RP Professional Services, LLC (RP) is a rapidly growing government consulting firm headquartered in Ashburn, Virginia. We’re an 8(a), Service-Disabled Veteran-Owned Small Business (SDVOSB) that exclusively enables the missions of U.S. Federal agencies through superior mission support and technology integration. Our dedication to our employees and clients is driven by our promise to deliver Excellence, Value, and Flexibility. "People, not just Resources" is more than our motto; it's the foundation on which we are built! At RP, we take pride in who we are and what we deliver. The Mobile Developer will design, build, enhance, and support mission-critical, public-facing mobile applications for Department of Homeland Security (DHS) components, with a focus on Transportation Security Administration (TSA) mobile products. This role requires deep, hands-on native support for legacy and modern mobile stacks to sustain and evolve existing production applications. The ideal candidate has experience delivering secure government mobile solutions, operating within governed delivery processes, implementing CI/CD pipelines, and managing app distribution through enterprise channels and public app stores. Experience with cross-platform development using Flutter and/or React Native is strongly desired. - Provide primary engineering support for legacy native codebases, including iOS and Android implementations. - Support iOS applications using UIKit, Storyboards/XIBs, Auto Layout, navigation patterns, and legacy architectural patterns. - Support Android applications using XML layouts, data binding or view binding, RecyclerView-based UIs, fragments and activities, and backward compatibility approaches. - Build new mobile applications from the ground up, including architecture design, environment setup, and release planning. - Enhance and sustain public-facing mobile applications supporting DHS/TSA mission needs, including ongoing maintenance, performance improvements, security updates, and defect remediation. - Operate within TSA mobile development processes, protocols, and governance, including required documentation and approvals. - Maintain and improve the mobile CI/CD pipeline, including automated builds, testing, signing, and deployment workflows. - Deploy applications through TSA’s Enterprise App Distribution platform as needed. - Implement and support Firebase services, including Firebase Cloud Messaging (FCM) for push notifications. - Manage end-to-end Apple App Store and Google Play Store submission, review, release, and distribution processes. - Collaborate with cross-functional Agile teams including product, design, security, QA, and DevOps to deliver iterative improvements. - Ensure applications meet accessibility standards, including Section 508 compliance and mobile platform accessibility conventions. - Use Git effectively, including branching strategies, pull requests, code reviews, and collaborative development workflows. - Apply strong mobile UX/UI principles to deliver intuitive and consistent user experiences across platforms. - Develop and maintain cross-platform mobile applications using Flutter and/or React Native and associated technology stacks.

Role Description Complexio's engineering organisation is structured across multiple specialised teams — covering core platform, data structures and the Event Knowledge Graph, the Connections layer, Stevie product, Enterprise Automator, and developer experience. Each team moves fast. The Senior Principal Engineer exists to ensure they move fast in the same direction. This is a horizontal leadership role, not a team lead position. You do not own a single product domain — you own the engineering standards, architectural principles, and technical consistency that apply across all of them. You are the person every team can turn to when a decision has cross-cutting implications, and you are the person who notices when two teams are solving the same problem differently and fixes it before it becomes technical debt. You will work closely with the Co-CEO (Product & Technology), team leads, and senior engineers across the organisation to define, communicate, and continuously evolve the engineering principles that underpin how Complexio builds software. You will also be a regular presence in the Operational Leadership Team (OLT) — Complexio's cross-functional decision-making backbone — bringing the engineering standards perspective into product, delivery, security, and commercial decisions before they create downstream technical consequences. This is a deeply hands-on role — you are expected to be in the code, in the architecture discussions, and in the design reviews, not operating at a purely strategic remove. The right person for this role has seen what happens when fast-growing engineering organisations fragment — inconsistent patterns, duplicated infrastructure, integration friction, security gaps, and compounding maintenance burden — and is motivated to prevent it. You bring the experience, the authority, and