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We are seeking an experienced and highly reliable Python developer to design, build, deploy, and fully document a mission-critical data ingestion service for a classified governmental traffic enforcement system. This is a turnkey project: the selected developer must deliver complete source code, full implementation on the target infrastructure, comprehensive documentation, and all materials necessary for long-term independent operation by our team. This is a production-grade, government-grade system. Zero data loss is an absolute requirement. The software must be robust, fault-tolerant, and battle-tested. Partial uploads, missed incidents, silent failures, or any form of data corruption are unacceptable. Every incident must be captured, processed, and stored with full integrity — no exceptions. Project Overview The service receives incident event data from an external traffic enforcement camera system and assembles standardized, tamper-evident evidence packages for secure storage in an AWS S3 bucket. Incident metadata and still images arrive over HTTP as JSON payloads. Related video clips are delivered separately via FTP. The system must correlate FTP video files with the correct incident, normalize all metadata into a required output JSON schema, bundle everything into a single ZIP package per incident, and upload it to S3 under a defined key structure. The service will run continuously as a background process on an AWS EC2 instance running Debian 13. Scope of Work Build a lightweight but hardened HTTP receiver in Python to accept incident JSON payloads and associated still images. Implement FTP intake to collect video clips and associate them with the correct incident using agreed-upon identifiers or naming conventions. Parse and normalize incoming metadata into a strictly defined output JSON schema. Create a ZIP archive per incident containing the normalized JSON, received images, and matched video files. Upload each ZIP package to AWS S3 using a defined object key structure. Implement comprehensive logging, error handling, retry logic, deduplication safeguards, and integrity checks to guarantee that no incident is lost, duplicated, or partially processed. Provide a production-ready deployment and configuration approach tailored for Debian 13 on EC2. Critical Reliability Requirements Given the governmental and classified nature of this project, the following are non-negotiable: the system must implement atomic or transactional upload behavior to prevent partial or corrupt packages from reaching S3; all operations must be fully logged with sufficient detail for auditing and incident reconstruction; retry logic must cover all network-level and service-level failures; the system must detect and handle duplicate deliveries gracefully; any unrecoverable failure must trigger alerts and preserve the raw input data for manual reprocessing; no data may be silently dropped under any circumstance. Technical Requirements Python 3.x. AWS S3 integration using boto3 or equivalent. FTP file intake, either standalone or integrated with an existing FTP server on the host. Runs as a persistent background service on Debian 13 using systemd. Configuration via environment variables or a structured config file. Secure handling of all credentials and network endpoints. All sensitive project details shared under NDA. Turnkey Deliverables Complete, well-structured source code with setup, configuration, and execution instructions. Full documentation covering HTTP endpoint usage, FTP intake strategy, normalization logic, and S3 upload configuration. Deployment guide and runbook for operation on EC2 Debian 13. Unit and integration tests, plus a validation plan to confirm correct end-to-end behavior before handover. Handover session and notes to ensure the operating team can maintain and extend the system independently. All intellectual property, source code, and documentation become the exclusive property of the client upon final delivery. When Applying Please include concrete examples of similar Python backend services you have built, particularly those involving AWS S3, FTP workflows, media or file packaging pipelines, and production-grade reliability. Experience building services for government, law enforcement, or other regulated environments is a strong advantage. Candidates who cannot demonstrate robust, production-tested work will not be considered.
Project ID: 40371415
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98 freelancers are bidding on average $2,439 USD for this job

With over a decade of experience in high-scale systems and Python development, I understand the critical need for a reliable data ingestion service for your governmental traffic enforcement system. My background in building solutions for high-security FinTech systems and serving over 1 million users positions me well to deliver on the zero data loss, fault-tolerant, and battle-tested requirements of your project. For strategic insight, I would recommend implementing strict retry logic for network and service failures, ensuring no incident is left unprocessed. My past success in handling complex systems, like the Telegram Mini Apps, showcases my ability to create robust and fault-tolerant solutions. I am confident in my ability to deliver a turnkey solution that meets all your requirements. Let's discuss how I can bring my expertise to your project for a successful outcome.
$4,000 USD in 45 days
7.4
7.4

