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PRINCIPAL SOFTWARE ENGINEER – GENAI & PRODUCT ARCHITECT

$280K-$350K BASE + BONUS + EQUITY

HYBRID ROLE – BAY AREA (3 DAYS/WEEK IN OFFICE)

Are you a hands-on builder who loves designing systems end-to-end – from architecture to production – and bringing AI-powered ideas to life? This is a rare opportunity to join a profitable, high-growth healthcare technology company as a founding engineer on a small, senior team working directly with the CTO.

THE COMPANY

This profitable and fast-growing technology company is redefining how professionals in a specialized field learn, collaborate, and access critical information. Backed by strong revenue growth and a proven business model, they’re investing heavily in AI-driven solutions that enhance discovery, personalization, and user engagement.

You’ll join a small, high-performing engineering team that values autonomy, innovation, and craftsmanship – working on products that make a measurable impact in a real-world, mission-driven domain.

THE ROLE

As Principal Software Engineer, you’ll lead the next evolution of the platform’s architecture and AI capabilities. This is both a builder and architect role – ideal for someone who enjoys zooming out to define systems and zooming in to code prototypes and production features.

You will:

• Design and implement scalable backend and frontend systems powering global medical education.
• Build and deploy GenAI and Agentic AI workflows that personalize learning and discovery for doctors.
• Collaborate with data, AI, and product teams to create intelligent features such as search, summarization, and content recommendations.
• Modernize platform architecture (Python/Django, React, AWS).
• Prototype new product ideas, validate them with live customers, and iterate quickly.
• Mentor engineers and help define best practices across teams.

YOUR SKILLS AND EXPERIENCE

• 6+ years of software engineering experience, ideally at Principal, Staff, or Architect level.
• Expertise in Python/Django and strong React/JavaScript (TypeScript) skills.
• Deep understanding of AWS architecture and distributed systems.
• Experience building AI-enabled or data-driven applications (LLMs, agents, personalization).
• A “builder mindset” – hands-on, fast-moving, and comfortable working in ambiguity.
• Bonus: exposure to medical or healthcare data.

THE BENEFITS

• $280k-$350k base + bonus + equity grant
• Hybrid role
• Direct collaboration with the CTO and senior engineering leadership
• Opportunity to shape the future of an AI-driven healthcare platform impacting millions

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Analytics Manager
London (Central) – Hybrid, 1 to 2 days a week in office
£45,000 to £55,000

Are you a data driven specialist ready to take ownership of analytics strategy across a diverse portfolio of digital clients? This is your chance to step into a lead role within a high performing, creative agency team.

Company
A vibrant digital agency partnering with leading brands across hospitality, travel, food and drink, and entertainment. With a collaborative culture grounded in creativity and results, this agency transforms digital touchpoints into measurable impact for its clients. You will be joining an energetic team in Central London, where innovation is encouraged and data is at the centre of decision making.

The Role
As the lead Analytics Manager, you will own and develop the analytics function, acting as the main technical advisor for the business. Working closely with the Director of Performance, you will drive analytics implementation, tracking, reporting and insights across a portfolio of clients. You will also oversee one offshore analytics specialist and play a pivotal role in enabling data informed digital strategies.

Key Responsibilities

• Lead analytics solutions across multiple clients, owning GTM, tagging plans, and tracking

• Build and maintain dashboards and reports in Looker Studio

• Conduct deep dive analysis to guide internal and client side decisions

• Integrate BigQuery and other advanced tools where needed

• Present insights clearly and confidently to clients and internal stakeholders

• Line manage and mentor one offshore team member

Why Apply

• Full ownership of the analytics function

• Hybrid working with a relaxed, collaborative office culture

• Annual wellbeing budget, 25 days holiday and regular social events

• Opportunity to work with leading brands in a high impact role

• A great step up for someone with hands on analytics experience looking to lead

Interview Process

1. Task based first interview

2. Final interview in office (or remote if needed)

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Data Analyst
Up to £45,000
Location: Predominantly Remote (1-2 days per month in Nottingham)

About the Company

An established consumer lending business is entering a transformative period of growth. With significant investment and bold plans to triple loan volumes within the next year, the company is expanding rapidly, developing new credit products, and launching innovative financial solutions.

