For immediate consideration, please connect with me on LinkedIn at https://www.linkedin.com/in/dpotapenko and then email your resume, work authorization status, current location, availability, and compensation expectations directly to denis.potapenko@systemone.com - make sure to include the exact job title and job location in your email message. *** Permanent full time position ( direct hire ) in New York City, NY ( Brooklyn ) *** no H-1B visa sponsorship provided ( looking for US citizens, Green Card holders, or similar profiles that are NOT temporarily work-authorized and/or visa-dependent so this excludes F1/OPT-EAD candidates ) Senior Back-End Software Engineer : - Work on design, development, optimization, and maintenance of server-side logic to ensure high performance and responsiveness of corporate software solutions and products. - Collaborate with front-end developers to integrate user-facing functionalities. - At least 5+ years of experience on projects in institutional asset management, institutional investing, and institutional trading desk across all asset classes. Experience in fixed income markets will be a plus. - Experience with Python, C++, C#, Java, and Ruby on Rails. - Experience with GraphQL and RESTful API integrations - Experience with microservice architecture on AWS or similar platforms. For immediate consideration, please connect with me on LinkedIn at https://www.linkedin.com/in/dpotapenko and then email your resume, work authorization status, current location, availability, and compensation expectations directly to denis.potapenko@systemone.com - make sure to include the exact job title and job location in your email message. #M1 . System One, and its subsidiaries including Joulé, ALTA IT Services, CM Access, TPGS, and MOUNTAIN, LTD., are leaders in delivering workforce solutions and integrated services across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible full-time employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law.