Hire Top Freelance Security software Developers

Robert Dyke

Robert has over 20 years’ experience in software development. Previously worked on secure applications at world renowned nCipher and Thales e-Security (part of Entrust Datacard). Rob has worked with Visa International, Microsoft, CIA, all major British banks, and British Government creating, mentoring and training on world changing products. Robert holds senior leadership roles, developing world class market disruptive security technologies. As one of the best cryptography and cybersecurity specialists within Fintech, he is also CISSP and Certified Ethical Hacker. Robert holds a Bachelors' degree in Computer Science from Sussex University – one of the best universities in Europe.

Sourav Paul

Sourav is a Senior Software Developer at IBM Research Lab. He is working as a Full-Stack Developer in building highly scalable, resilient distributed systems. Sourav will help you with to prepare coding interviews, System Design for FAANG and other top product companies Have been passionately solving Leetcode, HackerRank, Codechef, Codeforces, Codesignal problems, and enthusiastically solving problems with the analysis of space... ♛ Career Domain - ▪️ Data structures & algorithms. ▪️ Large-scale distributed systems(HLD/LLD). ▪️ E2E Backend system architecture(API Gateways/LB/Cache/DB/Messaging Queues/Microservices). ▪️ REST APIs/Data Streams/Batch Jobs/Event-driven systems. ▪️ Java/Rx/SpringBoot/Hibernate/MySQL/Cassandra/Docker/Kubernetes/CICD/Git/Cloud. ▪️ Software engineering mentorship to the freshers/experienced professionals. ♛ Key Responsibilities - ▪️ Building scalable quality software solutions by designing, writing code, and unit tests through consistent development practices with a focus on continuous integration/continuous deployment, continuous monitoring, and automated testing(TTD/BDD). ▪️ Debugging software components, identifying code defects, and remediating the buggy flow. ▪️ Participating in code reviews and collaborating on best practices with colleagues. ▪️ Enabling the deployment, support, and monitoring of software across test, integration, and production environments. ▪️ Identifying opportunities for adopting new technologies. ▪️ Demonstrating increased self-reliance to achieve team goals. Influencing team members with creative changes and improvements by challenging the status quo and demonstrating risk-taking. ▪️ Effectively interpreting technical & business objectives, functional/non-functional requirements, involved challenges, and articulating solutions. ▪️ Collaborating with a team of Engineers, Scrum Master, and Product Owner to effectively achieve objectives by clearly communicating ideas and concepts. ▪️ Mentoring and guiding junior team members to success within the team. ▪️ Interviewing college grads/senior engineers as part of global hiring events across the org. ```Feel free to reach out for anything related to,``` ▪️ Software Design/Development/Prototyping/Pair coding. ▪️ Web Technologies/API design/Code reviews. ▪️ Career development/Consulting/Training/Mentorship/Interviews in technology/DSA/System Design. ▪️ Business Idea and its transformation into technology.

Doug Gale

Started programming at age 12 in 1988 on a Commodore VIC-20. Extremely adept at debugging of all kinds, performance optimization, databases, embedded systems, operating systems, networking, testing and automation across a wide variety of languages, APIs and frameworks, high level as React/Typescript and as low level as knowing several CPUs assembly languages and designing microcontroller PCBs. It is way too much to just enumerate. Formerly worked at Microsoft in Windows Protocols and Engines team.

Naresh Reddy N

Over 13 years of web application development experience. Expertise in leading high-performing software engineering teams. Skilled in backend, data engineering, micro-services, and Big Data technologies. Technical Skills: Programming languages, frameworks, cloud platforms, DevOps tools, databases, Big Data technologies, microservices architecture, CI/CD, performance monitoring, security. Soft Skills: Leadership, communication, problem-solving, decision-making, collaboration, mentoring, adaptability, project management.

Yad Konrad

I'm an applied researcher in machine learning and founder of a research institute where I teach related subjects to ML and build heavy ML powered products. chronological: Applied research endeavors have been around natural language processing and reinforcement learning. I have worked as head of machine learning at several startups with consumer facing products. Background in computer science with concentration in web and networking. Previously, I have built a online school and streaming service such as DraperTV, I have contributed to a dozen of python packages and ruby gems. I like working with teams that have diverse set of skills. Harder challenges are usually starting point for learning something new, which gets me excited about all sorts of topics to build or teach on.

