About PortX

PortX is a leading AI-powered data and integration company for modern banking, bringing systems together and data to life through our unified platform for modern integration, governed customer 360 data, and next-generation payments.

We're in strong growth mode, with opportunities for Senior Software Engineers, working in a high-impact environment, with a great culture that's open and rewarding, so it's a great time to join our growing team.

We’re committed to innovation and efficiency, and looking for a Senior AI Engineer with a passion for leveraging AI to transform the way software is built.

In addition to a competitive basic salary, benefits include an attractive equity package, insurance (medical, dental, vision), unlimited PTO, and 401(k).

About the Role

We’re looking for a creative and technically skilled Senior AI Engineer to build intelligent, user-centric AI-powered applications. This role focuses on designing, integrating, and optimizing AI experiences using large language models (LLMs), agents, and third-party APIs. You won’t be training models or tuning hyperparameters— you’ll be shaping how users interact with AI in production.

If you’re passionate about crafting smart assistants, dynamic workflows, and delightful AI features, this is the role for you.

Key Responsibilities

Design and build AI-powered product features using tools like OpenAI, Claude, Vertex AI, and custom APIs.
Prototype intelligent user experiences including chat interfaces, summarization tools, recommendation engines, and workflow automation.
Integrate third-party AI models and services into web and mobile apps, ensuring security, latency, and scalability.
Work closely with product, design, and UX teams to translate AI capabilities into intuitive user experiences.
Fine-tune prompts, orchestration logic, and fallback behaviors to ensure consistent, high-quality output.
Collaborate with data engineers and backend developers to pipe relevant data into AI-driven features.
Monitor, test, and refine the real-world performance of AI-driven experiences using human-in-the-loop and analytics feedback.

Mandatory Qualifications

5+ years experience in software engineering, ideally with backend or full-stack focus.
Strong programming skills in Python, including experience building and maintaining production services.
Proven experience building with AI agents, agent frameworks (e.g., LangChain, Semantic Kernel, or custom agents), and multi-step tool workflows.
Proficiency in building APIs and front-end interfaces using modern frameworks like JavaScript/TypeScript and React.
Familiarity with foundation model APIs (e.g., OpenAI, Anthropic, Cohere, Google).
Experience with prompt engineering, tool orchestration, and LLM-based user interactions.
Understanding of REST APIs, embeddings, vector stores, and evaluation workflows for AI performance.
Excellent communication and collaboration skills across engineering and product teams.
Strong sense of ownership, capable of dealing with ambiguity, and both critical and persistent problem solving capabilities are an absolute must.

Preferred Qualifications

Experience with retrieval-augmented generation (RAG), memory components, model routing, or multi-agent systems.
Familiarity with AI agent monitoring tools such as Humanloop, PromptLayer, or LangSmith.
Experience working with Model Context Protocol (MCP)
Understanding of cloud-based infrastructure (AWS, Azure, or GCP) and scalable app deployment.
Knowledge of ethical AI practices and secure, responsible AI deployment patterns.

Why You’ll Love This Role

You’ll lead the development of next-gen AI experiences—transforming how users and systems interact with intelligent systems.
You’ll join a high-impact, fast-moving team with the autonomy to experiment and innovate.
You’ll help define the best practices in an emerging discipline at the intersection of engineering, design, and intelligence.

Why Join PortX

At PortX, you’ll be joining an amazing team with a great culture, working at the forefront of technological innovation. If you’re excited by the possibilities of AI-driven development, and excited by the opportunity to be part of a fast-growing company that’s revolutionizing data integration technology in the banking sector, we’d love to speak with you.

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