Hi, This is Elias from Miami. I checked your project description and understand you need a production-grade Python ingestion service for a highly sensitive traffic enforcement workflow, where incident JSON, images, and FTP-delivered video must be correlated, normalized, packaged, and uploaded to S3 with zero data loss, full auditability, and safe recovery paths. I would approach this by designing the service as a fault-tolerant pipeline with durable local staging, idempotent processing, strict validation, atomic packaging/upload steps, and strong operational documentation so your team can run it independently on Debian EC2. I’ve worked on backend services involving Python, AWS, file/media processing, retry-safe workflows, and reliability-critical integrations where silent failure was not acceptable. I have a few questions to get a better understanding: Q1 – What is the expected matching strategy between HTTP incidents and FTP video files: a shared incident ID, filename convention, timestamp window, or a hybrid approach? Q2 – Do you already have a preferred alerting path for unrecoverable failures and audit events, such as email, SNS, CloudWatch, or another internal monitoring system? Q3 – Will the service receive the normalized JSON schema and S3 key structure upfront as fixed requirements, or should I help formalize those as part of the first implementation milestone? Looking forward to hearing from you.
$2,750 USD in 7 days
7.6
7.6

I have extensive experience building Python backend services with AWS S3 integration and FTP workflows, including production-grade reliability. I understand the critical requirements for your governmental traffic enforcement system and am confident in my ability to deliver a robust, fault-tolerant data ingestion service. Please confirm if my understanding aligns with your project needs. I am open to adjusting the budget based on a detailed discussion of the full scope. My priority is to ensure the successful completion of the project within your budget and requirements. Please review my 15-year-old profile to see my track record. Let's discuss the job details, and I am ready to start working right away to demonstrate my commitment. Looking forward to hearing from you.
$3,150 USD in 19 days
7.4
7.4

Hello, I understand you need a reliable Python service for a government traffic enforcement system that handles incident data and media files carefully to avoid any data loss. I'll build a simple but solid Python service that receives event data and images over HTTP, collects video files via FTP, ties everything together by matching incidents, and zips each incident's files into a single package. Each package will be safely uploaded to AWS S3 with full checks to avoid missing, duplicate, or corrupted data. I'll make sure it runs smoothly as a background service on Debian 13 EC2, includes detailed logging and error handling, and comes with clear setup, usage documentation, and tests to secure long-term operation by your team. Security and fault tolerance will be priorities throughout. Important questions: What specific naming conventions or identifiers will be used to link the FTP video files to the incident JSON? Can you provide the exact JSON schema for the normalized incident metadata? Are there preferred libraries or frameworks for logging, retries, or system monitoring you want to use? Do you require encryption or special security considerations for the data during ingestion and storage? What level of alerting or monitoring do you expect on failure or duplicate detection? What specific naming conventions or identifiers are used to link the FTP video files to the incident JSON payloads? Thanks,
$5,000 USD in 26 days
7.1
7.1

Hi there, I’ve read your turnkey Python ingestion system spec for a government-grade traffic enforcement workflow and I’m confident I can deliver a robust, auditable, and fully documented solution that meets the zero data loss requirement. I bring deep experience building production-grade data pipelines, secure AWS integrations, and dependable service architectures that run on Debian EC2 with systemd, featuring strong fault tolerance and end-to-end integrity. What I’ll deliver: a hardened HTTP receiver for incident JSON and images, FTP ingestion for video clips, precise metadata normalization into a strict output schema, per-incident ZIP packaging (JSON, images, and video), and atomic uploads to S3 with deterministic keys. The solution will include idempotent processing, comprehensive logs, retry and deduplication logic, and an auditable runbook for on-call operations. Deployment scripts and a complete runbook will enable your team to operate autonomously on Debian 13. I’ve shared an initial estimate based on your description, and once we go over a few technical or functional details, I’ll confirm the exact cost and delivery schedule. What are the exact AWS S3 bucket naming conventions and the authoritative incident identifiers that must be used to link FTP video files with their corresponding JSON payloads, and are there any regulatory logging requirements beyond standard audit trails to account for in the runbook? Asad
$3,055 USD in 1 day
7.0
7.0

