• Own PE activities for assigned FHS NPI programs from first silicon through mass production release; drive product conformance to specifications and seamless transfer to full-volume manufacturing • Lead wafer analysis and yield improvement initiatives; own yield loss Pareto, root cause investigation, and corrective action closure for CP and FT yield deviations • Own BOM reconstruction and maintenance in Agile PLM and SAP for all FHS test hardware and product configurations; maintain full documentation with no single-person knowledge dependency • Drive process improvement and CIP activities; monitor yield and quality metrics across processing steps, identify trends and anomalies, and implement targeted solutions • Lead manufacturing qualifications and data analysis for alternate OSAT qualification programs; coordinate handler qualification, correlation lot design, Cpk analysis, and sign-off matrices • Own RMA verification and customer escalation analysis; lead failure investigation and corrective action implementation to enhance FHS product quality and test coverage • Drive PAT/SBL/SYL implementation across FHS product families; establish statistical process control baselines at primary and alternate OSATs and integrate with yield analytics platforms • Support automotive qualification activities; assist in reliability testing coordination and qualification data package preparation • Collaborate with cross-functional teams including R&D, Test Engineering, Quality & Reliability, Applications Engineering, and Operations to drive NPI milestones and production continuity

Join a dynamic team at the pulse of global markets, where we deliver innovative software and service solutions for essential financial reporting and capital markets transactions. At DFIN, we are a values-driven organization that empowers you to build a fulfilling career while bringing your authentic self to work every day. Our "Win as One" mentality ensures that our team's success is directly linked to Client, Shareholder and Employee Satisfaction. Recognized as one of AMERICA'S MOST LOVED WORKPLACES® for five consecutive years and a Built In Best Places to Work for six years, we are committed to our employees' total well-being. Enjoy competitive compensation, a flexible workplace, comprehensive benefits, and opportunities for professional growth. Bring your passion and talents to DFIN - because being YOU thrives here. Summary: We are looking for technical team members at all levels who want to push themselves to deliver best in market SaaS solutions. We offer a challenging environment where you will have to grow, adapt and use your skills consistently. Our customers rely on us in the moments that matter. Engineering delivers on that promise. You can read the bullets below. But they almost always look the same, right? Here is the deal - being a principal engineer here at DFIN means helping us deliver SaaS software solutions for our customers that primarily work with the SEC or other global regulating bodies. Our products are in demand because we solve regulatory problems for our customers. As a principal engineer, you'll own projects end to end, write code that others will look towards as a standard, understand how we operate our systems and make sure our technology continues to evolve and improve. This isn't your simple, run-of-the-mill, boring system. This is a system with an interesting mix of design challenges such as eventual consistency, messaging, concurrency, network resiliency, data replication, load/demand prediction, observability engineering, build/deployment optimization, and AI. Responsibilities: • Design and implement concise, modular, cohesive, frontend and backend services in a distributed system context that are resilient, efficient, and reliable.• Ensure automated tests and test frameworks are highly effective in terms of software quality, refactor flexibility, and integration/delivery speed.• Concurrent and asynchronous software design/development.• Advanced asynchronous and resilient network communications design and implementation.• Design, refactor, implement, or work within micro-frontend SPA(s).• Judiciously leverage AI, ML, and vector databases in both software development workflows and product feature development.• Decompose/distill complex software components along appropriate boundaries.• Development on/of complex, but potentially irreducible algorithms or combinatorials.• When apparently irreducible problems are encountered and they resist beneficial decomposition (np-ness), find ways to simplify through approximation theory and quantization.• Extensively use all aspects of observability systems: instrumentation of code, well-designed queries, dashboards, alerts, and distributed traces.• Maintain awareness of production system performance, errors, and code usage.• O11y data driven optimization of latency, compute, memory, storage, and network traffic.• Communicate with clarity using O11y screens, PRs, POCs, diagrams, documentation, and presentations to other developers, dev teams, SREs, and management.• Optimization of local/cloud build, deployment, and IaC provisioning pipelines.• Rigorous analysis of escaped defects to determine corrective actions with depth of insight.• Design and develop defensively to maintain or increase security going beyond OWASP and zero trust patterns by truly understanding the area of the system being worked on.• Rigorous and proficient review and clear feedback on pull requests by team members.• Maintain awareness of current relevant technologies, techniques, and tooling.• Build software with people. Product managers, other developers, SREs, junior engineers, senior engineers, and offshore. Construct software that matters!• Constantly address technical debt. Shine a light on it, even when it hurts.• Participate in the planning of technical engineering roadmaps.• Plan, lead, or manage projects when called upon to do so while remaining hands on. Qualifications: • Commitment to your software development, the products you work on, and the firm.• 6-15+ years of experience working in full stack distributed systems.• Experience meeting secure coding standards and willing to participate in financial systems security practices.• Ability to explain complex topics to managers/directors, program/product managers • Non-negotiables o Proficient in one of and willing to work on all of C#, Node JS, Java, Typescript services o REACT (strongly preferred), Angular, or other SPA frontend development tech stack o Concurrency and/or asynchronous operations experience. o Typescript/JavaScript • Moderate to deep experience with roughly 50% or more of the following o Redux/Redux-Saga o Browser APIs o Compute/memory/latency profiling of SPA apps or backend services o Algorithm design/optimization and combinatorial problem solving. o Javascript V8 Engine knowledge/experience o Messaging systems using tech like Azure Service Bus, Rabbit MQ, etc. o Distributed systems design/adaptation or P2P systems experience o JS immutable data structures o SPA Micro-frontends o In depth REST, WebSockets, gRPC, graphQL, or other API experience o Frontend test frameworks o Browser Canvas o OCI container usage such as Docker, Podman, and/or AKS/Kubernetes o Stream processing or functional reactive programming. o RDBMS such as SQL Databases such as SQL Server or PostgreSQL o Moderate to deep HTTP protocol/Networking insight o Azure (Preferred), AWS (Plus), and/or GCP (Translates) o Build pipelines and ideally IaC such as Terraform Education: • BS in Computer Science or equivalent work experience. It is the policy of Donnelley Financial Solutions to select, place, and manage all its employees without discrimination based on race, color, national origin, gender, age, religion, actual or perceived disability, veteran status, actual or perceived sexual orientation, genetic information or any other protected status. If you are a qualified individual w ith a disability or a disabled veteran, you have the right to request a reasonable accommodation if you are unable or limited in your ability to use or access jobs.dfinsolutions.com as a result of your disability. You can request a reasonable accommodation by sending an email to talentacquisition@dfinsolutions.com . At DFIN, protecting your identity is a top priority. Please be aware of scammers impersonating DFIN recruiters. DFIN recruiters will never request personal information via email or text. You will only receive a text from us if you've already been in contact. All automated messages will come from talentacquisition@dfinsolutions.com . If you ever have doubts about the legitimacy of any communication from us, please do not hesitate to reach out for verification via talentacquisition@dfinsolutions.com (this email is for general TA questions and is not used for updates on your application status). #BI-Remote

