Where rising standards meet global demands.
Radio Frequency Software Engineer Principal
Location
United States
Posted
1 day ago
Salary
$150 - $200 / hour
Seniority
Lead
Job Description
Radio Frequency Software Engineer Principal
Global InfoTek, Inc.
Role Description GITI is seeking a Principal Software Engineer to support Cyber Operations Research and Development as the technical lead for production software development on a passive RF emitter identification and network analysis from real-time sensor data streams. The candidate will own the architecture, implementation, and delivery of the production pipeline — a stream ingestion, rollup, and post-processing system that operates on NDF (Network Description File) data produced by TDMA network sensors in dense, contested RF environments. This is a hands-on technical leadership role: the Principal Engineer writes code, makes architecture decisions, and is accountable for pipeline performance and reliability in support of real-world cyber operations. Responsibilities - Own the architecture and implementation of the production software pipeline, including stream ingestion, rollup, database write, and batch post-processing components. - Lead a team of Senior Software Engineers in support of real-world cyber operations; assign work, conduct code reviews, enforce quality standards, and provide technical mentorship. - Establish and maintain disciplined software engineering practices: versioning, CI/CD pipelines, unit and integration testing, and documentation standards. - Design and evaluate database and storage architecture for the tactical system and research enclave environments. - Collaborate with the program technical lead to translate research findings and batch optimization algorithms into production pipeline components. - Evaluate and benchmark Python pipeline performance on tactical-box-spec hardware; identify bottlenecks and lead porting of mature components to Rust or C for edge deployment. - Manage and coordinate the tactical system VM environment and stream simulation infrastructure; ensure research VM is not disrupted by development activity. - Define and enforce stream interface contracts between the ingestion layer, database, and downstream consumers. - Evaluate emerging technologies (e.g., DuckDB/Parquet, Polars, message queues) against program requirements and recommend adoption decisions to the technical lead. - Maintain the program's GitLab repository structure, branching strategy, and release management. - Produce clear technical documentation including architecture decision records, interface specifications, and deployment guides. - Support technical reviews and provide written inputs for sponsor deliverables as directed by the program technical lead. Qualifications - Expert-level career professional with broad and deep application of software engineering principles across the full development lifecycle. - Exercises independent judgment in evaluating methods, techniques, and approaches; identifies and resolves complex technical problems with significant program impact. - Provides technical leadership and direction to other engineers. - Bachelor's (or equivalent) with 10+ years of experience. Requirements - Demonstrated experience leading a software engineering team on a production data pipeline or streaming system; ability to set technical direction and mentor junior engineers. - Expert-level Python development, including stream processing, multi-threaded/async architectures, and performance profiling. - Proficiency in one or more compiled or systems languages (Rust, C, C++, or Go) for performance-critical components; experience porting Python to compiled targets. - Hands-on experience designing and implementing relational database schemas and write-intensive data pipelines (MySQL, PostgreSQL, or equivalent). - Experience parsing binary serialization formats such as FlatBuffers or Protocol Buffers in a production context. - Demonstrated ability to benchmark and optimize pipeline throughput on resource-constrained hardware or cloud environment. - Strong proficiency with Linux system administration, remote server management via SSH, and air-gapped development environments. - Experience architecting multi-consumer data systems where a single write path must serve concurrent display, analytics, and batch processing readers. - Proficient in disciplined software engineering practices: GitLab/Git, CI/CD pipeline design, test-driven development, and code review. - Excellent written and oral communication skills; ability to produce architecture decision records and technical documentation for both engineering and leadership audiences. Desired Skills - Experience with TNS (Target Network System) sensor data formats and NDF ICD specifications. - Familiarity with TDMA network protocols, time-division access architectures, and passive RF signal processing concepts. - Experience deploying and operating software on tactical edge hardware co-located with a sensor system. - Experience with lightweight stream or message queue architectures (ZeroMQ, RabbitMQ, or equivalent). - Experience with Polars or DuckDB for high-performance analytical workloads and write-once/read-many storage patterns. - Experience with LLM-assisted software development tools (e.g., Claude Code, GitHub Copilot, JetBrains AI Assistant, or equivalent); demonstrated ability to use AI tools productively for code generation, refactoring, and test case development while maintaining engineering judgment and code quality standards. - Familiarity with AI/ML model inference integration — ability to incorporate batch optimizer outputs into the production pipeline without requiring ML expertise. - Experience with browser-based data visualization or reporting tools (React, D3, or equivalent) as a consumer of pipeline output. - Experience with Jupyter Notebooks and research enclave environments; ability to bridge from research prototype to production code. - Experience with FlatBuffers binary stream replay and simulation infrastructure for pipeline testing. - Familiarity with Rust toolchain and ecosystem for systems-level development on Linux. Relevant Certifications - Certifications in software engineering, computer science, or related fields (e.g., Certified Software Development Professional (CSDP); Certified Secure Software Lifecycle Professional (CSSLP); Red Hat Certified Engineer (RHCE); C++ Certified Professional Programmer (CPP); Professional Software Developer Certification (PSD); etc.).
