Chief Cryptographer

About the Company: 

They are a privacy-first, end-to-end encrypted communication platform where security is foundational — not a feature. The company is now

building out a dedicated cryptography research arm to shape the long-term architecture and research direction across its encrypted product suite. This is a rare opportunity to lead that effort from the ground up.

The Role

The Chief Cryptographer will operate as a strategic technical leader overseeing both applied research and product-facing cryptographic implementations. You will work directly alongside the founding team, engineering leadership, and research advisors — sitting at the intersection of cryptography research, infrastructure, and product architecture.

You will help define the future direction of the company's encrypted communication platform and broader enterprise offerings. The research philosophy here is grounded in real-world adoption and practical impact, not purely academic publication cycles.

What you'll work on

• Threshold cryptography, identity-based encryption, MLS, MPC, ZK, and adjacent fields
• Translating research into production-ready systems, libraries, and product implementations
• Shaping the long-term cryptography research roadmap alongside the founding team
• Contributing to protocols, RFCs, and open-source cryptographic ecosystems
• Mentoring researchers and influencing architecture decisions across the organization
• Balancing long-term research vision with practical product execution

What we're looking for

• Deep expertise in cryptography — particularly threshold cryptography, identity-based encryption, MLS, MPC, ZK, or adjacent fields
• A strong applied mindset with the ability to map research into real-world products or production libraries
• A track record of meaningful contributions to cryptographic protocols, publications, RFCs, or open-source ecosystems
• Rust expertise strongly preferred
• Experience leading technical direction, mentoring researchers, or influencing architecture decisions
• Strong communication and collaboration skills with engineering and product teams
• The ability to balance long-term research vision with near-term product execution

Benefits

• Medical
• Dental
• Vision insurance

Senior Data Engineer - Media Org (Hybrid NYC or LA)

I’m working on a Senior Data Engineer search with a leading media and digital platform organization that is building out a modern cloud data ecosystem and expanding its AI-driven data capabilities.

This team is focused on building and scaling a next-generation data platform supporting analytics, audience insights, machine learning, and large-scale media datasets across streaming and digital products. The role will involve designing batch and real-time data pipelines, working heavily within a Databricks environment, helping shape modern lakehouse architecture, and partnering closely with analytics, product, and data science teams. The engineering group is very collaborative and looking for someone who enjoys hands-on technical ownership while helping scale a modern data ecosystem.

Key Technical Requirements

• Strong Data Engineering experience building production data pipelines

• Strong PySpark and SQL expertise

• Experience with Databricks or similar Spark-based cloud platforms

• Experience building batch and streaming pipelines

• Experience with orchestration tools such as Airflow or similar

• Familiarity with AWS environments, data lakes, and modern cloud data architecture

• Experience with modern Lakehouse design patterns, including Medallion Architecture (Bronze, Silver / Gold layers) for structuring scalable and modular data pipelines

This is a full-time opportunity and unfortunately sponsorship is not available at this time (US Citizen or Green Card only).

If interested, please apply here!

Title: Senior Software Engineer — Privacy-First Communications Infrastructure

About the company
This company is building a next-generation, privacy-first communication platform designed for high-stakes environments where security isn't optional. Their core product is a messenger application with true end-to-end encryption at the protocol level — not bolted on, but foundational to everything they ship. They operate on a simple principle: everything not end-to-end encrypted or self-hosted ultimately surrenders data to third-party providers. They're not building another messaging tool. They're creating secure infrastructure that institutions can actually rely on — across finance, government, and enterprise use cases where data integrity and privacy are critical.

The role
We're looking for a Senior Software Engineer to join a small, high-calibre team with strong open-source backgrounds and a culture of real technical ownership. The stack is centred around Rust, with PostgreSQL, Redis, and NATS across the data layer. The product sits at the intersection of backend infrastructure and cryptographic systems, meaning the challenges go well beyond standard application development. You'll work on secure data flow, performance at scale, and designing systems that remain reliable under strict privacy constraints.

Requirements

• Demonstrated excellence outside of work
• Open-source contributions, side projects, or other evidence of self-directed engineering ambition
• 3+ years building and operating high-throughput backend systems at scale, with ownership of technical directionHands-on production experience with PostgreSQL, Redis, and NATS — schema design, query tuning, and failure recovery
• Strong systems programming fundamentals: concurrency, memory management, networking, and performance profiling (Rust, Go, C++, or equivalent)
• Experience designing client-facing SDKs or APIs with stable contracts, versioning, and cross-platform consistency

What You’ll Be Doing:

• Partner with Product & Engineering teams to identify and address legal and compliance risks throughout the product development lifecycle
• Conduct privacy impact assessments (PIAs/DPIAs) for new products, features, and data processing activities
• Provide guidance and support to the Commercial Legal Team regarding privacy & data protection issues in customer and supplier contracts
• Monitor global privacy & data protection laws and regulatory trends, developments, and industry best practices
• Maintain and update internal and external privacy and data protection policies, procedures, guidance, and other documentation
• Support privacy audits and assessments, and respond to privacy-related inquiries from customers, regulators, and other stakeholders
• Provide overall support for the ongoing management and operation of the company's Global Privacy Program

What You’ll Bring:

• J.D. (or equivalent)
• 3-6 years of relevant experience at a leading private practice law firm and/or in-house at a technology company
• Strong working knowledge of global privacy frameworks (GDPR, CCPA, PIPEDA, etc.)
• Demonstrated commercial technology contract drafting and negotiation experience with a focus on privacy and data protection
• Experience with business practices and product counseling in the technology industry
• IAPP certification (CIPP/E/US/C) is considered an asset

Transformation Programme Manager

A household name in the Professional Services sector are expanding their Global Delivery Service team, with a Transformation Programme Manager. As a Transformation Programme Manager, you will be responsible for delivering a number of back-office transformation programmes to 400,000+ users, across multiple business units and countries. 

Having extensive experience of delivering complex, global programmes is essential. You'll need to sell concepts and influence stakeholders from differing cultural backgrounds, whilst navigating an organisation that lacks governance. If you're a Programme Manager, who loves grabbing large programmes and delivering them successfully, despite the challenges, then this is for you! 

This is a permanent role, which is majoratively remote, with occasional travel (UK and internationally). 

You'll be expected to have:

• A strong background in Project and Programme Management.
• Delivered multiple, complex, global programmes, end-to-end.
• Excellent stakeholder management skills - able to communicate effectively with stakeholders across varying geographies (UK, Europe, US, Canada etc).
• Experience delivering back-office transformation projects (ERP, infrastructure etc).
• Managed nearshore, offshore and 3rd party resources to effectively deliver programmes.
• An expert knowledge of IT governance.
• Excellent communication skills.

Role: Transformation Programme Manager

Salary: Up to £115k

Location: Mostly remote, with occasional travel

For immediate consideration, please click apply and Zak Harvey will be in touch shortly.

Lawrence Harvey are one of the leading technology recruitment specialists in the UK. As highly competent consultants, we are consistently building on the excellent reputation that we have already established in technology recruitment. We work in partnership with our clients and candidates building a relationship through understanding so that we can ensure that we are always delivering to their needs.