HELLO!! I have carefully reviewed your requirements for the Python-based mission-critical data ingestion and evidence packaging system for governmental traffic enforcement. I clearly understand the importance of zero data loss, atomic processing, secure handling, and production-grade reliability with full auditability. I have more than 10+ years of experience in backend engineering and building highly reliable data processing systems using Python, AWS (S3, EC2), event-driven architectures, file ingestion pipelines, and secure system design. I have worked on similar production-grade systems involving large-scale data ingestion, media processing pipelines, and fault-tolerant cloud deployments. My approach will be to design a robust ingestion architecture with a hardened Python HTTP receiver for JSON payloads, FTP-based video ingestion with reliable correlation logic, and a strict validation + normalization layer to enforce schema integrity. Each incident will be processed using an atomic pipeline that builds a complete evidence package (JSON + images + video), generates a tamper-evident ZIP archive, and uploads it to AWS S3 with retry-safe, idempotent operations. I WILL PROVIDE 2 YEAR FREE ONGING SUPPORT AND COMPLETE SOURC CODE, WE WILL WORK WITH AGILE METHODOLOGY AND WILL GIVE YOU ASSISTANCE FROM ARCHITECTURE DESIGN TO DEPLOYMENT, TESTING AND HANDOVER DOCUMENTATION. I eagerly await your positive response. Thanks.
$500 USD in 7 days
6.9
6.9

With over a decade of expertise in full-stack Python development and a special focus on AWS integration, my team and I at Agentic AI are perfectly equipped to deliver your turnkey Python Ingestion Service. We not only understand the unique technical requirements of your project but also the critical reliability demands it comes with as a governmental and classified system: zero data loss, comprehensive logging, failover management, and duplicate delivery handling - we have you covered on all fronts. Our robust system designs have been implemented across diverse verticals including healthcare, finance, and government sectors. What truly sets us apart is our ability to make AI systems fully operational and productive. We don't just deliver prototypes; we design fully functional systems that work within your existing infrastructure. From LLM integrations to RAG pipelines, our experiences on similar projects will help us understanding critical customer requirements thereby ensuring that no data is silently dropped under any circumstance and critical incidents are handled as per your needs.
$5,750 USD in 17 days
6.5
6.5

I build ingestion systems where failure is not an option—your traffic evidence pipeline will be designed for zero silent loss, full traceability, and clean handoff to your team. I’m a strong fit for this project because I’ve delivered production Python services on Linux/AWS that handle unreliable inputs, strict validation, retries, deduplication, and durable storage. For a government-grade workflow like this, I’d focus on atomic processing, raw-data preservation, and audit-ready logging from day one. Key strengths: - Hardened Python service design for continuous EC2 operation on Debian 13 - Reliable ingestion patterns: idempotency, checksum/integrity checks, retry queues, and failure isolation - AWS delivery: S3 upload flow, packaging, deployment, monitoring, and documentation for independent operation Relevant experience includes building backend services that ingest external data feeds, correlate multi-source assets, and produce immutable artifacts with operational runbooks and deployment docs. My approach: define the exact incident/video matching rules, implement HTTP + FTP intake with persistent staging, normalize to your schema, create tamper-evident ZIP packages, upload safely to S3 only after validation, and provide full deployment, logging, alerting, and reprocessing procedures. If you’d like, I can outline the architecture and milestone plan for your review.
$2,750 USD in 21 days
6.6
6.6

Hi I have strong experience building production-grade Python services for file ingestion, media correlation, S3 packaging, and hardened AWS deployments. And I can help you deliver this as a turnkey Debian 13 service focused on reliability, auditability, and zero-silent-failure processing. The key technical challenge here is safely correlating asynchronous HTTP incident payloads and FTP video deliveries, then promoting only complete, validated evidence packages to S3. I would solve that with persistent local spooling, idempotent incident tracking, checksum validation, retryable workers, atomic ZIP finalization, and strict audit logging so no incident is dropped or partially uploaded. I’m comfortable implementing the HTTP receiver, FTP intake, normalization layer, S3 upload pipeline, systemd service, alerting hooks, and full operational documentation for independent handover. My approach is centered on explicit failure states, duplicate protection, raw-input preservation for reprocessing, and deterministic packaging for regulated environments. You’d be getting a senior Python backend developer focused on hardening and production readiness rather than a fragile prototype. Thanks, Hercules
$3,000 USD in 7 days
6.5
6.5

Hi, I understand this is a mission-critical ingestion service where zero data loss, strict integrity, and full auditability are non-negotiable. I will design a fault-tolerant Python service that reliably ingests HTTP and FTP inputs, correlates incidents, normalizes metadata, and produces tamper-evident evidence packages with strict validation and tracking at every step. I’ll build a hardened HTTP receiver and FTP intake pipeline, implement id-based correlation, transactional ZIP packaging, and atomic S3 uploads using boto3 with retry, deduplication, and checksum verification. The service will run via systemd on Debian EC2 with structured logging, alerting on failures, and safe data persistence for reprocessing. You’ll receive complete source code, full deployment and runbook documentation, tested pipelines, and a clear handover so your team can operate independently with confidence. Ready to start right away. Usman Bashir
$2,000 USD in 7 days
6.5
6.5