Related Guides
Related Job Pages
More Full-stack Engineer Jobs
• As a Senior PLC Engineer, you'll own the controls software that keeps our infrastructure online. • This is a hands-on build role. • You'll take an architecture from concept to commissioned, running system, programming the PLCs and SCADA and writing the software, services, and tooling around them. • Design, develop, test, and commission PLC programs on Siemens (TIA Portal, S7-1500/1200) and/or Rockwell/Allen-Bradley (Studio 5000, ControlLogix/CompactLogix) platforms, using IEC 61131-3 languages (Structured Text and ladder), for cooling and mechanical plant equipment: CDUs, chillers, hydraulic skids, fan walls, DOAS, and pumps. • Develop the supervisory logic for the Master Plant Controller, including equipment staging, lead/lag, setpoint reset, failover, and plant-level coordination across multiple skids. • Build and maintain the SCADA/HMI layer (Siemens WinCC, Rockwell FactoryTalk View, or Ignition): operator screens, alarming, trending, historian, and access control. • Write robust safety logic, interlocks, and alarm strategies for pressurized and high-power equipment, and uphold a safety-first engineering standard. • Integrate OEM-controlled equipment such as chillers and DOAS over Modbus TCP, BACnet, OPC UA, EtherNet/IP, and PROFINET, defining and validating register and object maps. • Build process simulations and digital twins (Siemens PLCSIM Advanced / SIMIT, Rockwell Studio 5000 Emulate / Emulate3D, or scripted models) to validate logic and tune control loops before site deployment. • Lead field commissioning, startup, and loop checks. Troubleshoot live systems and drive issues to resolution. • Apply real software engineering practices to controls work: version control, code review, modular and reusable function-block libraries, and clear naming and documentation standards. • Build the general-purpose software around the controls stack: data pipelines, monitoring and telemetry services, edge and cloud integrations, internal tooling, and automation that connects plant data to the rest of Giga's systems. • Translate the controls engineer's architecture and sequence-of-operations into working, well-structured, maintainable code. • Operate comfortably in ambiguous, unstructured environments and solve problems where established processes don't yet exist.
• Develop and customize the internal developer portal using the SaaS platform's public APIs and webhooks. • Design, develop, and maintain microservices and RESTful/asynchronous APIs using Python (FastAPI, Django or Flask). • Implement front-end improvements using JavaScript and jQuery, ensuring an excellent user experience. • Deploy, scale, and operate applications on AWS, Azure, or GCP using Docker, Kubernetes, Serverless, and managed services. • Collaborate with DevOps teams to build and maintain CI/CD pipelines, infrastructure as code (Terraform/CloudFormation), automated testing, and deployment processes. • Monitor and optimize application performance, availability, security, and scalability. • Participate in architecture reviews and code reviews, promoting development best practices.