the communication skills to set and hold a high bar across the whole engineering function. Qualifications - 12+ years of professional software engineering experience, with a substantial portion in senior, staff, or principal engineer roles with cross-team scope - Demonstrable experience defining and enforcing engineering standards, architectural principles, or technical governance across multiple teams or products - Deep expertise in distributed systems design — event-driven architectures, graph data models, API design, microservices, and data pipeline patterns - Strong command of at least one primary backend language (Python, Go, Java, or equivalent) and broad familiarity across the stack - Hands-on experience with cloud-native infrastructure — containerisation (Docker, Kubernetes), CI/CD pipelines, infrastructure as code, and cloud platforms (AWS, Azure, or GCP) - A proven ability to make and communicate clear, well-reasoned architectural decisions under uncertainty — and to bring teams along with you - Experience with security engineering principles: authentication and authorisation patterns, secrets management, encryption, and enterprise compliance requirements - Strong technical writing — able to produce standards documents, ADRs, and architecture guides that are clear, durable, and actually adopted Requirements - Participate actively in the OLT — Complexio's cross-functional operating forum spanning Stevie Product, Enterprise Automator, Customer Platform Operations, Core Platform & Data Structures, Connections, Developer Experience, Security, Sales, and Commercial functions - Represent the engineering standards dimension in OLT discussions — surfacing technical implications of product, commercial, and delivery decisions before they are locked in - Ensure that commitments made at OLT level — to customers, to the board, or across teams — are technically feasible and consistent with Complexio's architectural direction - Bring cross-team engineering issues, risks, and blockers to the OLT with clarity and proposed resolution — not just problem statements - Act as the connective tissue between OLT-level strategic decisions and their practical implementation across engineering teams — translating direction into standards and standards into action - Define, document, and maintain Complexio's engineering principles — the foundational decisions about how we build, structure, test, deploy, and operate software across all teams - Establish and govern coding standards, design patterns, and architectural conventions that apply platform-wide — ensuring consistency without stifling team autonomy - Own the technical standards backlog — identifying where standards are absent, contradictory, or outdated, and driving resolution with the relevant teams - Ensure standards are practical, well-reasoned, and adopted — not just written down; you are accountable for the gap between documentation and reality - Serve as the senior architectural authority across all engineering teams — providing input, challenge, and guidance on decisions with cross-cutting implications - Lead or co-lead architectural design reviews for significant new capabilities, integrations, or platform changes — ensuring decisions are consistent with Complexio's long-term technical direction - Identify and resolve architectural conflicts, duplication, and inconsistency across teams before they compound into larger structural problems - Maintain a living view of Complexio's overall system architecture — ensuring it remains accurate, accessible, and useful to engineers across the organisation - Define and govern integration patterns between Complexio's core components: EKG, Context Broker, Orchestration layer, Enterprise Automator, Stevie, and the Connections layer - Own Complexio's Architecture Decision Record (ADR) process — ensuring significant technical decisions are documented, reasoned, and accessible across the engineering organisation - Chair or actively participate in cross-team technical forums, design reviews, and engineering guilds - Define escalation criteria for architectural decisions — what can be decided at team level, what requires cross-team alignment, and what requires principal engineer sign-off - Provide a decisive, well-reasoned position when teams are blocked by conflicting approaches or unresolved design questions - Act as the final technical review point for decisions with significant security, scalability, or inter-system integration implications - Define and track engineering health metrics across the organisation — including test coverage standards, incident rates, deployment frequency, build stability, and technical debt ratios - Identify systemic quality issues that span multiple teams and drive coordinated remediation - Establish and evolve Complexio's standards for observability, logging, alerting, and incident response — ensuring every team is operating to a consistent and appropriate level of operational maturity - Champion a culture of code review rigour — setting expectations