Client Platform Security Engineer Jobs

Lithic is the modern card issuing and processing platform empowering ambitious financial companies to build the future of payments. Our infrastructure powers card programs for 100+ innovative clients, from fintechs reimagining credit and digital banking to platforms transforming disbursements and spend management. Companies like Mercury, Flex, and Novo rely on Lithic's developer-friendly APIs, direct network connections, and flawless reconciliation to launch and scale card programs in weeks, not years. We're building a future where access to better financial products materially improves people's lives, free from the constraints of 30-year-old mainframes and legacy processors. We're proud to be backed by world-class investors who share that vision, including Bessemer Venture Partners, Index Ventures, Spark Capital, Stripes, and Mastercard, along with many others. We're a team of 170+ across 26 states and 7 countries, headquartered in New York City. We are hiring for our Treasury team Software Engineers at various levels (II and Senior) who are curious and willing to dive deep and understand our technology and domain in order to solve interesting and hard problems.The Treasury team maintains and builds the backend services that manage the flow of funds between Lithic and third parties. This includes our ledger, ACH and wire infrastructure, and associated reconciliation. The systems we maintain have high standards of reliability and correctness. You will become an expert in the card payments space. The Treasury team primarily uses Python for their tech stack. What You'll Do: Ensure high reliability and correctness for Lithic’s ledger and orchestrated funds flows Develop new features to better serve Lithic customers Ensure that the team is delivering reliable, secure, and scalable code with minimal tech debt Own initiatives from planning to launch, keeping stakeholders informed and aligned along the way Lead efforts to improve systems and processes wit

Lithic is the modern card issuing and processing platform empowering ambitious financial companies to build the future of payments. Our infrastructure powers card programs for 100+ innovative clients, from fintechs reimagining credit and digital banking to platforms transforming disbursements and spend management. Companies like Mercury, Flex, and Novo rely on Lithic's developer-friendly APIs, direct network connections, and flawless reconciliation to launch and scale card programs in weeks, not years. We're building a future where access to better financial products materially improves people's lives, free from the constraints of 30-year-old mainframes and legacy processors. We're proud to be backed by world-class investors who share that vision, including Bessemer Venture Partners, Index Ventures, Spark Capital, Stripes, and Mastercard, along with many others. We're a team of 170+ across 26 states and 7 countries, headquartered in New York City. Lithic's Treasury Operations team owns the movement of money across our card issuing infrastructure — network settlement, sponsor bank transfers, and the reconciliation that keeps it all provable. This is a hands-on, high-ownership role for someone who wants to learn the inner workings of payments and fintech infrastructure, not just observe them from a reporting layer. You'll be running a critical, time-sensitive engine every day — and at the same time, working alongside the Head of Treasury Operations to improve how that engine works as the function scales. You’ll also work cross-functionally across a wide range of teams (Finance, Treasury Engineering, Risk, Analytics, Processing, Customer Success, Bank Operations) — this role sits at the center of a lot of different workflows, not off in a silo. What You'll Do Execution (50%) Own day-to-day execution of network settlement transfers (Mastercard, Visa) and related treasury transfers across sponsor banks Operate in a time-sensitive environment where errors or d

Lithic is the modern card issuing and processing platform empowering ambitious financial companies to build the future of payments. Our infrastructure powers card programs for 100+ innovative clients, from fintechs reimagining credit and digital banking to platforms transforming disbursements and spend management. Companies like Mercury, Flex, and Novo rely on Lithic's developer-friendly APIs, direct network connections, and flawless reconciliation to launch and scale card programs in weeks, not years. We're building a future where access to better financial products materially improves people's lives, free from the constraints of 30-year-old mainframes and legacy processors. We're proud to be backed by world-class investors who share that vision, including Bessemer Venture Partners, Index Ventures, Spark Capital, Stripes, and Mastercard, along with many others. We're a team of 170+ across 26 states and 7 countries, headquartered in New York City. We are seeking a Product Delivery Specialist to join Lithic’s team in our NYC office. In this role, you will lead complex customer implementations, drive operational excellence, and develop scalable processes that enable billions in transactions for the most innovative fintechs and digital banks. This position offers a unique vantage point across our business from product and engineering to compliance and operations allowing you to tackle meaningful challenges while making a tangible impact. In this role, you will coordinate a wide range of activities from implementing customer requirements and configuring the software to conducting technical setup and integration support with the ultimate goal of getting the customer’s solution live as quickly as possible, driving fast Time to Revenue (TTR) and provide great customer experience. You will operate at the intersection of our customers, internal teams, and third-party partners, executing progress across multiple project streams simultaneously. You will launch new

