Linux Jobs

The application is finished—both the TypeScript / frontend and the underlying machine-learning models are production-ready. I now need help pushing everything live and wiring in a Razorpay checkout so users can begin paying immediately. Here’s what I’m looking for: • A clean deployment pipeline for the existing codebase and the separate ML services. You’re free to suggest the most sensible hosting (Vercel, AWS, custom Docker on a VPS—whatever best fits quick rollouts and model inference at scale). • Full Razorpay integration: secure client-side payment collection, server-side verification, and webhooks so orders are recorded only after payment success. Test and demonstrate this flow in both sandbox and live modes. • Environment configurati...

My family of six needs Tirumala Tirupati Darshan tickets during the next quota release and I want every technical edge we can legally gain. In past releases I opened the TTD website and Android app on several phones, tablets and desktops at the exact launch minute, yet the slots froze almost instantly. I have since arranged two independent broadband lines plus a 5G hotspot, but I clearly need deeper expertise. Here is the help I’m after: • Network-side tweaks – routing choices, DNS, latency-cutting tricks or parallel connection tactics that shave even a few milliseconds. • Browser and device optimisation – pre-loading, profile isolation, extension selection and any console or developer-tools settings that speed first meaningful paint on the TTD portal across sm...

I need a clean Postfix installation configured to handle both outgoing and incoming mail. All account, alias, and domain information must live in PostgreSQL, so the build has to include the proper SQL maps and permissions from the start. My goals are straightforward: – Mail flows reliably in both directions. – TLS is enforced for all SMTP traffic. – Users authenticate against the PostgreSQL-backed tables. – Standard anti-spam and DKIM/SPF records are in place so messages land in the inbox, not junk. You are free to choose the Linux distribution you’re most comfortable with, but please document every package, file path, and command so I can replicate the setup later if needed. Once the server passes basic send/receive, DKIM/SPF, and relay-restriction tests, t...

I already run a WordPress site where municipalities log in to draft their text alerts. Now I need the back-end engine that will actually move those messages from WordPress through playSMS and out via a Dinstar GSM gateway. The core of the job is the integration with Dinstar and playSMS. You will expose a clean REST API (Python with Flask or FastAPI on Linux) that my WordPress plugin can call, pass the message payload to playSMS, and relay it to the gateway. From the same API I also want delivery reports and status updates pushed back to WordPress, preferably through webhooks so the site can show live progress bars for each campaign. Day-to-day workflow I envision • Municipal clerk logs in on WordPress and writes a message. • Message is queued for my approval, scheduled, and...

The current Python codebase throws errors and stalls progress on a project that should already be live. I’ll share a private Git repository as soon as we start; your first task is to comb through the modules, isolate the faulty routines, and get every test to pass locally. Once the application is stable, I need it running in my AWS account with a small-footprint, maintainable setup—EC2, Elastic Beanstalk, or even Lambda/Container Services if that proves more sensible. Deliverables • Clean, working Python source pushed to the repo • Proven test results or a lightweight test suite showing the fixes hold • Deployed, live instance in AWS with basic monitoring enabled • Short hand-over guide so I can reproduce or roll back the deployment on my own I...

I have a freshly provisioned VPS and a domain already pointing to it. I just purchased a web-application script from CodeCanyon that runs on a standard MEAN stack. During an AnyDesk session on my machine I will share SSH root access; every command must be executed in that live session. Your task is to: • Install the latest stable releases of Node.js, npm, MongoDB, and any other dependencies referenced in the script’s documentation • Upload or pull the CodeCanyon package, configure environment variables, and run any build or seed commands • Set up a process manager (e.g., PM2) so the app starts on boot and can be restarted easily • Configure a reverse-proxy (Nginx or Apache) and secure the domain with a Let’s Encrypt SSL certificate • Hand over...