Willem Van Onsem

Developer by day, programmer by night. I obtained a master of science in civil engineering (computer science) and participated - together with several teams - in programming contests and hackathlons. I answer questions on StackOverflow on a daily basis and wrote courses on Artificial Intelligence and Digital Electronics. I am mainly interested in Haskell, Python, and Prolog. I worked as a researcher in the field of hyperheuristics (artificial intelligence), a teaching assistant in computer science and as a data scientist and technical lead developer in an AI startup. During my spare time I developed small (and larger) projects to help with daily routine. For me, a computer should aim to automate everything that is boring, such that one can pay more attention to what is interesting in life. After each session, I aim to write a document (usually within one week) that describes what we discussed. The public GPG key can be found here: https://pgp.mit.edu/pks/lookup?op=vindex&search=0x6A148004A6024E2B Usually available between 17:30 - 21:30 UTC (Monday to Friday) and 9:30 - 21:30 UTC (weekend). See for time conversions https://goo.gl/eWdDCG (week days) and https://goo.gl/kdvMsa (weekends).

PRADEEP CHOUDHARY

Having 8 years of experience in backend application development using Java technologies.

K M Rakibul Islam

Freelance Security software Developer5.0 (2545 reviews)

Experienced (18+ years) developer and friendly Ruby on Rails and React/Next.js/Redux Developer/Mentor (with passion for helping others learn) | ★ 3,645+ 5 ★ sessions/jobs. 9+ years on top of the Codementor Ranking ★ https://www.codementor.io/ruby-on-rails-experts I am a Senior Software Engineer from Toronto, currently working as a Ruby on Rails and React/Redux Developer at theScore Inc. I am passionate about helping and mentoring people, especially those who are new to web development and the programming world. I am specialized in explaining the core concepts of Ruby and Rails, Javascript, React, APIs and everything else along with the best practices. I focus on the learning experience of my students and make sure they get exactly what they want. I have excellent academic track records (Bachelor of Science in Computer Science and Masters in Computer Engineering from the University of Toronto) along with strong development and industry experience in Software Development and Web Development (18+ years coding experience in total). I have helped more than 800 individuals here at CodeMentor (with 3,645+ 5 ★ sessions) with their projects implementation, bug fixes, architecture advices, performance improvements etc. I have worked with a bunch of CEOs and CTOs of YC start-ups and helped them with their projects. Made long term relationships with many of them which I help in a regular basis today. I have helped a ton of bootcamp students here at CodeMentor and helped them build their web development career path and getting jobs after the completion of their bootcamp cohorts. Here at CodeMentor, I have helped people from all levels: From someone who is brand new to programming to 30+ years of experienced Senior Software Engineers, Product Managers and everyone in between. It's been an amazing journey here at CodeMentor for the last 8+ years! :-) I started programming and solving problems in 2006, at the age of 18. Since then, I wrote programs in a variety of programming languages such as C, C++, Java, PHP, Ruby, Python, Javascript, etc. These days, I use Ruby and Rails and React JS as my primary programming languages and frameworks. I can help with debugging your issues as well as refactoring your code according to the best practices and conventions out there. Helping people is my passion and motto in life. If you think I can help you in any way, please get in touch! Specialties: * Building scalable and performant backend APIs in Ruby on Rails (Active Model Serializer, GraphQL, Grape, Jbuilder, RABL, etc.) for android, iPhone or web applications. (For more than 12 million users). * Integration of backend APIs with Javascript frontend framework (ReactJS) using JSON Web Token (JWT). * Built highly scalable Push Notification System for theScore sports application (For ~10 million users). * Implemented instant player, team and news article search for the theScore and theScore eSports apps which have more than 6 million monthly active users using ElasticSearch and Rails. * Backend Ruby on Rails Development (With scaling, performance optimizations, database query optimizations, caching best practices, etc.). * Test Driven Development with clean code and best practices. * Web Scraping (Nokogiri, Mechanize) (Scrape data from anywhere on the internet!). * Reverse engineering complex APIs and web applications to write automated scripts to mimic and automate user behaviour and extract required data. * Explain concepts/solutions clearly and concisely according to the level of the client/student. (Helped over 800 people on CodeMentor with 3,645+ 5 ★ sessions) * Giving architecture advice for your application. Explain which tools/gems to use and why. * Setting up SSL certificates for Rails application (Nginx server) on AWS EC2 instance and securing your application. * Suggesting best practices and focusing on the best learning experience and long-term achievements. * Showing cool tips and tricks that I have learned over the past 18+ years (and still learning!) as a professional Ruby on Rails developer to be more productive and efficient at work. * Upgrading Ruby/Rails versions for your existing application. * Finding bottlenecks and Optimizing performance for your slow Rails applications. * I can help you to prepare for interviews for Ruby on Rails developer position, or any other Software Development position. I have successfully guided many developers who got their dream jobs after practicing coding interviews with me!

