL
- senior Morton Grove, IL
- entry level software sales Morton Grove, IL
- healthcare software sales Morton Grove, IL
- software Morton Grove, IL
- id software Morton Grove, IL
- remote software sales Morton Grove, IL
- c software developer
- diagnostic software engineer