About Taskrabbit: Taskrabbit is a marketplace platform that conveniently connects people with Taskers to handle everyday home to-do’s, such as furniture assembly, handyman work, moving help, and much more. At Taskrabbit, we want to transform lives one task at a time. As a company we celebrate innovation, inclusion and hard work. Our culture is collaborative, pragmatic, and fast-paced. We’re looking for talented, entrepreneurially minded and data-driven people who also have a passion for helping people do what they love. Together with IKEA, we’re creating more opportunities for people to earn a consistent, meaningful income on their own terms by building lasting relationships with clients in communities around the world. Taskrabbit is a hybrid company with employees distributed across the US and EU and a Built In — Best Places to Work (2022, 2023, 2024, 2025) continually ranked across multiple national and regional categories. Join us at Taskrabbit, where your work will be meaningful, your ideas valued, and your potential unleashed! This role operates on a hybrid schedule requiring two days of in-office collaboration per week in our London office (Soho). This is a mat leave coverage contract that we expect to go for 8 to 9 months in duration. About the Role Join our team as a Marketing Lead and play a key role in driving Taskrabbit's growth across the UK market. This role combines ownership of the UK's go to market strategy with hands-on execution - from local activations and metro-level initiatives to partnerships. It's ideal for someone who thrives in fast-paced, cross-functional environments, is equally comfortable with data and with people, and is passionate about growing a two-sided marketplace. This role reports to the UK Senior Country Manager, working closely with central Marketing Channel Leads, Tasker Operations, Product and other global teams. The Marketing Lead executes on the country-level top-of-funnel commercial and marketing strategy

WHO WE ARE: Zinnia is the leading technology platform for accelerating life and annuities growth. With innovative enterprise solutions and data insights, Zinnia simplifies the experience of buying, selling, and administering insurance products. All of which enables more people to protect their financial futures. Our success is driven by a commitment to three core values: be bold, team up, deliver value – and that we do. Zinnia has over $180 billion in assets under administration, serves 100+ carrier clients, 2500 distributors and partners, and over 2 million policyholders. WHO YOU ARE: You are a Techno-functional Product Manager with 5+ years of Product Management experience who thrives at the intersection of technology and business. You will be responsible for driving product initiatives, managing integrations, and collaborating closely with cross-functional teams to deliver scalable and impactful solutions. WHAT YOU’LL DO: Contribute into the execution of all product lifecycle processes for products, including product research, market research, competitive analysis, planning, positioning, roadmap development, requirements development, and product launch Analyse consumer needs, current market trends, and potential partnerships from an ROI and build vs. buy perspective Gain a deep understanding of existing systems, customer experience, identify and fill product gaps and generate new ideas that grow market share, improve customer experience and drive growth Works with a cross-functional team to ensure fulfilment of product requirements, evaluates product performance and transition products from development to commercialization. Assists in determining product delivery and deployment dates for new product releases, feature and maintenance releases and regular corrective service or service pack releases. Assist in Developing and executing proposed business and technical solutions. Work with engineering teams to design and manage API integrations across platforms. Assist

About Taskrabbit: Taskrabbit is a marketplace platform that conveniently connects people with Taskers to handle everyday home to-do’s, such as furniture assembly, handyman work, moving help, and much more. At Taskrabbit, we want to transform lives one task at a time. As a company we celebrate innovation, inclusion and hard work. Our culture is collaborative, pragmatic, and fast-paced. We’re looking for talented, entrepreneurially minded and data-driven people who also have a passion for helping people do what they love. Together with IKEA, we’re creating more opportunities for people to earn a consistent, meaningful income on their own terms by building lasting relationships with clients in communities around the world. Taskrabbit is a hybrid company with employees distributed across the US and EU and a Built In — Best Places to Work (2022, 2023, 2024, 2025) continually ranked across multiple national and regional categories. Join us at Taskrabbit, where your work will be meaningful, your ideas valued, and your potential unleashed! This role is based in London and candidates must have the existing right to work in the UK. Taskrabbit is a hybrid company, with employees working 2 days per week in our dedicated office space in Central London (Soho). About the role: The Globalization team sits within the Product organization and ensures the Taskrabbit experience is fully localized and culturally resonant across all our international markets: Canada, the UK, France, Germany, Spain, Portugal, and Italy. We are growth partners and brand guardians for Marketing, Product, Partnerships, and Tasker Operations, among many other departments, elevating brand recognition and unlocking net revenue everywhere. We are seeking an experienced Senior Localization Specialist to join the team, managing all localization needs with expertise on the Italian locale. In this role, you will balance global localization project management across all markets, including high-touch

