Solution Architect

Oscar Technology; City Of London; On-site; GBP 110,000 - 150,000; Full time

Benefits offered by this job

Executive collaboration

Competitive pay

Impactful building

London office

Job summary

Oscar Technology is seeking a Solution Architect to bridge client needs with the platform, designing integration architectures across Java/Spring core and Python services. This engineering-facing role spends about half its time with clients, reading code, and guiding enterprise deployments.

You will produce architecture diagrams, governance frameworks and roadmaps, ensuring multi-tenant isolation, security and observability in line with AWS and CI/CD patterns, while turning pilots into

Qualifications

• 5+ years in software or infrastructure roles, including 3+ years in client-facing solution, enterprise or technical architecture
• Strong grasp of REST, AWS, SaaS multi-tenancy and security fundamentals
• Hands-on familiarity with Python and/or Java, able to read APIs and debug integration issues with engineers
• Experience scoping or deploying LLM-based capability with enterprise clients, including how success was measured
• Excellent client-facing communication and stakeholder management

Responsibilities

• Bridge customer needs and platform capability, designing integration architectures
• Lead discovery workshops and design end-to-end solutions
• Produce architecture diagrams, NFR matrices and implementation roadmaps that engineering signs up to
• Define governance, acceptance criteria and data handling per client requirements
• Ensure multi-tenant isolation, auditability and observability aligned with AWS and CI/CD patterns
• Support pilots and production cutovers, identifying data residency and latency risks

Skills

Enterprise architecture

Client-facing

REST

AWS

Python

Java

Education

Bachelor’s or Master’s degree in engineering or computer science

Tools

Python

Java

REST APIs

AWS

Job description

About my client

My client is building an AI work-execution platform for alternative investment firms and their portfolio companies, securely bringing together proprietary data, external sources and workflows. Backed by a global group of 1,800+ professionals with deep domain expertise, the team is small, senior and high-ownership, with direct access to the Executive Committee.

The role

As Solution Architect, you will bridge customer needs and platform capability, designing how the platform lands inside sophisticated investment firms. You will lead technical discovery with clients, design integration architectures across a Java/Spring core and Python services, and own the trade‑offs that make enterprise deployments repeatable rather than bespoke.

This is an engineering-side role that spends roughly half its time with clients. You will not write production features, but you will read code, debug integrations with engineers, and be the person a client CTO trusts in the room.

Key responsibilities

Solution and integration design

• Lead discovery workshops with enterprise clients and translate requirements into integration architectures covering APIs, auth, data flows and tenancy
• Design end-to-end solutions that combine core workflow services with the platform's AI capability
• Produce architecture diagrams, NFR matrices (security, performance, compliance) and implementation roadmaps that engineering signs up to

Evaluation and governance

• Define how each client will know the system is working on their data, including acceptance criteria and an accuracy bar agreed before go‑live
• Set governance with clients, covering autonomy levels, approval workflows, audit trails and accountability
• Advise clients and internal teams on appropriate AI use and set honest expectations on limitations

Delivery and advisory

• Ensure designs respect multi‑tenant isolation, auditability and observability standards, aligned with AWS and CI/CD patterns
• Support pilots and production cutovers, identifying risks such as data residency, latency and model behaviour, with mitigations that hold
• Contribute to technical pre‑sales and PoC scoping
• Turn one‑off solutions into repeatable patterns the next deployment can reuse

Essential requirements

• 5+ years in software or infrastructure roles, including 3+ years in client‑facing solution, enterprise or technical architecture
• Strong grasp of REST, AWS, SaaS multi‑tenancy and security fundamentals
• Hands‑on familiarity with Python and/or Java, able to read APIs and debug integration issues with engineers
• Experience scoping or deploying LLM‑based capability with enterprise clients, including how success was measured
• Excellent client‑facing communication and stakeholder management

Nice to have: private equity, investment or financial‑services workflow experience; enterprise data‑governance experience, including AI governance conversations with regulated buyers; AWS Solutions Architect (or comparable) certification; daily use of AI coding tools (Cursor, Claude Code or similar).

Education: Bachelor's or master's degree in engineering, computer science or a related field, or equivalent experience.

What's on offer

• Close collaboration with an Executive Committee with 20+ years' experience serving 400+ leading alternative investment clients
• Competitive compensation
• The chance to build something impactful for leading financial services firms
• A supportive, collaborative environment in a central London office