Role Description We are hiring a VP & Staff Software Engineer to take ownership of the platform’s most critical technical domains: - Payments pipeline (collections, revenue splitting, treasury operations) - Billing engine (subscription lifecycle, cycle management, automated renewals) - Integration layer (BSS/OSS sync with partner systems) You will work directly with the CTO and a small team of engineers to ship production systems that handle real financial transactions for real ISP partners. This is the most senior individual contributor role on the engineering team. You are expected to: - Make architectural decisions - Write production code - Review others’ work - Unblock the team when they hit technical walls You will not manage people. You will build systems. What you will own - Payments domain: - SasaPay collections integration (C2B API, STK push, IPN handling) - Revenue split engine (per-partner, per-BNG percentage logic) - ChoiceBank treasury operations (withdrawals, internal transfers, OTP flows) - Payment completion handler that bridges payment confirmation to subscriber activation - Billing engine: - Subscription and BillingCycle lifecycle - Automated renewal cron - Grace period enforcement - Plan change mid-cycle logic - Event-driven communication triggers that notify subscribers at every billing moment - Integration layer: - Splynx adapter (plan sync outbound, subscriber sync inbound, activation webhooks) - Custom webhook delivery engine - Event routing that connects domain events to external system notifications - Architecture decisions: - Service boundaries - Event contracts (Kafka) - Data model evolution (Prisma/PostgreSQL) - API design for both public and private endpoints - Migration strategy from the legacy Next.js monolith to the NestJS microservices platform Technical environment - Backend: - NestJS monorepo with 7 microservices (CRM, Billing, Payments, Ledger, Communications, Provisioning, Integrations) - TypeScript end-to-end - PostgreSQL with Prisma ORM (shared database, service-scoped access) - Kafka message bus (migrating from RabbitMQ) for inter-service communication - Redis for caching, queues, rate limiting, and idempotency - REST API gateway with Swagger documentation - Payments and financial systems: - SasaPay (OAuth 2.0, C2B collections, B2B transfers, IPN webhooks) - ChoiceBank BaaS API (KYC, internal transfers, OTP-based withdrawal confirmation) - Revenue split engine with per-partner/per-BNG/per-plan configuration - Double-entry ledger (AccountTransfer, AccountLedgerEntry, AccountRevenueSplit) - M-Pesa STK push integration via SasaPay as collections gateway - Infrastructure and tooling: - GitHub Actions CI/CD, SSH deployment to VMs - Sentry for error monitoring, Loki + Pino for structured logging - Circuit breaker patterns, provider failover, webhook signature verification - FreeRADIUS integration for network subscriber provisioning - Legacy system: - Next.js application with API routes - Shared Prisma schema with the new platform - Active development continues on both repos simultaneously during migration Requirements - 7+ years of professional software engineering experience, with at least 3 years in backend systems handling real financial transactions - Deep TypeScript/Node.js expertise - Production experience with payment gateway integrations (M-Pesa, Stripe, Adyen, or similar) - Strong PostgreSQL skills - Experience with event-driven architectures (Kafka, RabbitMQ, or similar) - You ship. You can take a spec document and turn it into production code without waiting for someone to break it into small tasks Strong preference - Experience in East African fintech or mobile money ecosystems - Experience with ISP billing systems, RADIUS protocols, or telecommunications platforms - Experience with Prisma ORM and NestJS specifically - Production experience with multi-tenant SaaS platforms - Track record of migrating monolithic systems to microservices while keeping production running AI-augmented engineering (required mindset) We expect every engineer at Share to use AI tools as a daily part of their workflow. This is not optional and not aspirational — it is how we operate. - You already use AI coding assistants daily and can articulate how they change your workflow - You are comfortable working with AI-generated specifications and can critically evaluate them - You see AI as a force multiplier that lets a small team operate at the capacity of a much larger one - You are willing to contribute to improving our AI-assisted workflows Benefits - A seat at the table while we build the technical backbone of Africa’s next-generation internet - Competitive salary and meaningful equity in a mission-driven, investor-backed company - Private health and wellness benefits - A high-ownership environment with a steep but well-supported learning curve

• Drive end-to-end implementations and solutions for hotel partners • Own the customer technical journey from discovery to deployment • Build scalable integration frameworks • Enable rapid onboarding by identifying implementation patterns • Shape the product roadmap through direct customer insights • Develop strategic partnerships with sales and go-to-market teams