AI Data and Solution Architect

Vamstar
Vamstar

Software Engineering, IT, Data Science

United Kingdom

Posted on Jun 17, 2026

Location: UK only | Remote / Client site hybrid

Reports to: Engagement Director

Client: Tier 1 Financial Institution

Core responsibilities & objectives

  • Provide strategic leadership and hands-on oversight for a large-scale data-to-AI transformation programme, ensuring architecture decisions align with AWS best practices and fintech regulatory requirements.
  • Design, review, and govern agentic AI systems and LLM-powered workflows (Claude, GPT, or similar) end-to-end: prompt engineering, tool calling, multi-step reasoning, retries, fallbacks, and state management.
  • Architect and steer the build of scalable data pipelines and AI/ML platforms on AWS (Glue, Lambda, SageMaker, Bedrock), with deep involvement in distributed computing, performance, and cost optimisation.
  • Own the technical roadmap and mentor delivery teams; if the AI platform is misaligned, unscalable, or non-compliant, it is on you.
  • Influence C-level stakeholders and engineering teams directly, translating complex AI architecture into clear business outcomes and risk-mitigated execution plans.
  • Work autonomously to programme deadlines with minimal hand-holding; this is a strategic leadership role, not a task-execution role.

Key qualifications & skills (non-negotiable)

  • 12+ years in data engineering, AI/ML, or cloud architecture.
  • 8+ years leading large-scale data transformation initiatives (minimum 3 engagements delivered).
  • 5+ years hands-on with generative AI, LLMs, or agentic AI systems in production.
  • 3+ years deep AWS experience (Glue, Lambda, SageMaker, Bedrock) with proven AI/ML platform implementations.
  • Expert-level knowledge of agentic AI architecture and design patterns; hands-on experience with Claude API or similar LLM APIs.
  • Highly proficient in Python and PySpark; strong understanding of distributed computing and scalability patterns.
  • Solid experience with data pipeline orchestration (Airflow, Step Functions, or equivalent) and ETL/ELT patterns at scale.
  • Executive presence and demonstrated ability to influence C-level stakeholders and make decisions under uncertainty.
  • Proven mentoring and knowledge transfer experience; you must uplift the team, not just direct it.

Preferred background (strong signals)

  • Financial services background and experience with regulated industries (banking, insurance, or fintech).
  • Direct knowledge of PCI-DSS, FCA, SOX, and/or GDPR compliance requirements in AI/data contexts.
  • Experience with Ab Initio or similar legacy ETL platforms; familiarity with large-scale migration scenarios (5,000+ jobs).
  • Previous engagements with Capital One or similar Tier 1 financial institutions.
  • AWS Certified Solutions Architect – Professional and/or AWS Certified Data Analytics – Specialty.
  • Experience with AWS Incident Detection & Response (IDR), data governance, metadata management, and cost optimisation.
  • Track record of delivering complex programmes on-time and within budget.

What will get you rejected

  • Less than 5 years of production generative AI/LLM experience; tutorials and side projects are not enough.
  • No proven track record of successful AI/ML platform implementations at enterprise scale.
  • Unable to commit 50% allocation for the full 18-week duration.
  • "I designed it, someone else delivers it" mindset; this role requires both strategic oversight and deep technical credibility.
  • Poor references or a history of missed commitments.
  • Lack of executive presence or inability to communicate trade-offs clearly to technical and non-technical audiences.
  • Needs detailed specs before forming an opinion; this role demands decision-making under uncertainty.

Interested? We are partnering with AWS to deliver a high-stakes AI transformation for a leading fintech. If you want to shape the architecture, not just follow it, we want to hear from you