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Software Engineer – Backend or Full Stack
New York City 4 days p/w on-site
$110,000 – $140,000 + Equity + Benefits
HealthTech / AI / SaaS

A fast-growing Series A healthtech startup is transforming the standard of care across the US healthcare system. Their AI-powered platform enables real-time medical review, helping providers identify and resolve clinical and compliance risks before they impact patients. With over 250,000 providers across all 50 states already using the platform, this company is on a mission to deliver safer, more consistent, and data-driven care at scale.

THE ROLE
As a Software Engineer, you’ll join a collaborative, high-impact team building production-grade AI systems. You’ll work across the backend (and optionally the full stack) to develop scalable systems, integrate modern LLMs, and ship features that directly improve patient care outcomes. This is a unique opportunity to work on meaningful problems in a fast-paced startup environment.

• Develop and maintain scalable backend systems using Python and TypeScript.
• Integrate modern LLMs into real-world healthcare applications.
• Design and build features end-to-end, from data pipelines to UI (if full stack).
• Collaborate closely with product and engineering teams.
• Ship high-quality code that impacts healthcare delivery nationwide.

SKILLS

• Comp Sci degree from a top university
• 1-3 years experience as a software engineer
• Proficiency in Python and TypeScript.
• Strong problem-solving skills and a proactive mindset.
• Experience with SQL and relational databases.
• Excellent communication and teamwork abilities.
• Passion for working in a fast-paced, mission-driven startup.
• Experience working with LLMs.
• Familiarity with AWS infrastructure.
• Front-end experience with React or Next.js.

BENEFITS

• Medical, dental, and vision coverage.
• 11 paid holidays and flexible pto.
• Professional development support.
• Hybrid work schedule.
• Commuter benefits.

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Technical Co-Founder / Founding Engineer
New York City or San Francisco Hybrid
$150,000-$200,000 + Quarterly Bonus + 1-10% Equity
AI / SaaS / Hospitality Tech

A fast-growing AI-native SaaS startup is transforming operations and revenue management for boutique and independent hotels. By replacing legacy systems with intuitive, AI-powered tools, the platform enables hotel teams to focus on guest experience while automating back-office functions. With strong early traction and 12 live customers, the company is now looking to scale its engineering leadership.

THE ROLE

As Technical Co-Founder / Founding Engineer, you’ll lead the engineering function and play a pivotal role in shaping the product and technical direction. You’ll work closely with the CEO and co-founder to translate business needs into scalable, AI-native solutions, while building and managing a high-performing engineering team.

This is a high-ownership, long-term opportunity for someone who wants to be part of a founding team and help raise a seed round in the near future.

• Define and execute the engineering strategy and architecture.
• Lead full-stack development using React, Python, Node.js, and AWS.
• Design and deploy AI-native features (e.g., chatbots, RAG pipelines, agent-based systems).
• Build and manage a high-performing engineering team.
• Collaborate with leadership on product and business strategy.
• Translate business needs into scalable technical solutions.

SKILLS

• Computer Science degree from a top university.
• Senior-level engineering experience, ideally in early-stage startups.
• Strong full-stack skills: Python, Node.js, React, AWS, and SaaS platforms.
• Familiarity with LangChain, RAG, chatbots, and AI/ML toolkits (deep ML expertise not required).
• Excellent communication and business-oriented mindset.
• Experience managing engineers and delivering product milestones.
• Entrepreneurial, collaborative,

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Technical Co-Founder / Founding Engineer
New York City or San Francisco Hybrid
$150,000-$200,000 + Quarterly Bonus + 1-10% Equity
AI / SaaS / Hospitality Tech

A fast-growing AI-native SaaS startup is transforming operations and revenue management for boutique and independent hotels. By replacing legacy systems with intuitive, AI-powered tools, the platform enables hotel teams to focus on guest experience while automating back-office functions. With strong early traction and 12 live customers, the company is now looking to scale its engineering leadership.