The Opportunity

We’re looking for a driven, data-focused Insight Analyst to join our Market & Pricing team. This is a high-impact role where you’ll help shape pricing strategy, drive customer acquisition, and optimise performance across broker and lead generation channels. You’ll have real ownership, visibility, and influence in a fast-growing, data-led business.

Key Responsibilities

• Build and manage relationships with third-party brokers and lead generation partners
• Cleanse, manipulate, and analyse large data sets using Python to uncover actionable insights
• Support pricing strategy, evaluating performance against commercial targets
• Deliver insightful reporting and recommendations to drive channel performance and growth
• Lead data-driven projects, including A/B testing, acquisition optimisation, and product development initiatives
• Contribute to the launch of new products, including credit lines and cards

Skills & Experience

• Python skills (data cleansing, transformation, analysis)
• Experience in financial services (lending) is advantageous but not a prerequisite.
• Proven ability to deliver insights and influence senior stakeholders
• Strong analytical and data visualisation skills (Power BI, Tableau, or similar)
• Understanding of growth channels, lead generation, or acquisition strategies is advantageous

If you would like to register your interest in this position, send your CV or apply below.

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Data Analyst

Nottingham (Hybrid – up to 2x Days Per Month in Office)

£40,000 – £45,000

The Company

This fast-growing consumer finance business is on a mission to make short-term lending more transparent, affordable, and accessible. Recently backed by a major international investor, they’re scaling rapidly; tripling loan volumes in the next year and expanding their product range. As part of this growth, they’re looking for a Data Analyst to join their Marketing and Pricing team, helping drive smarter decision-making across lead generation, pricing strategy, and product development

The Role

You’ll work closely with the Marketing and Pricing Analytics Manager to provide analytical insight that shapes customer acquisition, partner performance, and future product expansion. This is a broad and fast-paced role where you’ll have the freedom to shape projects, improve data processes, and grow your technical skill set. Day-to-day, you’ll be:

• Analysing lead generation and third-party broker performance to improve acquisition efficiency
• Building dashboards and automated reports to monitor marketing, sales, and pricing performance
• Supporting A/B testing and experimentation to optimise campaigns and pricing models
• Cleaning, preparing, and analysing large datasets in Python and SQL
• Translating data insights into clear commercial recommendations for non-technical stakeholders
• Contributing to new product development and lending strategy as the business scales

Your Skills & Experience

You’ll thrive here if you’re analytically curious, commercially minded, and eager to grow your technical skills in a high-growth, data-driven environment.

I’m looking for:

• Strong SQL skills for data extraction and manipulation
• Python experience (data wrangling, cleaning, analysis – modelling not required)
• Familiarity with visualisation tools such as Power BI, Tableau, or similar
• Proven ability to interpret and present insights to non-technical stakeholders
• Experience in financial services, lead generation, or a fast-paced commercial setting (preferred)
• A proactive mindset – someone who enjoys improving data processes and making an impact

The Benefits

£40,000 – £45,000

How to Apply

Please register your interest by sending your CV to Adam Osborne at Harnham via the Apply link on this page

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Director of AI

Remote (U.S.) | $220K-$260K base + bonus

A global leader in education technology is seeking a Director of AI to define and execute the company’s Generative AI (GenAI) strategy-shaping how millions of learners engage with personalized, data-driven educational experiences. This is a rare opportunity to lead a high-visibility team building production-grade AI products that directly impact teaching and learning worldwide.

The Opportunity

You’ll lead a team of AI and Data Science professionals developing cutting-edge GenAI applications across a portfolio of digital learning platforms. Reporting to the Chief Data Officer, you’ll combine strategic leadership with technical depth-guiding initiatives from prototype to production while ensuring ethical, scalable, and measurable outcomes.

What You’ll Do

• Lead, mentor, and scale a world-class AI and Data Science team.
• Define the vision and roadmap for Generative AI initiatives across products.
• Partner with Product and Engineering to deliver end-to-end AI solutions.
• Translate complex technical concepts into clear, actionable business insights.
• Champion responsible and secure AI development aligned with educational integrity.

