.NET Developer (WCF) - Innovative Software Solutions

Sonsoft Inc.Chicago

On-site Full-time

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Experience Level

Mid to Senior

Qualifications

Proficient in . NET development with a focus on WCF. Strong understanding of software development life cycles and methodologies. Experience with integration and interfacing of systems. Problem-solving skills and a passion for technology. Ability to work collaboratively in a team environment.

About the job

Join our dynamic team at Sonsoft Inc. as a skilled . NET Developer specializing in WCF (Windows Communication Foundation). In this pivotal role, you will design, develop, and maintain robust applications that serve our diverse client base. Your expertise in . NET technologies will be instrumental in driving innovation and enhancing system performance.

About Sonsoft Inc.

At Sonsoft Inc., we are dedicated to providing cutting-edge software solutions that empower businesses. Our innovative approach and commitment to quality set us apart in the industry. Join us to be part of a forward-thinking company that values creativity and collaboration.

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Software Development Manager

Daniels Sharpsmart

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Join our dynamic team at Daniels Sharpsmart as a Software Development Manager, where you will oversee a talented group of five software developers. In this pivotal role, you will be responsible for designing, developing, and maintaining innovative in-house software solutions that enhance our business operations. The ideal candidate will possess exceptional l…

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Back Office Software Developer

DV Trading

Full-time|$140K/yr - $170K/yr|On-site|Chicago; London; New York

About Us: DV Trading is a prominent player in the global financial services landscape, leveraging proprietary capital, innovative trading strategies, and robust risk management methods to enhance liquidity across diverse financial markets and asset classes. Established two decades ago and based in Chicago, DV Trading has expanded to encompass a workforce of around 600 professionals across North America, Europe, the UAE, and Asia. Our affiliates include two broker-dealers, a futures commission merchant, and a registered investment adviser. Position Overview: We seek a skilled Back Office Software Developer to join a dedicated team responsible for the design, development, and ongoing operation of back-office systems that support trading, risk management, and accounting functions. Key Responsibilities: Collaborate with software engineers, risk managers, accountants, and traders to ensure effective real-time and batch data processing. Create daily reports for the firm and traders based on overnight data. Design and implement database schemas to optimize data processing. Monitor daily operations to guarantee timely distribution of critical information. Facilitate the flow of real-time trade data to deliver accurate intraday position and trade data to both risk management and trading teams. Qualifications: A Bachelor’s degree or higher in Computer Science, Engineering, or a related technical field. 3+ years of professional experience in developing data processing software. Proven programming expertise in C++, preferably within a Linux environment. Strong experience with SQL and database schema design. Familiarity with Python on Linux is advantageous. Excellent verbal and written communication skills in English. Familiarity with trading in futures, options, equities, treasuries, and cryptocurrencies is a plus. Benefits: Highly competitive salary and bonus structure Meritocratic environment with significant growth opportunities Comprehensive Blue Cross Blue Shield Medical PPO Health Savings Account, MetLife Dental, and MetLife Vision Coverage Flexible Spending Account Employer-paid life insurance Optional Long-term Disability and AD&D Insurance Pre-tax parking and transit benefits Casual work environment

Mar 12, 2026

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Software Engineer - Core Development

Jump Trading Group

Full-time|$200K/yr - $250K/yr|On-site|Chicago, New York, Austin

Jump Trading Group brings together experts in mathematics, physics, and computer science to push the boundaries of research in finance and technology. The company values collaboration, creativity, and intellectual honesty, encouraging team members to challenge themselves and each other while working toward shared goals. Research at Jump not only drives strong returns but also leads to technologies that support startups and research partnerships across industries. About the Core Development Team The Core Development team designs, builds, and maintains the advanced trading platforms that power Jump’s business. This group spans multiple locations and combines software and hardware engineering, data science, and research. Projects range from improving the core trading engine to developing custom hardware, all with the goal of supporting trading operations and strategic objectives. What You Will Do Design, build, and test systems and tools that keep Jump’s trading business moving forward Work closely with traders, quantitative researchers, and fellow technologists to solve complex technical problems Tackle challenges involving CPU architecture, operating systems, networking, and hardware integration Who We’re Looking For Strong problem solvers with a passion for technology and curiosity about how things work Comfortable working in a high-energy setting and collaborating with a diverse team Interest in both software and hardware engineering Locations Roles are available in Chicago, New York, and Austin.

Apr 17, 2026

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Senior Software Developer I at Lessen | Chicago

Lessen, LLC

Full-time|On-site|Chicago, IL

Lessen is revolutionizing the delivery and management of commercial and residential real estate services through its innovative technology platform. As a tech-enabled, end-to-end property service provider, we empower stakeholders across the real estate ecosystem—including investors, owners, managers, and service providers—by providing data-driven insights that unlock significant growth opportunities. Lessen has a robust network of over 30,000 vetted vendors (Lessen Affiliates) serving clients with more than 1 million properties and executing over 3.5 million work orders annually across a diverse array of services. Our company, Lessen, LLC, is a venture-backed, privately held organization with offices in Scottsdale and Chicago.This position is based in Chicago, with in-office work required on Monday, Tuesday, and Thursday.Job SummaryThe Senior Software Developer plays a critical role in the Product and Technology Department by overseeing the daily operations of the software development team. As a key member of an agile development team, you will contribute to building enterprise-grade software, engaging in all aspects of the development process from design and implementation to testing. In this role, you will also lead a dedicated team of Software Developers, fostering collaboration and innovation.