Hi there, I’m offering 25% off for this project while delivering a production-grade Python ingestion service built for zero data loss, auditability, and long-term operational stability. I’ve built backend systems involving Python services, S3 pipelines, FTP/HTTP intake, structured packaging, retry-safe processing, and deployment on Linux servers where reliability and traceability were critical. For this project, I’d design a hardened service that receives incident payloads, correlates media accurately, normalizes metadata into the required schema, creates tamper-evident ZIP packages, and uploads them to S3 with strict integrity checks, deduplication, and failure recovery controls. My focus would be on atomic processing, raw-data preservation, full audit logging, retry logic, alerting, and clean systemd-based deployment on Debian/EC2 so no incident is silently lost or partially processed. I’ll also provide complete documentation, tests, deployment notes, and handover material so your team can operate it independently with confidence. Regards, Sohail Jamil
$500 USD in 7 days
6.2
6.2

Your FTP-to-S3 pipeline will fail silently if the video file arrives before the HTTP metadata payload. Without a state machine to track partial incidents, you'll either upload incomplete packages or lose evidence entirely - both unacceptable for a classified enforcement system. Before architecting the solution, I need clarity on two failure scenarios: What happens if the FTP server receives a video file but the corresponding HTTP incident payload never arrives within 24 hours? Do you need a dead-letter queue for orphaned files, or should the system alert and preserve raw data for manual review? What's your S3 versioning policy if a duplicate incident ID arrives with different metadata - do you overwrite, reject, or create a conflict record for audit purposes? Here's the architectural approach: - PYTHON + BOTO3: Build an event-driven state machine using SQLite to track incident lifecycle (metadata received → video matched → package assembled → S3 uploaded). Each state transition is atomic with rollback capability to prevent partial uploads. - AWS S3 + MULTIPART UPLOAD: Implement checksummed multipart uploads with pre-flight validation. If any chunk fails, the entire package is rolled back and queued for retry with exponential backoff. - LINUX SYSTEMD + WATCHDOG: Deploy as a systemd service with automatic restart on crash and watchdog timer to detect hung processes. All logs route to journald with structured JSON for audit trail reconstruction. - FTP INTAKE + INOTIFY: Use pyinotify to trigger processing immediately when video files land, eliminating polling delays. Implement file locking to prevent processing incomplete uploads. - DEDUPLICATION + IDEMPOTENCY: Generate SHA-256 hashes of incoming payloads and check against DynamoDB or local cache before processing. Duplicate incidents are logged but not reprocessed. I've built similar zero-loss ingestion pipelines for three federal contractors handling CJIS-compliant data. I don't take on projects where failure modes aren't mapped upfront. Let's schedule a 20-minute technical call to walk through edge cases - network partitions, out-of-order delivery, and S3 eventual consistency - before I commit to the build.
$2,480 USD in 30 days
5.7
5.7

I can build a fault-tolerant Python ingestion service on EC2 that securely correlates HTTP/FTP data, creates atomic ZIP evidence packages, and uploads to S3 with zero-loss guarantees, full logging, retries, and deduplication. I’ve delivered production-grade pipelines with AWS, ensuring auditability and reliability under strict requirements. Let’s discuss your schema and infra for a solid rollout.
$2,050 USD in 1 day
5.1
5.1

Hello, I understand the critical nature of developing a robust Python data ingestion service for a classified governmental traffic enforcement system. The project requires a turnkey solution that ensures zero data loss, fault tolerance, and secure data processing. My approach involves building a hardened HTTP receiver in Python to handle incident JSON payloads and associated images, integrating FTP intake for video clips, and implementing strict metadata normalization to generate standardized output. The service will run continuously on an AWS EC2 instance with comprehensive logging, error handling, and integrity checks to guarantee data integrity. My experience in developing production-grade Python backend services, including AWS S3 integration, FTP workflows, and reliability-focused systems, aligns well with the requirements of this project. I have a proven track record of delivering secure and efficient solutions for regulated environments, ensuring data integrity and operational excellence. I am ready to discuss further details and clarify the scope to deliver a high-quality, turnkey solution tailored to your specific needs. Best regards, Justin
$2,800 USD in 7 days
4.8
4.8

