Sezzle is seeking a talented and motivated AI Engineer II to lead the design, development, and ownership of AI-powered internal platforms and systems, with a focus on Marketing. The role involves leading end-to-end delivery of complex projects, designing and implementing AI-driven features, and collaborating closely with engineers and stakeholders to identify high-impact opportunities and drive adoption.
Requirements
- 3–5 years of professional experience in software engineering, AI engineering, platform engineering, or related roles.
- Hands-on experience designing, building, and shipping AI-powered systems into production environments.
- Strong proficiency in Python, SQL, and frontend frameworks such as React.
- Proven experience designing and owning production-grade full-stack systems.
- Experience working with distributed systems, internal platforms, or complex data workflows.
- Ability to operate effectively in ambiguous problem spaces and drive solutions with minimal direction.
- Preferred Qualifications: Experience building AI-first platforms or internal products from scratch, including early architectural decisions.
- Strong foundation in core machine learning and data science principles, including supervised/unsupervised learning, feature engineering, model evaluation, and statistical inference.
- Experience with transformer architectures (BERT, GPT, etc.) and understanding of attention mechanisms, tokenization, and fine-tuning strategies for domain-specific applications.
- Experience developing AI-assisted or agentic systems that interact with tools, data, or workflows.
- Familiarity with embeddings and vector representations, including text embeddings, similarity search, and integration with vector databases (Pinecone, Weaviate, pgvector, or similar).
- Experience with NLP techniques including text classification, named entity recognition, semantic search, and information extraction.
- Familiarity with cloud-native development using AWS.
- Understanding of prompt engineering, retrieval-augmented generation (RAG), and LLM application patterns.
- Experience with containerized systems and orchestration tools such as Docker and Kubernetes.
- Exposure to CI/CD pipelines and modern development workflows (e.g., GitLab).
- Experience with Golang is a plus (or willingness to learn).
- Experience with Braze or similar consumer facing CRM platforms and/or various B2C digital marketing channels like affiliate, CTV, paid social, paid search, GEO/SEO, DSP.
Benefits
- Generous Paid Time Off
- 401k Matching
- Retirement Plan
- Four Day Work Week
- Generous Parental Leave
- Tuition Reimbursement
- Relocation Assistance