THE ROLE

As Technical Co-Founder / Founding Engineer, you’ll lead the engineering function and play a pivotal role in shaping the product and technical direction. You’ll work closely with the CEO and co-founder to translate business needs into scalable, AI-native solutions, while building and managing a high-performing engineering team.

This is a high-ownership, long-term opportunity for someone who wants to be part of a founding team and help raise a seed round in the near future.

• Define and execute the engineering strategy and architecture.
• Lead full-stack development using React, Python, Node.js, and AWS.
• Design and deploy AI-native features (e.g., chatbots, RAG pipelines, agent-based systems).
• Build and manage a high-performing engineering team.
• Collaborate with leadership on product and business strategy.
• Translate business needs into scalable technical solutions.

SKILLS

• Comp Science degree from a top university.
• Senior-level engineering experience, ideally in early-stage startups.
• Strong full-stack skills: Python, Node.js, React, AWS, and SaaS platforms.
• Familiarity with LangChain, RAG, chatbots, and AI/ML toolkits (deep ML expertise not required).
• Excellent communication and business-oriented mindset.
• Experience managing engineers and delivering product milestones.
• Entrepreneurial, collaborative,

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Technical Co-Founder / Founding Engineer
New York City or San Francisco Hybrid
$150,000-$200,000 + Quarterly Bonus + 1-10% Equity
AI / SaaS / Hospitality Tech

A fast-growing AI-native SaaS startup is transforming operations and revenue management for boutique and independent hotels. By replacing legacy systems with intuitive, AI-powered tools, the platform enables hotel teams to focus on guest experience while automating back-office functions. With strong early traction and 12 live customers, the company is now looking to scale its engineering leadership.

THE ROLE

As Technical Co-Founder / Founding Engineer, you’ll lead the engineering function and play a pivotal role in shaping the product and technical direction. You’ll work closely with the CEO and co-founder to translate business needs into scalable, AI-native solutions, while building and managing a high-performing engineering team.

This is a high-ownership, long-term opportunity for someone who wants to be part of a founding team and help raise a seed round in the near future.

• Define and execute the engineering strategy and architecture.
• Lead full-stack development using React, Python, Node.js, and AWS.
• Design and deploy AI-native features (e.g., chatbots, RAG pipelines, agent-based systems).
• Build and manage a high-performing engineering team.
• Collaborate with leadership on product and business strategy.
• Translate business needs into scalable technical solutions.

SKILLS

• Comp Science degree from a top university.
• Senior-level engineering experience, ideally in early-stage startups.
• Strong full-stack skills: Python, Node.js, React, AWS, and SaaS platforms.
• Familiarity with LangChain, RAG, chatbots, and AI/ML toolkits (deep ML expertise not required).
• Excellent communication and business-oriented mindset.
• Experience managing engineers and delivering product milestones.
• Entrepreneurial, collaborative,

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Technical Co-Founder / Founding Engineer
New York City or San Francisco Hybrid
$150,000-$200,000 + Quarterly Bonus + 1-10% Equity
AI / SaaS / Hospitality Tech

A fast-growing AI-native SaaS startup is transforming operations and revenue management for boutique and independent hotels. By replacing legacy systems with intuitive, AI-powered tools, the platform enables hotel teams to focus on guest experience while automating back-office functions. With strong early traction and 12 live customers, the company is now looking to scale its engineering leadership.

THE ROLE

As Technical Co-Founder / Founding Engineer, you’ll lead the engineering function and play a pivotal role in shaping the product and technical direction. You’ll work closely with the CEO and co-founder to translate business needs into scalable, AI-native solutions, while building and managing a high-performing engineering team.

This is a high-ownership, long-term opportunity for someone who wants to be part of a founding team and help raise a seed round in the near future.