Senior Software Engineer - Fullstack, US Remote
BrigitBrigit, also known as Bridge IT, has developed financial wellness software to “help everyday Amercians build a brighter financial future.” As an employer, t
Hi, we're Brigit! A holistic financial health company helping everyday Americans build a brighter financial future. With a business model that is aligned with our customers, we create transparent, fair, and simple financial products that put money back in the hands of our members, help them spend wisely, avoid unfair fees and build their credit quickly. If autonomy, ownership, and having meaningful input at the company you work for is important to you, come join our growing team! Brigit is doing innovative and exciting work, but don’t just take our word for it, our work is being recognized by others: - Built In's 2026 Best Midsize Companies to Work For in New York City - Built In's 2025 Best Places to Work For In New York City - Built In’s 2024 & 2025 Best Startups to Work For In the U.S. - Built In’s 2023 - 2025 Best Startups to Work For In New York City - Fast Company’s Most Innovative Companies of 2022 - Business Insider’s Most Promising Consumer Startups 2022 - Forbes Fintech 50 2022 Role Overview: Brigit is looking for senior fullstack engineers to help us scale our next-generation consumer finance platform to millions of users in the next year. We’ve found tremendous traction helping low income Americans make ends meet; now is the time to scale. We’ve built a mobile/web app on React and React Native with Typescript, and a backend of Java services in Google Cloud. It’s served us well so far, but we need help making it even better. Our team has two main goals: 1) Feature development supporting numerous external and internal applications. The next generation of our product may look nothing like it does today - and we welcome that! The degree to which we implement new user flows, compute our proprietary algorithms, integrate with 3rd party APIs, store data, and serve traffic will make or break our success. 2) Scalability of our customer-facing applications. Growing from 100k to 10 million users presents unique technical challenges. The efficiency and reliability of both our customer-facing and internal tools needs to improve. We have fun Data Engineering tasks, automation procedures, and availability/monitoring problems to tackle. We also have many user-facing projects, including the creation and upkeep of components and libraries, GraphQL API design, testing and QA processes, and CI/CD enhancements. Our team is small and nimble; you'll be given an extraordinary amount of autonomy and ownership. More importantly, you have a large say in the direction of the company -- both in terms of our technology and our product. Recent accomplishments of our team are: - Building a Payments API platform that moves millions of dollars on a daily basis - Implementing the advanced mathematical processes behind our proprietary risk algorithm - Normalizing relational database schema to optimize for performance for over 1 million users - End to end User notification (via SMS, Email, Push) capabilities - Building internal tools that enable our Customer Support Specialists to help our customers ASAP One of our greatest strengths is the speed at which we move. If you want to propose a new way of doing things, we are all ears. If you have an idea for a new feature, we'll be open to it. A new design paradigm? Bring it on. At Brigit you can enjoy a mature CI/CD platform with automated deployment processes, an easy-to-use local/staging/production development environment, and teammates willing to fill in the gaps. We automate manual things so we can focus on thinking and building something that helps people. As a fullstack engineer we’re looking for someone with experience owning a feature from start to finish on both the frontend and backend. We don’t expect everyone to know everything in our stack, but having one side of overlap (frontend/backend) that you feel very comfortable with will set you up for success here. We are ideally looking for NYC-based folks who can join us in the office 2–3 days a week. However, we're open to remote candidates! If you are applying remotely, please note that we are only considering candidates located in the EST or CT time zones who can work East Coast hours. What You'll Be Doing: - Evolving the APIs supporting User flows to ensure a great user experience - Optimizing queries and relational database schema to ensure speedy response times - Implementing algorithms related to monetary transaction evaluation, risk management, income verification, and other predictive models - Integrating with new 3rd party APIs to serve millions of customers - Decreasing our customer service workload by building improvements to the product or improving our internal automations - Implementing interaction and motion design for more delightful user experiences - Automating visual testing & visual regression detection processes - Creating new mobile & web clients for upcoming products - A/B testing and optimizing features that boost our business’ bottom line What you have: - 6+ years of industry experience as a software engineer - REST based services and API development experience mainly using Java - Experience building UI/UX for new features from end-to-end using React or React Native - GraphQL experience a plus - Up-to-date grasp of the constantly evolving JS language standards, ES6 and beyond (we use Typescript) - Experience with SQL databases, constructing schemas, performing migrations and writing analytical queries - Kubernetes, Docker or other container system experience is a plus - Quantitative skills, knowledge or experience in Finance is a plus - Experience leading teams or mentoring junior engineers is a plus - You are a self-starter, self-motivated, and able to work independently and manage multiple projects under minimal supervision The Interview Process: - Technical Interview, Java, Testing and Debugging - Pair program with an engineer using HackerRank. This interview will be in Java and is an exercise meant to show off your fundamental coding skills. In this session, you’ll work with an engineer to test, debug, and fix a faulty data structure implementation. - Team Behavioral + Take Home Project - Team Behavioral - Meet with one of our Engineering