for what good review looks like and supporting teams to meet that bar - Own and evolve Complexio's approach to automated testing — unit, integration, end-to-end, and performance — across the full platform - Ensure security principles are embedded into Complexio's engineering standards — not bolted on after the fact - Define and govern security-relevant patterns across the platform: authentication, authorisation, RBAC, data encryption at rest and in transit, secrets management, and audit logging - Work with the Head of Security and Solutions Consultant to ensure that the platform's security architecture can be accurately and confidently represented to enterprise customers in due diligence processes - Identify and remediate security anti-patterns across the codebase through systematic review and standards enforcement - Ensure Complexio's deployment architecture — including customer-hosted and Complexio-managed environments — is consistent with documented security standards and enterprise compliance requirements - Own the internal engineering knowledge base — ensuring that standards, patterns, ADRs, and architectural documentation are maintained, findable, and actually used - Run regular cross-team engineering forums — creating structured opportunities for teams to share learnings, surface conflicts, and align on direction - Identify repeated friction points in the developer experience and work with the DevEx team to address them systematically - Mentor senior engineers across the organisation — raising the overall technical bar through hands-on code review, design guidance, and direct coaching - Produce clear, accessible technical writing — standards documents, design guides, and architecture references — that engineers at all levels can act on - Remain an active, hands-on contributor to the codebase — particularly on foundational, cross-cutting components where your decisions will set the pattern for other teams to follow - Prototype and validate architectural approaches before they are adopted platform-wide — proving decisions in code, not just in diagrams - Conduct deep technical investigations into persistent or systemic issues — providing root cause analysis and remediation plans that address the underlying pattern, not just the immediate symptom - Set the technical example: your code, your reviews, and your design discussions define the standard others are expected to reach Benefits - A rare opportunity to shape the engineering culture and technical foundations of a fast-growing enterprise AI company from an early stage - Horizontal influence across the entire engineering organisation — your decisions matter at scale - Competitive senior compensation with equity participation aligned to Complexio's growth trajectory - Direct access to Co-CEO product and technology leadership — decisions move fast and your input will be acted on - A technically ambitious environment: the problems are genuinely hard, the platform is genuinely differentiated, and the engineering team is genuinely capable - Remote-first working with a high-trust, low-bureaucracy culture

• Design and build intelligent automation solutions that streamline operations across the organization. • Partnering with Client Operations, Finance, People, and other G&A teams, leverage AI, workflow automation, and integration tools to eliminate manual work and drive efficiency at scale. • Design, develop, and deploy automation workflows that reduce manual effort and improve accuracy across back-office functions. • Apply artificial intelligence, machine learning, and modern automation tools to solve complex operational challenges and unlock new efficiencies. • Collaborate with Client Operations, Finance, People, and other G&A teams to identify automation opportunities, gather requirements, and deliver solutions that meet business needs. • Build and maintain integrations between platforms (Salesforce, JIRA, HRIS, ERP, etc.) to enable seamless data flow and process automation. • Develop robust, well-documented solutions with proper error handling, monitoring, and testing to ensure long-term stability. • Monitor automation performance, identify optimization opportunities, and iterate on solutions based on user feedback and data.

• In langjährigen Kundenprojekten wirst Du die Wartung, Pflege und Weiterentwicklung der vorhandenen Bestandssysteme aus den Bereichen Handel, Produktion, Versicherungen und Banken mit übernehmen • Die Analyse, Konzeption und auch Umsetzung von Anforderungen seitens des Kunden, nebst der Erstellung der dazugehörigen Dokumentation • Gezielte Unterstützung unserer Kunden in Themen der Modernisierung, sei es der reibungslose Umstieg auf FullFree, die Nutzung graphischer Oberflächen bis hin zum Einsatz von Webservices- natürlich nicht allein, sondern stets mit Rückenwind des Teams • Der aktuelle Einsatz ist in einem langfristigen Projekt bei unserem langjährigen Kunden in der Versicherungsbranche. Es geht um Neuentwicklungen, welche nur noch in FreeRPG mit SQL gemacht werden.