• Define and execute the engineering strategy and architecture.
• Lead full-stack development using React, Python, Node.js, and AWS.
• Design and deploy AI-native features (e.g., chatbots, RAG pipelines, agent-based systems).
• Build and manage a high-performing engineering team.
• Collaborate with leadership on product and business strategy.
• Translate business needs into scalable technical solutions.

SKILLS

• Computer Science degree from a top university.
• Senior-level engineering experience, ideally in early-stage startups.
• Strong full-stack skills: Python, Node.js, React, AWS, and SaaS platforms.
• Familiarity with LangChain, RAG, chatbots, and AI/ML toolkits (deep ML expertise not required).
• Excellent communication and business-oriented mindset.
• Experience managing engineers and delivering product milestones.
• Entrepreneurial, collaborative,

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Full Stack Software Developer
Remote (US-based)
$170,000 – $220,000 base + equity
HealthTech / SaaS
A mission-driven healthtech startup is transforming autism care by empowering clinicians to launch and run their own independent practices. With strong backing from top-tier investors and rapid growth across multiple US states, this company is delivering real impact in a high-need sector. With zero customer churn and a 4x revenue increase in just two months, they are scaling fast and looking for top engineering talent to join their journey.

THE ROLE

As a Full Stack Software Developer, you’ll be the second engineering hire and play a pivotal role in building and scaling the company’s core platform. You’ll work across the stack to develop high-quality, scalable web applications that support independent autism care providers. This is a high-impact role with significant autonomy and the opportunity to shape the technical direction of a fast-growing startup.

• Collaborate with leadership to define and execute engineering priorities.
• Build and maintain web applications using React (frontend) and Node.js (backend).
• Design and optimise databases using PostgreSQL and TypeORM.
• Develop responsive UI components with Tailwind CSS.
• Integrate third-party APIs and ensure seamless data exchange.
• Write clean, maintainable code and participate in code reviews.
• Troubleshoot and resolve technical issues across the stack.
• Stay current with industry trends and emerging technologies.

SKILLS

• Comp Sci degree from a top, globally recognized university.
• 5+ years of professional software development experience.
• 3+ years of experience with React.
• 2+ years of experience with Node.js.
• Strong knowledge of JavaScript, TypeScript, and modern web development practices.
• Experience with PostgreSQL, TypeORM, and database design.
• Proficiency in Tailwind CSS.
• Strong problem-solving and communication skills.
• Comfortable working independently in a fast-paced startup environment.
• Experience in healthtech or regulated industries.
• Familiarity with Webflow for marketing/landing pages.
• Exposure to AWS and DevOps practices.
• Experience with testing frameworks and CI/CD pipelines.

BENEFITS

• Fully remote working environment.
• Unlimited PTO and sick leave.
• Medical, dental, and vision insurance.
• Collaborative, mission-driven culture with regular team events

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Founding Member of Technical Staff – Front-End Engineering
New York City (5 days/week in-office)
$200,000 – $300,000 + Equity
AI / Open Source / Developer Tooling

A pioneering open-source startup is building a platform to optimise LLM applications through observability, experimentation, and feedback loops. Backed by top-tier investors and led by a deeply technical founding team, they are creating the infrastructure to make LLMs smarter, faster, and more cost-effective. With a long-term vision and years of runway, they are focused on building a world-class developer experience from the ground up.

THE ROLE

As a Founding Front-End Engineer, you’ll be responsible for designing and building intuitive, high-impact user interfaces-starting with an open-source observability dashboard. You’ll work closely with a small, technical team to shape the product’s direction and user experience, while also having the opportunity to expand your skills across the stack.

This is a rare opportunity to join a company at the earliest stage and help define the future of developer tooling for LLMs.

• Lead the design and development of front-end features, starting with the observability dashboard.
• Build delightful, performant interfaces using tools like React, Remix, and Tailwind.
• Collaborate with a technical team to shape product direction and user experience.
• Contribute to open-source projects and help define engineering best practices.
• Expand your skill set across the stack (e.g., Rust, ML) as the company grows.