Jan 29, 2026

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Staff Software Engineer - Android Development

Grindr LLC

Full-time|Hybrid|Chicago

Join our dynamic team in a hybrid capacity at our Chicago office, attending in-person on Tuesdays and Thursdays.Why This Role is Exciting?Become an integral part of the evolution of the Grindr app! As a member of our Android team, you will tackle complex challenges, leverage cutting-edge technologies, collaborate with an exceptional team, and contribute to a unique application that serves the LGBTQ+ community on an unprecedented scale. Grindr is proud to lead the way in innovation within the social media landscape.Role ResponsibilitiesCollaborate effectively with a talented, cross-functional team across various time zones to enhance Grindr's user experience.Navigate multiple work streams and embrace ambiguity as a catalyst for innovative thinking.Drive innovation by utilizing data-driven insights to inform the adoption of new technologies, architectures, and workflows.Enhance your team's technical capabilities; support the adoption of new tools and methodologies.Develop Android applications, demonstrating proficiency in:Kotlin programmingManaging extensive codebases while ensuring clean, well-structured code for ease of understanding, modification, and debuggingOptimizing performance for large, intricate applications to ensure a seamless user experienceDesigning applications with scalability in focusImplement best practices in software engineering collaboration and design patterns, including MVVM, Coordinator, one-way data flow, and modular architecture.What We Value in YouYou take pride in ownership and consider the broader impact of your work within the organization.You possess a minimum of 6 years of experience in developing sophisticated Android applications.Your technical expertise inspires creativity and innovation among your peers.You have experience in product leadership and technical decision-making, able to balance product needs with code quality.You have collaborated closely with various stakeholders to drive project success.

Feb 6, 2026

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Summer 2026 Software Development Internship

Altom Transport

Internship|On-site|Chicago, Illinois, United States

Duration: Summer 2026 (Flexible start and end dates) Hours: 40 hours per week (depending on availability) Paid InternshipAbout Us:At Altom Transport, we pride ourselves on being a leading carrier of petrochemicals and hazardous materials, dedicated to safety, innovation, and excellence in operations. We are currently seeking a Software Development Intern to contribute to our operations, billing, and application development projects. This internship offers a fantastic opportunity for students or recent graduates eager to acquire hands-on experience in software development within the dynamic transportation and logistics sector.This position is based at our Hammond terminal.What You’ll Do: Assist in developing and enhancing internal applications that aid business operations. Collaborate with the billing and operations teams to design tools that improve efficiency. Contribute to the enhancement of mobile and web applications utilized by customers and staff. Work closely with the IT department to troubleshoot, test, and implement new software solutions. Engage in API integrations, database management, and system automation tasks. Participate in meetings with stakeholders to identify and understand business requirements. What We’re Looking For: Current student or recent graduate pursuing a degree in Computer Science, Software Engineering, or a related discipline. Familiarity with JavaScript, Python, or other programming languages. Understanding of database management (SQL, PostgreSQL, or MongoDB). Knowledge of cloud platforms (AWS, Azure, or Google Cloud) is advantageous. Ability to work both independently and collaboratively in a team setting. Strong analytical and problem-solving skills, coupled with a passion for technology. What You’ll Gain: Valuable, hands-on experience in the software development field. Insight into business operations and automation processes. Mentorship from seasoned IT and operations professionals. The opportunity to create applications that significantly influence the company's success. Interested candidates should submit their resume along with a brief cover letter expressing their interest in software development.

Apr 29, 2026

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Identity and Access Management Software Engineer

Full-time|On-site|Chicago, Illinois

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Apr 29, 2026

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.NET Developer (WCF) - Innovative Software Solutions

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Full-time|On-site|Chicago

Join our dynamic team at Sonsoft Inc. as a skilled .NET Developer specializing in WCF (Windows Communication Foundation). In this pivotal role, you will design, develop, and maintain robust applications that serve our diverse client base. Your expertise in .NET technologies will be instrumental in driving innovation and enhancing system performance.

Oct 26, 2016

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Software Engineer – AI-Driven Development

imc

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Mar 17, 2026

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Senior Software Engineering Manager

adoreal

Full-time|Remote|Remote — Chicago, Illinois, United States

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Feb 25, 2026

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Software Development Engineer in Test (SDET)

RAPP

Full-time|$81K/yr - $97.2K/yr|On-site|Chicago - RAPP

Join Our Award-Winning Technology Team at RAPP Chicago! About Us: At RAPP, we are pioneers in precision marketing, driving growth with empathy and insight. Our global presence and innovative approach enable us to harness data, creativity, and technology to tailor marketing solutions that resonate with individuals. We believe in fostering an inclusive environment where every team member is valued and empowered. Our Approach: Our dedicated team of data analysts, strategists, and technologists work collaboratively to create authentic connections between brands and consumers by leveraging connected data, content, and decisioning. As part of Omnicom's Precision Marketing Group, our team of over 2,000 experts spans more than 15 global markets, committed to delivering exceptional results. Your Role: We invite a motivated Software Development Engineer in Test (SDET) with a focus on AI/ML systems to become part of our dynamic team. We value entrepreneurial thinkers who excel in fast-paced, problem-solving environments. Your Responsibilities: Design, develop, and maintain automated test scripts for functional, API, and database testing. Embrace emerging AI-driven testing solutions and modern quality engineering practices. Adhere to automation guidelines and update scripts based on project requirements. Generate and manage test data for clean test environments using CRUD principles. Collaborate with developers and QA peers to review automation scripts and ensure quality standards. Effectively communicate test results to stakeholders. Take ownership of assigned automation tasks and deliver results proactively.

Feb 13, 2026

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Apr 27, 2026

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Feb 18, 2026

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Feb 14, 2026

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Full-time|On-site|Chicago

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Dec 13, 2013

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Full-time|On-site|Chicago, Illinois, United States

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