What You Bring

• PhD (or equivalent experience) in AI, Data Science, or a related field.
• 7+ years of experience delivering ML or GenAI systems in production.
• Proven success leading high-performing technical teams.
• Strength in cross-functional collaboration and stakeholder influence.
• Exceptional communication skills-able to balance vision with execution.

Bonus Points

• Experience in education, learning science, or other mission-driven industries.
• Background in LLMOps, agent orchestration, or AI ethics/governance.

Why Join

• Build meaningful AI products that make learning smarter, faster, and more human.
• Work with a world-class data and engineering organization backed by significant investment in GenAI innovation.
• Competitive compensation: up to ~$265K base + bonus + equity.
• 100% remote within the U.S.

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Senior Software Engineer – Lua

Remote (US) | $200,000 – $280,000 base + equity + benefits

A market leader in cloud infrastructure and developer tooling is seeking a Senior Software Engineer to help design, scale, and optimize a next-generation global CDN. This team builds the backbone of high-performance web delivery-handling billions of requests per day and powering some of the fastest, most reliable online experiences in the world.

The Role

As part of the CDN Infrastructure team, you’ll build and enhance distributed systems that make the internet faster and more resilient. You’ll design large-scale systems, write production-grade code, and work closely with product and infrastructure engineers to deliver high-impact improvements in routing, caching, and network performance.

What You’ll Do

• Design, implement, and optimize new CDN features and edge performance improvements
• Diagnose and reduce latency across a global network serving petabytes of data
• Improve reliability and scalability for billions of daily requests
• Build internal tools and workflows for infrastructure developers (primarily in Lua)
• Collaborate across teams to deliver next-generation web infrastructure

What We’re Looking For

• 5+ years of professional experience with Lua
• Deep understanding of HTTP, web servers, and CDN architecture
• Proven experience with distributed systems and large-scale performance optimization
• Strong problem-solving skills and a passion for experimentation
• Bonus: experience with Golang or other backend languages

Why Join

• Work on systems that serve petabytes of data and billions of requests daily
• Competitive compensation including equity and full health coverage
• Flexible, remote-friendly work environment
• Opportunity to shape the next generation of internet-scale infrastructure

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Staff Data Analyst – GTM

Location: Remote
Salary: $200-250k

This fast-growing, Series C cloud platform company is at the forefront of technological innovation, delivering cutting-edge solutions that drive industry transformation. The organization is seeking a highly skilled Staff Data Analyst to lead Go-to-Market (GTM) analytics efforts, enabling strategic growth and turning complex datasets into actionable insights to optimize GTM performance and operational efficiency.

About the Role

This position is central to defining and implementing data strategies that empower GTM teams. By developing metrics, automating reporting, and delivering insightful analyses, the Staff Data Analyst will play a critical role in optimizing growth strategies and ensuring data-driven decision-making.

Key Responsibilities

• Define and implement key GTM metrics to evaluate performance and uncover growth opportunities.
• Conduct in-depth analysis of complex datasets to deliver actionable GTM insights.
• Collaborate with cross-functional teams to identify root causes, refine processes, and inform strategic initiatives.
• Automate reporting workflows and create interactive dashboards to support leadership decision-making.
• Build and enhance datasets for growth optimization and cost reduction initiatives.
• Develop data accessibility solutions, ensuring timely and structured access to insights for all stakeholders.
• Shape the GTM analytics roadmap, aligning data projects with broader organizational goals.

About You

• 6+ years in analytics roles, with expertise in SaaS and product-led growth (PLG) business models.
• Advanced proficiency in SQL and experience with tools such as Looker, Hashboard, or Omni. Familiarity with Python or R and statistical modeling.
• Demonstrated ability to interpret trends, conduct root cause analysis, and deliver data-driven recommendations that influence strategy.
• Strong ability to present complex findings clearly to both technical and non-technical audiences.
• Proven success working in fast-paced, cross-functional environments to drive high-impact outcomes.