SKILLS

• Masters or PhD in Comp Sci from a globally recognized institution
• Strong technical background with experience leading front-end projects from inception to deployment.
• Deep expertise in front-end development, particularly with React and modern frameworks.
• Passion for design and building developer tools that are both functional and delightful.
• Eagerness to learn and grow in a fast-paced, high-ownership environment.
• Preference for in-person collaboration in a high-energy NYC office.

BENEFITS

• Work on open-source software with public impact.
• Collaborate with top-tier engineers and researchers.
• Shape the future of LLM infrastructure and developer tools.
• Backed by leading investors with a long-term mindset.

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Founding Member of Technical Staff – Full-Stack Product Engineering
New York City (5 days/week in-office)
$200,000-$300,000 base + equity

A cutting-edge open-source startup is building a platform to optimise LLM applications through real-time feedback, observability, and experimentation. Backed by top-tier investors and led by a team of experts in ML, Rust, and front-end engineering, this company is redefining how developers build and improve AI systems. With a long-term vision and years of runway, they are focused on building a world-class open-source product from the ground up.

THE ROLE

As a Founding Member of Technical Staff, you’ll be a core contributor to the product engineering team, working across the stack to build high-impact, user-facing features. You’ll collaborate with experts in front-end, back-end, and ML to shape the product and engineering culture from day one.

This is a rare opportunity to work on open-source software at the frontier of LLM infrastructure, with full ownership of key components like the observability dashboard.

• Design and build full-stack features for a high-performance LLM observability and optimisation platform.
• Contribute to open-source projects and shape the technical roadmap.
• Collaborate with a small, highly technical team to deliver production-grade tools.
• Drive projects from concept to deployment with a focus on developer experience and performance.
• Help define engineering best practices and contribute to company culture.

SKILLS

• Masters or PhD in Comp Sci from a globally recognized institution
• Strong technical background with experience leading complex engineering projects.
• Passion for developer tooling, design, and building delightful user experiences.
• Comfortable working across the stack (front-end, back-end, infrastructure).
• Eagerness to learn and grow in a fast-paced, high-ownership environment.
• Preference for in-person collaboration in a high-energy NYC office.

BENEFITS

• Work on open-source software with public impact.
• Collaborate with top-tier engineers and researchers.
• Shape the future of LLM infrastructure and developer tools.
• Backed by leading investors with a long-term mindset.

To Apply for this Job Click Here

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CRM Lead / CRM Manager
Location: Sheffield (Hybrid, 3 days per week onsite)
Salary: Up to £75,000 (DOE)

The Company
An innovative consumer-facing business is seeking a CRM Lead / CRM Manager to join their high-growth team. Backed by a strong digital-first approach and a mission to elevate the customer journey, this role offers the opportunity to own and execute CRM strategy across both B2B and B2C functions.

The Role
As CRM Lead, you will take end-to-end ownership of campaign strategy and execution, using data-led insights to drive engagement, retention, and customer value. Reporting into the Head of Growth, this role blends hands-on CRM execution with strategic development and stakeholder collaboration.

Key Responsibilities

Strategy & Ownership

• Own the end-to-end CRM strategy for B2B and B2C audiences

• Develop lifecycle marketing campaigns to improve engagement and loyalty

• Test new ideas to gamify customer experience and drive retention

Campaign Execution

• Execute automated and campaigns across multiple channels (email, push, in-app)

• Use CRM tools (e.g., Braze preferred, but not essential) to build, launch, and analyse campaigns

• Create and manage customer journeys, trigger flows, and personalisation logic

Analytics & Optimisation

• Monitor and report on CRM performance, campaign impact, and customer segmentation

• Apply A/B testing and continuous improvement to campaign performance

• Use HTML or Java (basic knowledge required) to support technical aspects of builds