We are bypassing slow corporate agency partners to hire an independent, professional-grade MTA DevOps / Deliverability Engineer to own the production-ready bare-metal/VDS deployment, enterprise software licensing procurement, core installation, and advanced telemetry integration for our foundational seed node (VDS-Node-01). This is an all-in-one, unified single-node deployment model. You will build and stabilize the entire execution stack on an isolated VDS instance backed by an Intel Xeon Platinum core array (4 vCores, 8 GB RAM, 80 GB NVMe Storage) running a minimal server image of Ubuntu 22.04 LTS provided via our network partner, Hostarox. Explicit Scope of Work (SOW) & Key Deliverables: 1. Software Procurement, Licensing & Unified Installation MailWizz EMA Build: Clean direc...

I need a substation gateway configured so it can issue real-time set-points for both voltage and power-factor on a fleet of SMA PV inverters. All messaging must follow the NIE-SSG SCADA technical guidelines and be carried over Modbus (TCP preferred, RTU acceptable if justified). The task is purely about control: the gateway has to accept the grid operator’s Volt/Var and PF commands, translate them into the exact SMA register map, push them to each inverter, and confirm execution with the correct feedback flags. My expectation is a turnkey configuration package that I can load into the existing gateway (Linux-based, supports DNP3 and Modbus out of the box). It should include: • Gateway configuration files or scripts • Register map and scaling document aligned with N...

We operate a portfolio of five high-traffic real estate websites and need to evaluate and execute a migration from Imperva App Protect Professional to Cloudflare. We used Cloudflare Pro successfully for 10+ years before bot-driven performance issues pushed us to Imperva. Imperva's Core tier didn't resolve the issues; the upgrade to App Protect Professional stabilized our servers. We're now evaluating a return to Cloudflare for cost and operational reasons. This engagement is framed in two phases: Phase 1 — Evaluation (paid, fixed fee): Determine whether Cloudflare can credibly match our current Imperva protection for our specific traffic profile, and at what plan tier. If the honest answer is "no" or "only at Enterprise + Bot Management at $X," we ...

I’m building a smart monitoring solution around ultrasonic flow sensors installed in pressurised water pipes. The software has to do three things at once: recognise leaks the moment they start, forecast failures before they happen, and turn raw readings into clear, actionable analytics. The data stream comes directly from ultrasonic sensors pushing wave-form and flow information. I’m flexible on whether your model runs on the edge (microcontroller, Raspberry Pi, gateway) or in the cloud, provided total latency stays under a few seconds. Language-wise, Python or C++ makes the most sense to integrate with TensorFlow Lite, PyTorch, or a comparable framework, and the service should talk to our existing SCADA stack via MQTT or HTTP. Because our field laptops and servers are a mix, ...

Job Title: Freelancer Needed – Spring Boot 3.5 → 4.0 Migration + AWS CDK (TypeScript) Job Description: We are looking for an experienced freelance developer to support an existing application modernization effort involving: Migration of a backend application from Spring Boot 3.5 to Spring Boot 4.0 AWS infrastructure development and updates using AWS CDK with TypeScript Identifying and resolving compatibility issues, deprecated APIs, and dependency updates Ensuring application stability, performance, and successful deployment after migration Responsibilities: Analyze existing Spring Boot application and plan migration to Spring Boot 4.0 Upgrade project dependencies and resolve breaking changes Refactor code where needed to support Spring Boot 4.0 compatibility Review and update A...

I need a seasoned security specialist to put my entire email stack under the microscope. The first milestone is a full-scale email infrastructure security test: enumerate every open port, probe each mail-related service, and confirm that no misconfiguration or outdated component could be abused. Once that foundation is proven solid, we will pivot to SMTP server tuning and deliverability enhancements, followed by a light penetration test to validate the fixes. Your report should cover exploitation paths you attempted, evidence of any vulnerabilities, and clear, actionable remediation steps. Please outline in your proposal the methodology you intend to follow, the toolset you prefer (e.g., nmap, Nessus, Metasploit, OpenSSL, Postfix/Exim diagnostics, or similar), and the format of the findin...

I have an existing Node.js + Venom Bot + n8n workflow that forwards messages from selected WhatsApp groups to Telegram channels. I need a developer to review and fix the current setup, including group routing, Telegram channel mapping, media/file forwarding, webhook security, error handling, and long-running server deployment. Current flow: WhatsApp Group → Node.js Venom Bot → n8n Webhook → Telegram Channel The bot should correctly forward text, images, videos, audio, voice notes, and documents to the correct Telegram channels.

