Software Developer

About the Position

We're seeking a Software Developer with extensive Ruby on Rails experience for a part-time position in Sarajevo, Bosnia and Herzegovina.

Responsibilities

• Develop, ship, and maintain Rails applications
• Build and optimize REST APIs
• Implement caching with Redis and PostgreSQL usage
• Perform query optimizations and measurable impact improvements
• Lead code reviews and architectural decisions

Requirements

• Over 7 years of recent, continuous Ruby on Rails experience
• Strong background in backend infrastructure work
• Proficiency in dealing with big distributed data systems
• Self-motivated and deadline-focused

Skills & Expertise

Tools

• Bitbucket
• Sublime Text
• Git
• RSpec
• GitLab
• GitHub
• NGINX
• RabbitMQ
• Mercurial
• Subversion (SVN)
• Capistrano
• AWS CLI

Storage

• PostgreSQL
• JSON
• Redis
• MongoDB
• MySQL
• Elasticsearch
• Amazon S3 (AWS S3)
• PostGIS

Languages

• SQL
• HTML5
• Ruby
• JavaScript
• XML
• Unicorn

Paradigms

• Agile Software Development
• Scrum
• Object-oriented Programming (OOP)
• Microservices Architecture
• Microservices
• REST
• Unit Testing

Platforms

• Heroku
• Amazon Web Services (AWS)
• Linux
• Amazon EC2
• Ubuntu
• Google Cloud Platform (GCP)
• Azure
• Docker
• New Relic

Frameworks

• AngularJS
• Ruby on Rails (RoR)
• minitest
• Sails.js
• Bootstrap 3
• Bootstrap
• JSON Web Tokens (JWT)
• ActionCable

Libraries/APIs

• REST APIs
• jQuery
• Sidekiq
• Delayed Job
• Node.js
• Backbone.js
• Web API
• Facebook API
• X (formerly Twitter) API
• Twilio API
• Foursquare API
• LINQ
• Stripe

We Offer

• Opportunity to work in a dynamic and innovative environment
• Collaborate with a team of experienced professionals
• Competitive compensation package

About the Company

[Company description if present]

Work Experience

Lead Back-end (Ruby on Rails) Engineer

A.G.L.

· 2022 - 2023

• Collaborated directly with Airbnb's and Andopen's managers on the AirbnbLove website. Oversaw planning and design of new features for implementation and further support. Performed refactoring and optimization of queries used on most common application endpoints. Integrated a third-party API, wrote tests, and ensured that every newly developed feature was covered by test cases. Participated in the code reviews process for other developers.

Lead Ruby on Rails Engineer

C.C.I.

· 2021 - 2022

• Spearheaded back-end development while transitioning between various roles, including web/front-end development and DevOps-related work. Participated in the whole process from planning to implementing and delivering all new features. Prepared and conducted interviews for new employees. Provided code reviews and guidance for less experienced developers.

Senior Ruby on Rails Developer

A.P.L.

· 2020 - 2021

• Implemented communication between microservices using RabbitMQ. Optimized the most used features using high-quality code standards and techniques. Query optimization for most critical endpoints of the system. Worked on the other performance front-end related improvements. Provided code reviews and guidance for other developers.

Ruby on Rails Engineer

R.I.

· 2020 - 2020

• Worked on optimizing old features and some legacy code refactorings. Implemented new features related to the healthcare domain. Tested newly implemented features by writing tests and making sure the code was covered with tests.

Technical Team Lead/Senior Ruby on Rails Engineer

R.P.S.

· 2019 - 2020

• Developed back-end functionalities using Ruby on Rails technology stack. The back end was a cloud-hosted, real-time offer and management solution: an API that was used by multiple clients. Planned and implemented new features. Contributed to business decisions like prioritization of tasks and estimates for new features. Introduced git-flow branching model and improved the overall development process. Reviewed code for other team members and made sure that code quality is of a high level by following the latest best practices and standards proposed by the Ruby/Rails community. Identified system weak points and optimized critical parts of the system. Refactored the system's most used endpoints and improved response time by more than 200%. Made architectural decisions like choosing the best application and web server, scaling the API by moving I/O intensive tasks to asynchronous/background processing (Sidekiq), and more.

Senior Ruby on Rails Engineer

K.D.

· 2018 - 2019

• Contributed to the development of a fintech project and provided performance troubleshooting and optimizations. Developed primarily back-end (microservices, REST API integrations, etc.) features but contributed to the full stack. Implemented solutions and delivered high-quality software based on Ruby on Rails. Applied software standards of clean code and proven optimization techniques. Created, maintained, and debugged software. Planned and defined requirements, creating software designs and translating them into code.

Lead Software Engineer

O.I.A.E.

· 2017 - 2018

• Managed a team of five people, coaching and mentoring them as well as supervising their day to day activities. Reviewed code and developed on front-end projects. Led the team as scrum master.

Senior Ruby on Rails Engineer

G.

· 2016 - 2017

• Contributed to the development of a number of small projects. Provided full-stack development. Managed a small team and reviewed code. Set project architecture.

Senior Ruby on Rails Engineer

P.V.T.

· 2016 - 2016

• Worked on a back-end REST API. Implemented Redis caching for the REST API. Worked with geospatial queries (PostGIS) and geocoding. Refactored some of the previously implemented features like importing events and venues from external APIs (Eventful/Foursquare). Participated in code reviews. Implemented API versioning and authentication. Worked on parsing tweets ingested from Twitter, using Twitter Stream. Refactored notifications (SMS, email, push notifications). Fixed bugs.

Senior Ruby on Rails Engineer

S.C.V.T.

· 2016 - 2016

• Developed architecture for a new REST API used for an eCommerce site. Worked on a REST API that uses Spree eCommerce framework. Created Ansible scripts to migrate data from an Amazon RDS instance to Heroku. Helped to set up and deploy a new API to Heroku. Participated in code reviews.

Senior Software Engineer

M.S.

· 2013 - 2016

• Worked on several projects as a full-stack developer using a broad range of technologies and following the Agile and Scrum methodologies of software development. Worked on creating a powerful survey engine that enables company-wide management of surveys. Worked on a promotions management web app used for creating and scheduling effective promotion campaigns, contests, and events for a given organization. Worked on a hybrid mobile app (PhoneGap + Ionic framework + AngularJS) used for time tracking employees or members of a given organization. Worked on a web app that provides information to hunters about planning hunting season. The app provides services for scheduling and reservation of hunting stands and marking the stands using Google Maps. Worked on a social network site intended for hunters. The app provides several advanced functionalities like a friends suggestion engine, notifications, messaging, content sharing, and integration with other popular social networks like Facebook, Google+, and Twitter.

Software Engineer

R.B.

· 2011 - 2013

• Worked on core banking services and financial systems that supported more than a million financial transactions per day. Worked with large, complex, and distributed databases. Exposed to the complexities on all levels and phases of the software development cycle. Worked on various optimizations processes (SQL queries, reporting services, WCF services optimization, and configuration). Provided real-time support for a large number of customers. Created a powerful engine that deals with processing and generation of SWIFT transactions. Worked on business and transaction rule engines that represent an important part of the core of banking system. Worked on creating e-banking and mobile banking services.

Junior.NET Developer

C.

· 2011 - 2011

• Worked primarily on the back end. Wrote and managed IVR Scripts. Parsed a variety of XML messages. Contributed to service integration with BH Telecom. Developed SMS message processing.

Preferred Environment

• