For our client, a fast-growing AI product company, we are looking for a Senior Backend & AI Engineer (Python) to help build and develop core architecture from scratch and contribute to the development of an innovative AI-driven platform.
What You'll Do:
Design and implement scalable, secure, and efficient back-end services primarily in Python.
Architect and develop advanced AI agents and stateful LLM conversational flows, managing short-term session context and long-term memory extraction.
Build logic to evaluate user interactions and implement structured data pipelines to save, transcribe, and serve real-time session histories and system analytics.
Own technical decisions for backend architecture, APIs, and microservices design.
Explore and evaluate new tools, frameworks, and infrastructure to improve the product and infrastructure stack.
Collaborate closely with product managers, designers, and front-end engineers to deliver impactful features.
Proactively identify technical issues, lead research initiatives, and resolve complex architectural bottlenecks.
Help establish engineering best practices, code quality standards, and technical documentation as the company scales.
Qualifications
5+ years of experience in back-end development with Python.
Proven hands-on experience building AI agents, orchestrating complex LLM workflows, and deploying RAG pipelines.
Experience with advanced AI orchestration and memory management frameworks (e.g. LangGraph, LangMem).
Experience with vector search engines (such as Qdrant) for high-performance data retrieval and artefact management.
Experience with latency optimisation for LLM streaming and database queries.
Strong ownership mindset with the ability to independently research, solve problems, and unblock yourself autonomously.
Strong knowledge of PostgreSQL and experience working with ORMs.
Experience in early-stage startups or building systems from scratch in a fast-paced environment.
Proactive and highly autonomous, while maintaining structured workflows and respecting team processes.
Result-oriented, hard-working, and ambitious.
Upper-Intermediate or higher English proficiency.
Requirements
Experience with TypeScript, NestJS, or React, and willingness to contribute across the stack when needed.
Knowledge of CI/CD pipelines and containerization with Docker.
Experience with message brokers (e.g. NATS) for microservices communication.
Experience in performance optimisation and working with high-load or data-intensive systems.
Experience in subscription-based or B2B/B2C SaaS products.
Benefits
Competitive market compensation.
20 paid vacation days per year.
Full-time remote work with flexible working hours.
Fast-paced, product-driven environment with real ownership and autonomy.
Opportunity to shape architecture and technology decisions from an early stage.
Close collaboration with a strong product, design, and growth team.
Transparent culture with minimal bureaucracy and quick decision-making.
Smart and ambitious teammates who value impact over process.