Job support : Senior AWS Security Engineer (Cloud + Linux + Automation) We are looking for a highly skilled AWS Security Engineer with strong hands-on experience in cloud security, Linux troubleshooting, and Python automation scripting. Required Skills:- • 3+ years of AWS Cloud Security experience • Strong hands-on experience with CloudTrail & GuardDuty • Linux/Unix troubleshooting and administration • Python scripting from scratch for automation • IAM Policies & Trust Policies understanding • AWS Organizations, SCPs, SSO, Security Controls • Experience with WAF, Shield, IDS/IPS, EDR, DLP • Incident Response & Vulnerability Management Nice to Have • AWS Certified Security Specialty • Experience with MSSP/vendor managemen...

I need to stand up a production-grade Red Hat OpenShift Virtualization cluster in our on-prem data-centre as soon as possible. The work begins with high-level design and ends only when the platform is fully installed, configured, documented, and accepted by my operations team. Key elements of the engagement • Architecture & sizing aligned with best-practice and our existing server estate. • Automated installation using Ansible, with playbooks handed over and fully commented. • Registration and lifecycle management through Red Hat Satellite so patching remains simple. • Core services—DNS, NTP and Syslog—either freshly deployed or cleanly integrated with the current equivalents so all nodes resolve, time-sync and forward logs without error. &bul...

I need a complete cloud-based environment built on Amazon Web Services. The core of the job is to provision and configure the compute layer—primarily EC2 instances and serverless functions on AWS Lambda—so that my application can scale reliably and remain cost-efficient. Scope of work • Design the overall architecture: network layout (VPC, subnets, security groups), IAM roles/policies, and routing that follows AWS best practices. • Spin up and harden EC2 instances, setting up OS, packages, and automated patching. • Create and deploy Lambda functions behind an API Gateway where serverless execution makes sense. • Implement monitoring and logging through CloudWatch so I can track performance and receive alerts. • Provide concise runbooks or Terraform/Clo...

My Microsoft 365 mailboxes suddenly refuse to send from Outlook—even simple test messages sit in the Outbox forever. Diagnostic headers point to SPF and DKIM alignment problems. The domain’s DNS lives entirely on GoDaddy and I have not touched the zone files in months, nor do I route mail through any third-party service. I need a Microsoft 365-savvy admin who can: • Review the current TXT, MX, and CNAME records on GoDaddy • Generate and publish the correct SPF, DKIM (and if advisable, DMARC) entries • Verify propagation, run live tests, and confirm mail leaves the tenant without errors or rejections Success is when I can hit “Send” in Outlook and the message delivers immediately to an external Gmail test account—no stalls, no NDRs, and n...

I need an experienced Minecraft server builder to create a Survival server with specific mods/plugins. Requirements: - Set up a Survival Minecraft server - Install Economy plugin - Install Donut SMP mod pack - Ensure server is stable and secure Ideal Skills: - Proficient in Minecraft server setup - Experience with mods/plugins installation - Knowledge of server security and stability Please provide your expertise and relevant experience in your bids.

-I have a brand-new virtual environment waiting for Avaya Aura 10.2 and I need an expert to take it from zero to fully operational. -I have a server with ESXi 8.0 -Install and integrate all the Avaya aura solution without license just the trial version. -Include Avaya system manager, Avaya session manager, Avaya communication manager, and the creation of 20 SIP devices, enable features like; transfer, call park, conference. Test of calls between the devices.

I am looking for an experienced PKI engineer to design and implement a new on-premises PKI system for an active client engagement. This is a solo delivery role — one resource owns the full scope from discovery through handoff. The engagement includes: Designing and implementing the full PKI architecture including CA hierarchy, RA, and trust model selection Configuring CA, RA, and CRL components Integrating ACME protocol for automated certificate management Implementing certificate lifecycle management — issuance, renewal, revocation, and expiration alerting Automating certificate workflows using Python, PowerShell, or Bash Producing client-grade documentation including architecture diagrams, runbooks, and a project closeout report Delivering a knowledge transfer session so the...