About Taskrabbit: Taskrabbit is a marketplace platform that conveniently connects people with Taskers to handle everyday home to-do’s, such as furniture assembly, handyman work, moving help, and much more. At Taskrabbit, we want to transform lives one task at a time. As a company we celebrate innovation, inclusion and hard work. Our culture is collaborative, pragmatic, and fast-paced. We’re looking for talented, entrepreneurially minded and data-driven people who also have a passion for helping people do what they love. Together with IKEA, we’re creating more opportunities for people to earn a consistent, meaningful income on their own terms by building lasting relationships with clients in communities around the world. Taskrabbit is a hybrid company with employees distributed across the US and EU and a Built In — Best Places to Work (2022, 2023, 2024, 2025) continually ranked across multiple national and regional categories. Join us at Taskrabbit, where your work will be meaningful, your ideas valued, and your potential unleashed! Location: London (hybrid working in office 2 days in central London) About the Role: As a General Manager, you will be responsible for leading the UK country team to grow the market, manage the country P&L, and hit targets for net revenue and contribution margin. You will work closely with cross functional teams in setting a market strategy, alongside efficient tactical and operational plans to meet commercial goals, and produce strong propositions for both customers and taskers. What You’ll Work On: P&L responsibility for the UK business Shape the UK strategy to deliver core commercial goals including revenue and contribution margin Accountable for both sides of the marketplace: generating demand as well as ensuring strong supply health and task fulfilment Responsible for value propositions on both sides of the marketplace Directly manage the UK team that covers marketing, partnerships and tasker operations Champion the

WHO WE ARE: Zinnia is the leading technology platform for accelerating life and annuities growth. With innovative enterprise solutions and data insights, Zinnia simplifies the experience of buying, selling, and administering insurance products. All of which enables more people to protect their financial futures. Our success is driven by a commitment to three core values: be bold, team up, deliver value – and that we do. Zinnia has over $180 billion in assets under administration, serves 100+ carrier clients, 2500 distributors and partners, and over 2 million policyholders. WHO YOU ARE: As a Technical Project Manager at Zinnia Digital, you will be responsible for overseeing the successful completion of projects or programs within our technology organization. Partnering with the product team as well as cross-functional software engineering teams to ensure value delivery for stakeholders. Facilitating timeline and dependency management as well as budget understanding. Additionally, facilitating project team success and adherence to best practices. WHAT YOU’LL DO: Day-to-day partnership with product management team. Plan and oversee multiple technology projects, ensuring they are aligned with overall timeline. Support dependency management processes. Exhibit exceptional organizational skills. Facilitate and adhere to PMO governance. Lead and manage projects at an executive level. Develop project plans, including project scope, schedule, budget, and resource allocation. Manage project teams, including cross functional engineers, QA, and other technical staff. Communicate with various stakeholders, including management, project sponsors, and clients, to ensure that project goals, timelines, and dependencies are understood and met. Participate and/or facilitate various ceremonies such as backlog refinement and planning. Leverage Agile experience to increase team throughput, transparency, and collaboration. Identify and manage project risks, including developing contingency

WHO WE ARE: Zinnia is the leading technology platform for accelerating life and annuities growth. With innovative enterprise solutions and data insights, Zinnia simplifies the experience of buying, selling, and administering insurance products. All of which enables more people to protect their financial futures. Our success is driven by a commitment to three core values: be bold, team up, deliver value – and that we do. Zinnia has over $180 billion in assets under administration, serves 100+ carrier clients, 2500 distributors and partners, and over 2 million policyholders. WHO YOU ARE: The Specialist, Business Finops will play a crucial role and will be responsible for providing financial planning, analysis and reporting for Corporate, a business, or a P&L within a business. Interprets simple internal and external business challenges and recommends best practices to improve products, processes or services. Stays informed of industry trends that may influence work. WHAT YOU’LL DO: • Reconciling financial records: Reconcile payments as indicated on remittance documents and reconcile accounts. • Managing Tax reporting process: Manage daily withholding balancing and ensure tax recs are balanced. Tax Reporting & Compliance • Ensure accurate and timely tax reporting for annuity products including policyholder premiums, annuity payouts, interest and investment income, and return of principal. • Oversee preparation and review of tax documents and filings as per IRS and regulatory standards (e.g., 1099-R). Tax Treatment Execution • Execute daily, monthly, and quarterly activities to ensure proper tax treatment of annuity distributions. • Collaborate with actuarial, finance, and legal teams to ensure consistency and accuracy in tax calculations. Death Benefits & Beneficiary Taxation • Address and resolve issues related to the taxability of death benefits. • Ensure proper tax reporting for beneficiaries and align reporting processes with current