Stakeholder Management

• Work cross-functionally with product, marketing, and tech to align CRM with business goals

• Liaise with internal teams to gather insights and inform campaign direction

Team Environment

• Fast-paced and performance-driven, requiring adaptability and entrepreneurial thinking

• Culture of accountability and cross-functional collaboration

Skills & Experience

Essential:

• 3+ years in a CRM or lifecycle marketing role

• Proven track record building and executing CRM campaigns

• Strong data-savvy mindset with performance-oriented thinking

• Exposure to HTML or Java coding for CRM execution

• Experience working across B2B and B2C customer bases

• Comfortable working at pace in a dynamic environment

Desirable:

• Experience using Braze or similar CRM automation tools

• Background in digital consumer products, growth, or SaaS

• Experience mentoring or managing others in a CRM setting

Benefits

• Up to £75,000 salary (flexible depending on experience)

• Hybrid working: 2 days per week onsite in Sheffield

• Ownership of a key marketing function with strategic impact

• Collaborative, high-growth culture

Interview Process

• 3-stage process

• Designed to move quickly for the right person

How to Apply
Interested? Send your CV to Mohammed Buhariwala at Harnham via the Apply link on this page.

Keywords
CRM, Lifecycle Marketing, Customer Engagement, Braze, Email Marketing, Campaigns, Retention, Strategy, Automation, B2B, B2C, HTML, Java, Sheffield, CRM Lead, CRM Manager

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To Apply for this Job Click Here

Member of Technical Staff – Product Engineering
New York City (In-Office, Flatiron)
$150,000 – $200,000 base + Equity
AI / FinTech / SaaS

A high-growth AI startup is transforming the accounting industry by equipping professionals with intelligent agent-based systems. Backed by top-tier investors and experiencing rapid revenue growth, this company is building the future of human-software interaction. With a strong in-person culture and a mission to redefine enterprise workflows, this is a rare opportunity to join a team at the cutting edge of AI and product engineering.

THE ROLE

As a Member of Technical Staff on the Product Engineering team, you’ll take full ownership of a product area-designing, building, and iterating on user experiences that go far beyond traditional software paradigms. This is not just about shipping code; it’s about shaping the future of how humans interact with intelligent systems.

You’ll work closely with cross-functional teams in a fast-paced, high-responsibility environment, contributing to both the technical and cultural foundation of the company.

• Own and drive product development from concept to deployment.
• Design and build full-stack features (front-end or back-end focused).
• Collaborate with engineering, ML, and product teams to define user experiences.
• Apply first-principles thinking to solve complex technical and product challenges.
• Contribute to the company’s technical direction and culture as it scales rapidly.

SKILLS

• Comp Sci Degree from a Top School
• 4+ years of full-stack engineering experience (front-end or back-end leaning).
• Strong product intuition and a desire to own and drive product outcomes.
• Ability to reason from first principles and solve complex problems.
• Experience working in fast-paced, high-growth environments.
• Passion for AI, emerging technologies, and their real-world applications.
• Strong collaboration and mentorship skills.
• Preference for in-person collaboration in a high-energy office environment.

BENEFITS

• Work alongside top talent from engineering, ML, and finance.
• Be part of a mission-driven team building the future of enterprise software.
• Full-time in-office role in NYC’s Flatiron district.
• High-impact, high-responsibility environment with rapid career growth.

To Apply for this Job Click Here

To Apply for this Job Click Here

DevSecOps Engineer – Federal (Active Secret Clearance Required)
Washington, DC (Hybrid with some on-site requirements 1 day p/w)
$170,000 – $220,000 base
AI / Data Analytics / Federal SaaS

A cutting-edge AI and data analytics company is expanding its engineering team to support federal clients. With a focus on secure, scalable, and intelligent platforms, they are delivering next-generation solutions to government agencies. Recognised as one of the best places to work, this is a unique opportunity to join a mission-driven team at the forefront of federal technology innovation.