This is a unique opportunity to join a dynamic, data-driven organization and make a significant impact on the success of its GTM strategy. If you’re passionate about using data to drive innovation and thrive in a high-growth environment, this role is for you!

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Senior Software Engineer – Go (CDN / Distributed Systems)

Remote – US or Canada

$190-240k base + RSUs

A market leader in cloud infrastructure and developer tooling is seeking a Senior Software Engineer (Go) to help design, scale, and optimize a next-generation global CDN.

This team builds the backbone of high-performance web delivery-handling billions of requests per day and powering some of the fastest, most reliable online experiences in the world.

If you’re passionate about distributed systems, high-performance networking, and building software that powers millions of developers, this is an opportunity to have a direct impact on how the web runs at scale.

The Role

As part of the CDN Infrastructure group, you’ll build and enhance distributed systems that make the internet faster and more resilient. You’ll design large-scale systems, write production-grade code, and collaborate closely with product and infrastructure teams to deliver high-impact improvements in routing, caching, and network performance.

You’ll work across key initiatives that include:

• Evolving an internal CDN framework into a fully production-grade product that customers can use directly.
• Designing systems that enable incremental customer migration onto the platform.
• Scaling redirect handling from thousands to billions of requests per site.
• Adding HTTP/3 support and exploring post-quantum cryptography for next-generation security.
• Driving performance optimization across the edge network and core infrastructure.

This is a role for engineers who love building systems that operate at global scale, thrive on technical depth, and want to shape the future of web infrastructure.

What We’re Looking For

We’re looking for backend engineers with strong distributed systems experience and the ability to design, implement, and scale complex infrastructure.

You’ll bring:

• Proven experience with distributed systems, CDN, caching, or ingress infrastructure.
• Go experience in production (C/C++ backgrounds highly transferable).
• Deep understanding of the HTTP layer and modern cloud networking.
• Experience running systems at scale in a cloud product or infrastructure environment.
• Bonus: experience in Linux kernel tuning, performance optimization, or relevant open-source contributions.

This role is ideal for engineers who are hands-on, performance-oriented, and eager to work on problems of scale.

Why Join

You’ll join a team that values technical excellence, autonomy, and impact-where your work directly shapes how developers build and deploy at the edge.

We operate globally, handle traffic at massive scale, and give engineers the ownership to build systems that redefine what’s possible in web performance and reliability.

We’re a remote-first organization that empowers engineers to make meaningful architectural decisions, ship quickly, and see their impact on real-world products at scale.

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Staff Data Platform Engineer

US Remote

$200-245k base + Equity

We’re working with a rapidly expanding consumer tech startup that recently raised $125M in Series D funding. As they continue to scale, they’re looking to hire a Staff Data Engineer to join their growing data team. If you have a strong foundation in software engineering, a collaborative mindset, and a passion for driving data strategy, this is the opportunity for you!

The Role:
As a Staff Data Engineer, you’ll be a crucial part of the team, ensuring data is accessible, reliable, and actionable across the company. Working alongside engineers, data scientists, and business teams, you’ll help build scalable data platforms that drive key business initiatives and enable data-driven decision-making.

What You’ll Do:

• Collaborate with engineering, data science, and business teams to understand data needs and implement effective solutions aligned with business objectives.
• Design and build scalable data infrastructure and pipelines to handle high volumes of data as the company grows.
• Lead the design and optimization of data architecture, ensuring it’s secure, high-performing, and scalable.
• Improve and streamline data pipelines to provide fast, reliable access to high-quality data.
• Contribute to the design of reporting frameworks and analytics tools that empower teams to make data-driven decisions.
• Work with security teams to ensure data privacy and compliance standards are met.
• Mentor junior engineers, share expertise, and promote best practices across the team.
• Stay updated on new technologies and suggest improvements to enhance processes and tool efficiency.

You’re a Great Fit If:

• You have 7+ years of experience in data engineering.
• You’ve worked at a leading consumer tech company known for engineering excellence.
• You’re an expert in SQL, Python, and data platform development.
• Nice-to-have: Familiarity with AWS, Kubernetes, Redshift, Athena, S3, and Airflow.
• You have hands-on experience with complex data infrastructures and optimizing data pipelines.
• You’ve led large-scale data projects that had a significant impact on your organization.
• You thrive in collaborative environments and have strong communication skills.
• You have an ownership mindset and take responsibility for delivering results.

