Senior Software Engineer (SMTS) - Ultra Messaging

To get the best candidate experience, please consider applying for a maximum of 3 roles within 12 months to ensure you are not duplicating efforts. Job Category: Software Engineering Job Details About Salesforce Salesforce is the #1 AI CRM, where humans with agents drive customer success together. Here, ambition meets action. Tech meets trust. And innovation isn't a buzzword – it's a way of life. The world of work as we know it is changing and we're looking for Trailblazers who are passionate about bettering business and the world through AI, driving innovation, and keeping Salesforce's core values at the heart of it all. Ready to level-up your career at the company leading workforce transformation in the agentic era? You're in the right place! Agentforce is the future of AI, and you are the future of Salesforce. Role Overview The Senior Software Engineer SMTS role is part of the Ultra Messaging (UM) team, a small, specialized group of engineers building and maintaining one of the industry's most demanding real-time messaging middleware platforms. Ultra Messaging is mission-critical infrastructure for some of the world’s largest financial institutions – including major global banks, trading firms, market makers, and exchanges – where microseconds matter and reliability is non-negotiable. The team works remotely with a preference for candidates in the Chicago area, where several team members are based. You'll be working on a mature, production-grade, system-level C codebase that has been powering real-time financial data flows since 2004. If you’re a low-level systems programmer who loves performance, concurrency, and working on software that has to work right, every time – this is your role. Responsibilities Analyze requirements for new features, enhancements, and bug fixes; produce clear requirements documents. Evaluate the existing codebase to determine optimal design approaches; produce design documents. Implement changes primarily in the core C layer, with occasional work in Java (via JNI) and .NET (C#) API wrappers for cross-platform support. Write and execute development-level tests to validate correctness and performance. Collaborate with and support QA and customer support engineers throughout the development lifecycle. Occasionally engage directly with customers on technically complex issues when escalation is warranted. Required Skills 5+ years of experience writing production-quality C or C++ code. Hands‑on experience with multi-threaded programming, including concurrency patterns and thread synchronization primitives. Understanding of performance optimization at the system level – you know how to find bottlenecks and eliminate them. Strong debugging skills and comfort diving deep into complex, unfamiliar codebases. Strong written communication skills – you'll be producing requirements and design documents, and occasionally working through complex technical issues directly with customers. Even Better If... Knowledge of Java – and bonus points if you've worked with JNI (Java Native Interface). Experience with networking protocols, including UDP multicast. Experience with socket programming at a low level. Experience with performance profiling tools and a methodology for systematic performance analysis. Experience with messaging middleware – UM, Aeron, TIBCO EMS, Tibco RV, Kafka, or similar. Unleash Your Potential When you join Salesforce, you’ll be limitless in all areas of your life. Our benefits and resources support you to find balance and be your best, and our AI agents accelerate your impact so you can do your best. Together, we’ll bring the power of Agentforce to organizations of all sizes and deliver amazing experiences that customers love. Apply today to not only shape the future – but to redefine what’s possible – for yourself, for AI, and the world. Accommodations If you need a reasonable accommodation during the application or the recruiting process, please submit a request via this Accommodations Request Form. Posting Statement Salesforce is an equal opportunity employer and maintains a policy of non-discrimination with all employees and applicants for employment. What does that mean exactly? It means that at Salesforce, we believe in equality for all. And we believe we can lead the path to equality in part by creating a workplace that's inclusive, and free from discrimination. Any employee or potential employee will be assessed on the basis of merit, competence and qualifications – without regard to race, religion, color, national origin, sex, sexual orientation, gender expression or identity, transgender status, age, disability, veteran or marital status, political viewpoint, or other classifications protected by law. This policy applies to current and prospective employees, no matter where they are in their Salesforce employment journey. It also applies to recruiting, hiring, job assignment, compensation, promotion, benefits, training, assessment of job performance, discipline, termination, and everything in between. Recruiting, hiring, and promotion decisions at Salesforce are fair and based on merit. The same goes for compensation, benefits, promotions, transfers, reduction in workforce, recall, training, and education. In the United States, compensation offered will be determined by factors such as location, job level, job-related knowledge, skills, and experience. Certain roles may be eligible for incentive compensation, equity, and benefits. Salesforce offers a variety of benefits to help you live well including: time off programs, medical, dental, vision, mental health support, paid parental leave, life and disability insurance, 401(k), and an employee stock purchasing program. More details about company benefits can be found at the following link: At Salesforce, we believe in equitable compensation practices that reflect the dynamic nature of labor markets across various regions. The typical base salary range for this position is $148,500 – $223,900 annually. In select cities within the San Francisco and New York City metropolitan area, the base salary range for this role is $178,900 – $246,000 annually. The range represents base salary only, and does not include company bonus, incentive for sales roles, equity or benefits, as applicable. #J-18808-Ljbffr salesforce.com, inc.