Managers to discuss your approach to collaboration, communication, and alignment with our team values and culture. - Take Home Project, React - You will be asked to re-create a simple game of Black Jack. This is an opportunity to showcase your process and approach for creating a working realish-world feature/product in a React environment. - Final Interviews - Technical Interview, System Design - Meet with an engineer and work through API-related business problems. - Take Home Follow-Up - In this interview, the team will walk through your initial Blackjack assessment with you. They’ll review the overall structure, discuss any bugs or issues they’ve identified, and work with you to add additional functionality or enhancements to the project. - Technical Interview, Service Architecture - Meet with one last engineer for a conversational interview around your architecture-related experience. The anticipated annual base salary for this position is $170,000 - $190,000. This range does not include any other compensation components or other benefits for which an individual may be eligible. The actual base salary offered depends on a variety of factors, which may include as applicable, the qualifications of the individual applicant for the position, years of relevant experience, specific and unique skills, level of education attained, certifications or other professional licenses held, and the location in which the applicant lives and/or from which they will be performing the job. Our Benefits & Team - Medical, dental, and vision insurance - Flexible PTO Policy - 401k plan - Paid Parental Leave - Physical and mental wellbeing benefits including Wellhub for access to virtual workouts and discounted gym memberships, and Headspace for covered virtual therapy sessions and unlimited on demand health support - Monthly reimbursements to use against wifi and cell phone bills - Annual reimbursement for Learning & Development - Help hard working Americans build a brighter financial future - High-growth company - A dynamic, flexible and collaborative start-up work environment with a highly talented team Brigit is committed to providing equal employment opportunities for all applicants and employees without regard to race, religion, color, sex, pregnancy (including breast feeding and related medical conditions), national origin, citizenship status, uniform service member status, age, genetic information, disability, or any other protected status in accordance with all applicable federal, state and local laws. We are proud to be an equal opportunity workplace. If you require reasonable accommodation in completing an application, interviewing, completing any pre-employment testing, or otherwise participating in the employee selection process, please email accommodations@hellobrigit.com. Disclosures: - For information on our data privacy policies, see the Brigit California Personnel Privacy Policy. - Brigit uses E-Verify for employment authorization. See the E-Verify and Department of Justice websites for more details.
Software Engineer - Fullstack, US Remote
BrigitBrigit, also known as Bridge IT, has developed financial wellness software to “help everyday Amercians build a brighter financial future.” As an employer, t
Hi, we're Brigit! A holistic financial health company helping everyday Americans build a brighter financial future. With a business model that is aligned with our customers, we create transparent, fair, and simple financial products that put money back in the hands of our members, help them spend wisely, avoid unfair fees and build their credit quickly. If autonomy, ownership, and having meaningful input at the company you work for is important to you, come join our growing team! Brigit is doing innovative and exciting work, but don’t just take our word for it, our work is being recognized by others: - Built In's 2026 Best Midsize Companies to Work For in New York City - Built In's 2025 Best Places to Work For In New York City - Built In’s 2024 & 2025 Best Startups to Work For In the U.S. - Built In’s 2023 - 2025 Best Startups to Work For In New York City - Fast Company’s Most Innovative Companies of 2022 - Business Insider’s Most Promising Consumer Startups 2022 - Forbes Fintech 50 2022 Role Overview: Brigit is looking for fullstack engineers to help us scale our next-generation consumer finance platform to millions of users in the next year. We’ve found tremendous traction helping low income Americans make ends meet; now is the time to scale. We’ve built a mobile/web app on React and React Native with Typescript, and a backend of Java services in Google Cloud. It’s served us well so far, but we need help making it even better. Our team has two main goals: - Feature development supporting numerous external and internal applications. The next generation of our product may look nothing like it does today - and we welcome that! The degree to which we implement new user flows, compute our proprietary algorithms, integrate with 3rd party APIs, store data, and serve traffic will make or break our success. - Scalability of our customer-facing applications. Growing from 100k to 10 million users presents unique technical challenges. The efficiency and reliability of both our customer-facing and internal tools needs to improve. We have fun Data Engineering tasks, automation procedures, and availability/monitoring problems to tackle. We also have many user-facing projects, including the creation and upkeep of components and libraries, GraphQL API design, testing and QA processes, and CI/CD enhancements. Our team is small and nimble; you'll be given an extraordinary amount of autonomy and ownership. More importantly, you have a large say in the direction of the company -- both in terms of our technology and our product. Recent accomplishments of our team are: - Building a Payments API platform that moves millions of dollars on a daily basis - Implementing the advanced mathematical processes behind our proprietary risk algorithm - Normalizing relational database schema to optimize for performance for over 1 million users - Allowing users to connect their Payroll as an income source - End to end User notification (via SMS, Email, Push) capabilities - Building internal tools that enable our Customer Support Specialists to help our customers ASAP One of our greatest strengths is the