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Principal Software Engineer – Data Platform

San Francisco, CA (Remote Eligible – US Only)

$230K-$280K base + equity

Are you ready to lead the design and build of a world-class data platform from the ground up?

A high-growth, product-led tech company is looking for a Principal Software Engineer to lead the build-out of a modern, scalable data platform from the ground up. If you’re excited about solving massive data challenges and shaping the infrastructure that supports real-time analytics and AI/ML at scale, this role is for you.

As the most senior technical IC on the Data Platform team, you’ll partner with leadership across Engineering, Product, Security, and Compliance to design a low-latency, cloud-native data architecture using best-in-class tools like Kafka, Iceberg, ClickHouse, Tinybird, and Snowflake.

Why this role?

• Join a growing Data Platform team
• Own the technical vision and architecture end-to-end
• Tackle petabyte-scale data challenges and real-time streaming use cases
• Work with a cutting-edge tech stack (Kafka, Iceberg, ClickHouse, Snowflake, etc.)
• Drive platform evolution to support AI/ML and company-wide analytics

What You’ll Do

• Design and build a next-gen data platform to power product and internal use cases
• Architect for batch + streaming, scalability, fault tolerance, and low latency
• Lead data modeling, warehousing, governance, and ingestion best practices
• Champion engineering excellence and mentor senior engineers
• Align technical decisions with long-term business strategy
• Optimize for performance, cost, and resiliency in a modern cloud environment

What We’re Looking For

• 8+ years of experience in data engineering or platform architecture
• 5+ years at the Principal Engineer level or equivalent
• Deep expertise with Kafka (and its ecosystem), streaming data systems
• Strong experience with ClickHouse, Iceberg, Snowflake, or similar tools
• Cloud-native architecture expertise (AWS, GCP, or Azure)
• Track record of designing data systems for compliance and governance
• Experience scaling systems to support petabyte-level workloads
• Excellent communication, collaboration, and leadership skills
• Bonus: Experience enabling AI/ML platforms or preparing for IPO-scale growth

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AI Software Engineer

Remote (US – ET/CT Time Zone)
$120K-$160K + Benefits

I’m partnering with a global leader in digital learning technology that’s transforming how millions of students and educators experience personalized, AI-powered learning. Following major investment in generative AI, the company is scaling its AI Platform Engineering team to build the next generation of adaptive learning tools.

This is a hands-on engineering role focused on building production-grade generative AI applications that power multiple products across the business.

The Role:

You’ll design and build scalable, full-stack systems that integrate large language models and AI capabilities into digital learning platforms. Working closely with data scientists, product managers, and engineers, you’ll help take GenAI prototypes from experimentation to production-driving forward real-world AI impact.

Key Responsibilities

• Develop and maintain AI-powered applications and platform services that are reliable, scalable, and secure
• Build and optimize LLM-based and RAG-powered solutions using frameworks such as LangChain or LangGraph
• Collaborate with Data Science teams to productionize models and streamline deployment pipelines
• Lead and contribute to technical design, architecture, and CI/CD improvements
• Ensure applications meet accessibility (WCAG 2.2 AA), performance, and security standards
• Stay current on the latest advancements in GenAI and advocate for best practices across the team

About You

• 5+ years of professional software engineering experience
• Strong full-stack skills across:
• Backend: Python, Node.js, or Go
• Frontend: Angular or React
• Databases: MySQL/PostgreSQL + NoSQL (e.g., DynamoDB)
• Cloud/Infra: AWS or Azure, Terraform, CI/CD tools
• Hands-on experience building AI/GenAI-enabled applications (Azure OpenAI, Amazon Bedrock, etc.)
• Practical understanding of RAG techniques, vector databases, and AI orchestration tools
• Strong system design, performance optimization, and collaboration skills
• Passionate about building impactful technology and staying ahead in the AI space

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