Hi, I understand this is a mission critical system where zero data loss is a must, and that’s exactly how I build backend services, reliable, traceable, and no silent failures. I would set up a clean flow where HTTP and FTP data are correctly matched, validated, and packaged into a single ZIP per incident. Every step will include logging, retry logic, and checks to make sure nothing is missed, duplicated, or partially processed, and uploads to AWS S3 are always safe and complete. I’ve worked on similar backend systems with APIs, file handling, and cloud storage where stability really matters. My focus is always on making sure the system runs smoothly, handles edge cases, and can be trusted in real use. You’ll get a production ready service on EC2 (Debian) with clean code, proper documentation, and everything your team needs to run it independently. Happy to get started. Regards, Ali Zain
$4,000 USD in 7 days
4.8
4.8

Hello, I hope you are well. I’m an experienced Python developer focusing on robust, production-grade data pipelines. I design services with clear documentation, solid observability, and fault tolerance, tailored for mission-critical environments. I’ll build a lean, hardened ingestion service that receipts incident JSON and images over HTTP, collects and matches FTP video, normalizes metadata to a strict schema, bundles everything into a single ZIP per incident, and uploads it to S3 with an auditable, atomic workflow. I’ll implement thorough logging, deduplication, retries, and integrity checks so no incident is lost or corrupted, and provide Debian 13-oriented deployment and runbooks for long-term operation. I can deliver a complete turnkey solution: source code, deployment scripts, configuration, tests, documentation, and a handover session. This includes an end-to-end validation plan and a reproducible AWS setup. I’ll assume a 100% reliable Dell-grade approach for production and include security-conscious handling of credentials and endpoints. Best regards, Billy Bryan
$3,055 USD in 1 day
4.3
4.3

Hi, I’m Mughira, and I can help you design and build this mission-critical Python ingestion service with strong focus on reliability, data integrity, and fault tolerance. I’ve worked on similar production backend systems involving file ingestion pipelines, AWS S3 storage workflows, and secure data processing services where consistency and zero data loss were critical requirements. I can develop a hardened Python service on Debian 13 that handles HTTP ingestion, FTP-based media intake, metadata normalization, and secure packaging of each incident into atomic, tamper-evident ZIP archives before uploading to S3. The system will include robust retry logic, deduplication, full audit logging, and recovery mechanisms to ensure no incident is ever lost or partially processed. The solution will be fully documented, production-ready, and deployed as a systemd-managed service with secure configuration handling and clear operational runbooks for your team. I’m available to start immediately. Let me know a good time for a short meeting.
$2,750 USD in 7 days
4.3
4.3

Hey, your project, Python Ingestion Service for Governmental Traffic project looks like a great fit for my skills. I've worked on similar Python projects and can deliver solid results. Let me know if you'd like to chat about the approach.
$500 USD in 7 days
3.8
3.8

Hello, I’ve read the requirements and understand this must be a turnkey, government-grade Python ingestion service with absolute zero data loss. I build hardened, auditable backend services and will deliver a production-ready HTTP receiver, FTP intake, deterministic matching logic, strict metadata normalization, per-incident ZIP packaging, atomic S3 uploads, and full systemd deployment on Debian 13. I’ll design durable deduplication, end-to-end integrity checks (checksums, signatures), comprehensive retry and backoff strategies, durable dead-letter preservation for raw inputs, and rich logging for full audit reconstruction. I’ll provide complete source, deployment playbooks, unit/integration tests, and a runbook plus a handover session. Can you share the exact output JSON schema, expected S3 key format, and the naming convention or identifier that links FTP videos to incident payloads? Sincerely, Daniel
$3,055 USD in 1 day
3.9
3.9

Greetings! I looked at your classified governmental data ingestion service project. You need a Python service that receives incident JSON and still images over HTTP, correlates with FTP video files, normalizes metadata, creates ZIP packages, and uploads to S3 — with zero data loss, retry logic, deduplication, and full logging. I provide Python backend development services. I will build a hardened HTTP receiver, FTP intake, atomic uploads, systemd service for Debian 13, complete documentation, and handover session. All IP transferred. Send me your NDA and API specifications. Thanks, Revival
$500 USD in 15 days
3.8
3.8

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