WHO WE ARE: Zinnia is the leading technology platform for accelerating life and annuities growth. With innovative enterprise solutions and data insights, Zinnia simplifies the experience of buying, selling, and administering insurance products. All of which enables more people to protect their financial futures. Our success is driven by a commitment to three core values: be bold, team up, deliver value – and that we do. Zinnia has over $180 billion in assets under administration, serves 100+ carrier clients, 2500 distributors and partners, and over 2 million policyholders. WHO YOU ARE: The Executive Assistant is a strong team player with experience supporting C-suite executives in an entrepreneurial or start-up environment. You can multitask, prioritize, demonstrate exceptional organization, and take ownership over your assignments. You thrive in a mission-driven culture, supporting collaboration and thinking outside the box. You can easily adapt to change in a fast-paced environment and demonstrate a practical approach to problem solving. No task is too big or small. WHAT YOU’LL DO: Work closely with the leaders and first assistant to help manage an ever-changing calendar. Arrange detailed domestic and international travel plans. Track expenses and compile expense reports for the leader using Concur. Maintain a highly organized system to help manage important correspondence and sustain an efficient internal workflow. Act as “the glue” between clients, partners, vendors, and internal associates, keeping important initiatives on track and communication streamlined. Conduct appropriate research, prioritization and follow ups on incoming and upcoming tasks, and determine appropriate course of action. Suggest and implement ways to improve processes to help workflow efficiency. Develop plans and help manage events such as team building off-sites, workshops and board meetings. Assist with personal tasks as needed. WHAT YOU’LL NEE

WHO WE ARE: Zinnia is the leading technology platform for accelerating life and annuities growth. With innovative enterprise solutions and data insights, Zinnia simplifies the experience of buying, selling, and administering insurance products. All of which enables more people to protect their financial futures. Our success is driven by a commitment to three core values: be bold, team up, deliver value – and that we do. Zinnia has over $180 billion in assets under administration, serves 100+ carrier clients, 2500 distributors and partners, and over 2 million policyholders. WHO YOU ARE: As an Project Manager at Zinnia Digital, you will be responsible for overseeing the successful completion of projects or programs within our technology organization. Partnering with the product team as well as cross-functional software engineering teams to ensure value delivery for stakeholders. Facilitating timeline and dependency management as well as budget understanding. Additionally, facilitating project team success and adherence to best practices. WHAT YOU’LL DO: Day-to-day partnership with product management team. Plan and oversee multiple technology projects, ensuring they are aligned with overall timeline. Support dependency management processes. Exhibit exceptional organizational skills. Facilitate and adhere to PMO governance. Lead and manage projects at an executive level. Develop project plans, including project scope, schedule, budget, and resource allocation. Manage project teams, including cross functional engineers, QA, and other technical staff. Communicate with various stakeholders, including management, project sponsors, and clients, to ensure that project goals, timelines, and dependencies are understood and met. Participate and/or facilitate various ceremonies such as backlog refinement and planning. Leverage Agile experience to increase team throughput, transparency, and collaboration. Identify and manage project risks, including developing

WHO WE ARE: Zinnia is the leading technology platform for accelerating life and annuities growth. With innovative enterprise solutions and data insights, Zinnia simplifies the experience of buying, selling, and administering insurance products. All of which enables more people to protect their financial futures. Our success is driven by a commitment to three core values: be bold, team up, deliver value – and that we do. Zinnia has over $180 billion in assets under administration, serves 100+ carrier clients, 2500 distributors and partners, and over 2 million policyholders. WHO YOU ARE: As Senior Product Manager for Case Management, you will own the product area that moves insurance cases through their lifecycle — from new-business intake and requirements orchestration through underwriting, issuance, and placement. You will lead the product life cycle for this domain, partner closely with Engineering, and work across Zinnia’s Product Organization to keep the case-management experience aligned with company strategy while delivering measurable value to carriers, distributors, and policyholders. WHAT YOU’LL DO: Own the product roadmap and lifecycle for Zinnia’s case-management capabilities across the new-business and underwriting workflow - intake, requirements gathering, status tracking, and case placement - spanning distributor and carrier touchpoints on our platforms. Lead technical discussions with Engineering teams and manage technical and business requirements end to end. Partner with cross-functional teams to ensure product requirements are met, evaluate product performance, and transition features from development to commercialization. Define delivery and deployment timelines for new product, feature, maintenance, and corrective/service-pack releases. Ensure the technology and architectural roadmap aligns with and supports the product and business roadmap. Act as a customer liaison on technical matters related to product integration, custom development, and requ

