Senior Software Engineer

Job Summary:

We are seeking an experienced and entrepreneurial Senior / Staff Product Engineer with a strong background in web, backend, and AI development. The ideal candidate is highly product-minded and capable of making strategic decisions that drive product excellence. You will play a pivotal role in building robust software solutions while setting high engineering standards for the team.

Key Responsibilities:

• Product Development: Design, develop, and maintain high-quality web and backend systems that meet product requirements.
• Strategic Decision-Making: Collaborate with cross-functional teams to make informed product decisions that enhance user experience and business value.
• Technical Leadership: Set engineering best practices and standards; lead by example to foster a culture of excellence.
• Mentorship: Guide and mentor junior engineers to develop their technical and professional skills.
• Collaboration: Work closely with product managers, designers, and other stakeholders to align technical solutions with business goals.
• Performance Optimization: Ensure the scalability, security, and performance of applications.
• Innovation: Stay updated with emerging AI technologies and industry trends to drive continuous improvement.

Qualifications:

• Education: Bachelor's or Master's degree in Computer Science, Engineering, or a related field.
• Experience: 7+ years of professional software development experience.
• Technical Expertise:
• Experience with LangGraph, LangChain, MCP, LLMs (RAG, fine-tuning, scaled deployments).
• Proficiency in Typescript, React / NextJs, Python, Java.
• Expertise in web technologies - experience developing full-stack solutions leveraging websockets, SSE, REST APIs, service workers, and more.
• Strong backend development skills with experience in Java + Spring, Python.
• Experience with databases and understanding of data modeling. Experience with Redis, and Postgres are a plus.
• Deep familiarity with AWS EKS and deploying in Kubernetes.

Soft Skills:

• Product Mindset: Proven ability to make strategic product decisions with a focus on user needs and business impact.
• Entrepreneurial: Experience taking ideas all the way from ideation to execution. Instead of waiting for tasks, you’re proactively identifying areas of opportunity and building them out.
• Leadership Skills: Demonstrated experience in leading technical teams and mentoring engineers.
• Problem-Solving: Excellent analytical and problem-solving abilities.
• Communication: Strong verbal and written communication skills; ability to articulate complex technical concepts to non-technical stakeholders.

How we work:

• Small, cross‑functional pods with a tech lead (engineering owns sprint tickets; product owns the what/why and outcomes).
• Bias to prototype → validate → build; instrument everything; learn fast.
• High autonomy, high bar, candid feedback, low politics.
• Hybrid: 3 days/week in our West Loop office; occasional travel for customer meetings and team onsites.

Compensation & benefits:

Competitive base + equity; comprehensive health benefits; flexible PTO.

XSELL is committed to a culture of teamwork; where everyone works together to plan, do, learn, and continuously improve. We accomplish that by staying true to our core values.

• Best Chapter: Every XSELLer is plugged in and focused on writing their “best chapter yet”, both personally and professionally. We believe in working hard to achieve success, but that success only comes if we are doing it together. We do this with a high level of humility, integrity, and compassion towards our coworkers. We celebrate and recognize each other and have a lot of fun along the way.
• Know Us By Our Results: We do what we say and say what we do. Our coworkers and clients will “know us by our results” – we welcome that and embrace transparency and measurement.
• Do It The XSELL Way: Together we are building an inclusive culture full of top-performing, talented people that are striving towards common goals with resilience. People will admire not only the work we do but also that we “do it the XSELL way” – as one team. We do this through strong communication, collaboration, and accountability to each other.
• Open for Business: We are always “open for business” – fiercely committed to improving ourselves, our team, and our company. We stay curious and approach every situation as an opportunity to learn and grow.
• Conversations Happen In the Room: Feedback is imperative to our collective success. We approach the “conversation in the room” with respect, empathy, and candor. Our dialogue with each other is always open and honest.

XSELL Technologies is an Equal Employment Opportunity Employer and all employment decisions shall be made without regard to age, race, creed, color, religion, sex, national origin, ancestry, disability status, veteran status, sexual orientation, gender identity or expression, genetic information, marital status, citizenship status or any other basis as protected by federal, state, or local law.

We are committed to the full inclusion of all qualified individuals. As part of this commitment, we will ensure that persons with disabilities are provided reasonable accommodations. If reasonable accommodation is needed to participate in the job application or interview process, perform essential job functions, and/or receive other benefits and privileges of employment, please contact us.

• Seniority Level

  Mid-Senior level

• Industry

  • Software Development

• Employment Type

  Full-time

• Job Functions

  • Engineering
  • Information Technology
  • Product Management

• Skills

• Back-End Web Development
• Java
• Java Software Development
• Spring Framework
• Python (Programming Language)
• TypeScript
• Next.js
• Front-end Coding
• Front-End Development
• Java Application Development
• Kubernetes