speed at which we move. If you want to propose a new way of doing things, we are all ears. If you have an idea for a new feature, we'll be open to it. A new design paradigm? Bring it on. At Brigit you can enjoy a mature CI/CD platform with automated deployment processes, an easy-to-use local/staging/production development environment, and teammates willing to fill in the gaps. We automate manual things so we can focus on thinking and building something that helps people. As a fullstack engineer we’re looking for someone with experience owning a feature from start to finish on both the frontend and backend. We don’t expect everyone to know everything in our stack, but having one side of overlap (frontend/backend) that you feel very comfortable with will set you up for success here. We are ideally looking for NYC-based folks who can join us in the office 2–3 days a week. However, we're open to remote candidates! If you are applying remotely, please note that we are only considering candidates located in the EST or CT time zones who can work East Coast hours. What You'll Be Doing: - A/B testing and optimizing features that help our users and our business - Optimizing queries and relational database schema to ensure speedy response times - Implementing algorithms related to monetary transaction evaluation, risk management, income verification, and other predictive models - Integrating with new 3rd party APIs to serve millions of customers - Decreasing our customer service workload by building improvements to the product or improving our internal automations - Implementing interaction and motion design for more delightful user experiences - Automating visual testing & visual regression detection processes - Creating new mobile & web clients for upcoming products - A/B testing and optimizing features that help our users and our business What you have: - 4+ years of industry experience as a software engineer - Experience using AI tooling efficiently, familiar with best practices - Experience building REST based services and API development, ideally in Java - Experience building UI/UX for new features from end-to-end using React or React Native - GraphQL experience a plus - Up-to-date grasp of the constantly evolving JS language standards, ES6 and beyond (we use Typescript) - Experience with SQL databases, constructing schemas, performing migrations and writing analytical queries - Kubernetes, Docker or other container system experience is a plus - Quantitative skills, knowledge or experience in Finance is a plus The Interview Process - Get to Know You - 30 mins - Intro call - Come prepared to answer a few questions relevant to your experience, interests, and the role at Brigit. This helps us get to know you better and go beyond your resume or other application materials. - Technical Interview, Java, Testing and Debugging - 60 mins - Pair program with an engineer using HackerRank. This interview will be in Java and is an exercise meant to show off your fundamental coding skills. In this session, you’ll work with an engineer to test, debug, and fix a faulty data structure implementation. - Team Behavioral + Take Home Project - Team Behavioral - 60 mins - Meet with one of our Engineering Managers to discuss your approach to collaboration, communication, and alignment with our team values and culture. - Take Home Project, React - (2-4 hours total, on your own time) - You will be asked to re-create a simple game of Black Jack. This is an opportunity to showcase your process and approach for creating a working realish-world feature/product in a React environment. - Final Panel Interview - Technical Interview, System Design - 60 mins - Meet with an engineer and work through API-related business problems. - Take Home Follow-Up - 60 mins - In this interview, the team will walk through your initial Blackjack assessment with you. They’ll review the overall structure, discuss any bugs or issues they’ve identified, and work with you to add additional functionality or enhancements to the project. - Technical Interview, Service Architecture - 60 mins - Meet with one last engineer for a conversational interview around your architecture-related experience. The anticipated annual base salary for this position is $155,000 - $170,000. This range does not include any other compensation components or other benefits for which an individual may be eligible. The actual base salary offered depends on a variety of factors, which may include as applicable, the qualifications of the individual applicant for the position, years of relevant experience, specific and unique skills, level of education attained, certifications or other professional licenses held, and the location in which the applicant lives and/or from which they will be performing the job. Our Benefits & Team - Medical, dental, and vision insurance - Flexible PTO Policy - 401k plan - Paid Parental Leave - Physical and mental wellbeing benefits including Wellhub for access to virtual workouts and discounted gym memberships, and Headspace for covered virtual therapy sessions and unlimited on demand health support - Monthly reimbursements to use against wifi and cell phone bills - Annual reimbursement for Learning & Development - Help hard working Americans build a brighter financial future - High-growth company at an early stage - A dynamic, flexible and collaborative start-up work environment with a highly talented team Brigit is committed to providing equal employment opportunities for all applicants and employees without regard to race, religion, color, sex, pregnancy (including breast feeding and related medical conditions), national origin, citizenship status, uniform service member status, age, genetic information, disability, or any other protected status in accordance with all applicable federal, state and local laws. We are proud to be an equal opportunity workplace. If you require reasonable accommodation in completing an application, interviewing, completing any pre-employment testing, or otherwise participating in the employee selection process, please email accommodations@hellobrigit.com. Disclosures: - For information on our data privacy policies, see the Brigit California Personnel Privacy Policy. - Brigit uses E-Verify for employment authorization. See the E-Verify and Department of Justice websites for more details.