WHO WE ARE: Zinnia is the leading technology platform for accelerating life and annuities growth. With innovative enterprise solutions and data insights, Zinnia simplifies the experience of buying, selling, and administering insurance products. All of which enables more people to protect their financial futures. Our success is driven by a commitment to three core values: be bold, team up, deliver value – and that we do. Zinnia has over $180 billion in assets under administration, serves 100+ carrier clients, 2500 distributors and partners, and over 2 million policyholders. WHAT YOU’LL DO: Prepare month/quarter/year-end financial statements, including cash flows for leadership reviews. Timely address comments received. Partner with FP&A in preparing and reviewing period end investor/leadership reporting. Perform financial data reconciliations in various systems internally utilizing to ensure accurate financial reporting. Perform consolidations and intercompany eliminations. Maintain and timely update equity rollforward and capitalization table for investor submissions. Collaborate with various process owners and departments to collect information needed for financial statement footnotes. Facilitate leadership review of the financial statements and timely address comments received. Responsible for tracking open audit request items and timely providing requested items for audit completion. Prepare annual GAAP checklist. Participate in process walkthrough meetings for the audit. Obtain details and prepare acquisition footnote where applicable. Review P&L coding to ensure proper presentation of related costs. Prepare year-end going concern analysis and memo. Assist with internal ad-hoc reporting/requests. WHAT YOU’LL NEED: Bachelor’s degree, advanced degree a plus . CPA with Big 4 experience. 8-10 years of public and/or private accounting experience. Excellent analytical, problem-solving, and organizational skills. Ability to work independently and in a team envi

WHO WE ARE: Zinnia is the leading technology platform for accelerating life and annuities growth. With innovative enterprise solutions and data insights, Zinnia simplifies the experience of buying, selling, and administering insurance products. All of which enables more people to protect their financial futures. Our success is driven by a commitment to three core values: be bold, team up, deliver value – and that we do. Zinnia has over $180 billion in assets under administration, serves 100+ carrier clients, 2500 distributors and partners, and over 2 million policyholders. WHO YOU ARE: You are a Techno-functional Product Manager with 5+ years of Product Management experience who thrives at the intersection of technology and business. You will be responsible for driving product initiatives, managing integrations, and collaborating closely with cross-functional teams to deliver scalable and impactful solutions. WHAT YOU’LL DO: Contribute into the execution of all product lifecycle processes for products, including product research, market research, competitive analysis, planning, positioning, roadmap development, requirements development, and product launch Analyse consumer needs, current market trends, and potential partnerships from an ROI and build vs. buy perspective Gain a deep understanding of existing systems, customer experience, identify and fill product gaps and generate new ideas that grow market share, improve customer experience and drive growth Works with a cross-functional team to ensure fulfilment of product requirements, evaluates product performance and transition products from development to commercialization. Assists in determining product delivery and deployment dates for new product releases, feature and maintenance releases and regular corrective service or service pack releases. Assist in Developing and executing proposed business and technical solutions. Work with engineering teams to design and manage API integrations across platforms. Assist

WHO WE ARE: Zinnia is the leading technology platform for accelerating life and annuities growth. With innovative enterprise solutions and data insights, Zinnia simplifies the experience of buying, selling, and administering insurance products. All of which enables more people to protect their financial futures. Our success is driven by a commitment to three core values: be bold, team up, deliver value – and that we do. Zinnia has over $180 billion in assets under administration, serves 100+ carrier clients, 2500 distributors and partners, and over 2 million policyholders. WHO YOU ARE: You are a Techno-functional Product Manager with 5+ years of Product Management experience who thrives at the intersection of technology and business. You will be responsible for driving product initiatives, managing integrations, and collaborating closely with cross-functional teams to deliver scalable and impactful solutions. WHAT YOU’LL DO: Contribute into the execution of all product lifecycle processes for products, including product research, market research, competitive analysis, planning, positioning, roadmap development, requirements development, and product launch Analyse consumer needs, current market trends, and potential partnerships from an ROI and build vs. buy perspective Gain a deep understanding of existing systems, customer experience, identify and fill product gaps and generate new ideas that grow market share, improve customer experience and drive growth Works with a cross-functional team to ensure fulfilment of product requirements, evaluates product performance and transition products from development to commercialization. Assists in determining product delivery and deployment dates for new product releases, feature and maintenance releases and regular corrective service or service pack releases. Assist in Developing and executing proposed business and technical solutions. Work with engineering teams to design and manage API integrations across platforms. Assist