Senior Backend Engineer – Typescript (.Nodejs) / AWS

Senior Backend Engineer – Typescript (.Nodejs) / AWS

Varicent is a market leader in Sales Performance Management (SPM), redefining how organizations achieve revenue success with cutting-edge SaaS solutions. We empower revenue leaders globally to design smarter go-to-market strategies, maximize seller performance, and unlock untapped potential. Recognized by industry leaders like Forrester, Gartner, and G2, our solutions are trusted by global companies such as T-Mobile, ServiceNow, and Moody's.

Join us to innovate with purpose, build impactful solutions, and shape the future of revenue optimization in a diverse, collaborative, and supportive environment.

About the Role

As a Senior Backend Engineer specializing in GenAI, you will play a key role in building and scaling production-grade AI systems that directly enhance our customers' experience with our products. You will contribute to the delivery of GenAI-powered features, collaborate closely with technical leads, and ensure the technical quality, reliability, and scalability of a core product area. This role is perfect for a strong individual contributor who thrives on hands-on development, learning new technologies, and transforming innovative ideas into high-quality production systems.

What You’ll Do

• Build and maintain product features and supporting backend components, including services, integrations, and internal workflows.
• Write production-ready code and lightweight prototypes to rapidly validate ideas.
• Create automated tests and proactively resolve issues to ensure release stability, as engineers own quality without a dedicated QA function.
• Support proof-of-concepts and experiments by setting up test cases, reviewing results, and improving areas with quality weaknesses.
• Document systems and workflows to enable others to run, maintain, and extend your work.
• Translate business problems into clear AI tasks and implement end-to-end solutions under the guidance of technical leads.
• Prepare and maintain data and test cases for measuring output quality.
• Apply common AI application patterns such as prompting, using internal knowledge sources, and calling external tools or APIs.
• Measure quality using repeatable evaluation methods, including automated checks and structured human review.
• Contribute to production readiness through versioning, monitoring, basic performance and cost awareness, and usage tracking.
• Adhere to privacy, security, and compliance requirements in collaboration with Legal and Security teams.

What You Bring

• 5+ years of backend or full-stack engineering experience with a strong backend focus.
• 4+ years of experience with Typescript / Node.js / C#.
• Advanced experience with AWS services (EC2, EKS, Lambda, S3, DynamoDB, RDS, Step Functions, etc.).
• Proven experience working with large datasets, distributed computing, and batch or stream processing using technologies like Spark, Dask, EMR, Glue, Kafka, etc.
• Solid understanding of system design, distributed systems, scalability patterns, and cloud architecture.
• Experience working in ambiguous problem spaces.
• Strong interest in learning and applying GenAI technologies in practical, production environments.
• Bachelor’s degree in Computer Science, Engineering, or a related field, or equivalent practical experience.

Nice to Have

• Hands-on experience with GenAI/LLMs, including prompt engineering, retrieval-augmented generation (RAG), embeddings, tool or function calling, fine-tuning, or evaluation pipelines.
• Familiarity with LLMOps practices such as experiment tracking, version control for prompts or models, and cost or latency optimization.
• Experience with tools such as LangChain/LangGraph, OpenAI, Anthropic, Azure OpenAI, and vector databases like Pinecone, FAISS, or Milvus.
• Contributions to open source projects, technical blogs, or conference talks.

Work Model & Location

• Work Model: Fully Remote
• Location: Mexico
• Time Zone Alignment: This role requires employees to work within Eastern Standard Time (EST) business hours. Candidates are expected to adjust their working hours to align with this time zone for seamless collaboration.

What We Offer

• Market-leading compensation package.
• Comprehensive employee insurance coverage: Medical, Dental, Vision, Life Insurance.
• Wellness programs to support health and wellbeing.
• Working with the latest tools and technologies in a fast-paced environment.
• Remote work flexibility, enabling you to build a work-life balance that suits you.
• Annual time off in accordance with applicable legislative requirements.
• A global connected culture with hubs in Romania, UK, US, and Canada.
• A dynamic and innovative multicultural work environment.
• Continuous development opportunities to grow with us.