Johnny B. (Ionică Bizău)

Freelance Security software Developer5.0 (1740 reviews)

Hey! I am Johnny B. 🙏 (Actually, my Romanian friends call me Ionică, which in English is basically: Johnny). ...and I 💖 emojis! I started coding around 2010, starting with simple static websites, WordPress applications, and then tried Node.js for the first name around 2012. Since then, I have been working with Node.js. I like it a lot. Currently, I do the best in: ★ Node.js 🚀 ​ ​ ☆ Command line tools ​ ​ ☆ Express.js ​ ​ ☆ Passport ​ ​ ☆ Raw/minimal code, without frameworks (e.g. simple HTTP server) ​ ​ ☆ Using npm ​ ​ ☆ Creating npm packages for Node.js (and for the front-end as well) ​ ​ ☆ Scraping the web ​ ​ ☆ Automation of repetitive tasks ​ ​ ☆ Image processing ★ JavaScript ✨ ​ ​ ☆ Creating and importing libraries ​ ​ ☆ jQuery (creating plugins, using them etc) ​ ​ ☆ Scraping ​ ​ ☆ Automation of repetitive tasks ​ ​ ☆ Publishing npm packages ​ ​ ☆ SVG (SVG.js, d3.js) ★ HTML & CSS 🎨 ​ ​ ☆ Fixing CSS quick issues ​ ​ ☆ Implementing mockups ​ ​ ☆ Making the page responsive ​ ​ ☆ SEO tips & tricks ★ Command line 💻 ​ ​ ☆ Shortcut tips ​ ​ ☆ Creating command line tools ​ ​ ☆ Using VIM & Tmux ★ Code Review 👀 ​ ​ ☆ I do code review offline, for Node.js, JavaScript, eventually CSS. ​ ​ ☆ Can be done in a live session as well. ​ ​ ☆ Security checks ​ ​ ☆ I point things that can be done in a better way ★ Using Git & GitHub/GitLab/BitBucket etc. 😸 ​ ​ ☆ Introduction to how Git works ​ ​ ☆ Using Git hosting services (e.g. GitHub, GitLab, BitBucket etc) ​ ​ ☆ Top Git commands ​ ​ ☆ Shortcuts If I can help, I will definitely do it, as long your app is not promoting things that tend to be potentially immoral. For example, I'm happy to help you build an e-shop, but I will probably not build an e-shop designed specifically for selling wine since I am against the use of alcohol for drinking. ♦ 🚀 Node.js: 9 years of experience, ~700 packages published on NPM ♦ 💛 JavaScript: 9 years of experience, lots of libraries you can download freely (https://goo.gl/ewoQsK) ♦ 🗣 Fluent in speaking English & Romanian, and comfortable in Spanish & Portuguese ♦ 😸 GitHub Enthusiast (follow me: https://github.com/IonicaBizau) ♦ 😻 Git & GitHub power user ♦ 🍀 Comfortable with MongoDB (especially, the native driver for Node.js) ♦ ❇️ I will not charge you if I can't fix your issue. Why you can trust me: ★ I am a vegetarian. I have never eaten meat. 🍍🥑🥗 ★ I have never drunk wine, beer, etc. Water is the best. 💧 ★ I work for 6 days, and I rest on the 7th day. That's why I am *not* available on Saturdays (specifically between Friday's sunset and Saturday's sunset, my location at the time—you can my timezone a little bit below). 🙏 ★ I sleep between 9:18 PM and 4:42 AM. Depending on your timezone I can wake up earlier if you book a session with me. 💤 ★ I am a musician (pianist and organist). 🎹 ★ I use VIM on macOS and Linux. 🐧🍏

Fernando Yray

Solution-oriented. Love helping others. Passionate on Software/Web Development. I'm also open for **part-time/full-time job opportunity**. If your company or your friend needs a backend/frontend dev, please reach out to me.