THE ROLE

As a DevSecOps Engineer, you’ll play a critical role in deploying and maintaining secure, scalable infrastructure for federal clients. You’ll work closely with cross-functional teams and government stakeholders to ensure compliance, security, and performance across cloud-based environments.

This role requires eligibility for US Government Security Clearance and occasional on-site work at federal facilities.

• Collaborate with federal clients and integrators to deploy secure platforms within government networks.
• Build and maintain cloud infrastructure using AWS, Terraform, Kubernetes, and Docker.
• Enhance automation for development, release, and deployment pipelines.
• Ensure compliance with cybersecurity frameworks (CMMC, NIST-800-171, FedRAMP).
• Troubleshoot and resolve deployment and infrastructure issues.
• Work closely with engineering, AI, data science, and QA teams.

SKILLS

• 5+ years of experience in DevSecOps or a similar role.
• Strong expertise in AWS, Terraform, Kubernetes, and Docker.
• Experience deploying SaaS applications in secure, containerised environments (e.g., Platform One, Advana, ODIN).
• Familiarity with federal compliance standards (CMMC, NIST, FedRAMP).
• Bachelor’s degree in Computer Science, Engineering, or related field.
• Must hold for DoD Active Clearance

BENEFITS

• Remote-first work environment with some on-site and travel requirements.
• Fully covered medical, dental, and vision insurance (including dependents).
• Unlimited paid vacation.
• 401(k) plan.
• Recognised by BuiltIn and Inc. as a top workplace.

To Apply for this Job Click Here

To Apply for this Job Click Here

Software Engineer – Cloud & Data Engineering
Location: Hybrid (New York, West Village)
Salary: $140,000 – $170,000 + Benefits
Industry: Cloud Infrastructure / SaaS / FinTech

A rapidly growing cloud infrastructure startup is building the next-generation platform for cloud spend management. Backed by top-tier investors and trusted by global clients, they are redefining how businesses manage and optimise their cloud investments. With a mission to bring clarity, control, and automation to cloud operations, this is a unique opportunity to join a high-impact team at the forefront of cloud innovation.

THE ROLE

As a Software Engineer, you’ll play a key role in designing and developing cloud-native microservices and large-scale data pipelines. You’ll work across AWS and multi-cloud environments, supporting AI-driven financial modelling and real-time data retrieval. This is a hands-on engineering role ideal for someone who thrives in a fast-paced, collaborative environment and is passionate about building scalable, secure systems.

• Develop and maintain cloud-based microservices using AWS and serverless technologies.
• Design and optimise large-scale data pipelines for AI-driven financial modelling.
• Implement infrastructure as code (IaC) using Terraform.
• Build and manage CI/CD pipelines with GitLab Actions.
• Develop secure, scalable API endpoints with OAuth and OpenAPI standards.
• Collaborate with cross-functional teams to improve system performance and scalability.
• Work across multi-cloud environments, including potential GCP integration.

YOUR SKILLS AND EXPERIENCE

• Comp Sci Degree from a top school.
• 5+ years of software engineering experience, with a strong focus on cloud and data engineering.
• Deep expertise in AWS architecture and Terraform.
• Proficient in Python, with experience in data transformation and pipeline development.
• Experience with Docker, Kubernetes, and CI/CD tools (GitLab Actions).
• Strong understanding of API security and real-time data systems.
• Excellent problem-solving and collaboration skills.
• Experience with Machine Learning and model deployment.
• Familiarity with Google Cloud Platform (GCP).
• Previous experience in a fast-paced startup environment.
• AWS Technical Certifications.

BENEFITS

• Unlimited PTO and flexible hybrid working.
• 16-week fully paid parental leave (up to 20 weeks for mothers).
• Company-wide breaks in August and over the winter holidays.
• Comprehensive healthcare (75% employer-covered).
• 30-day sabbatical every 4 years.
• Office access in NYC’s West Village.

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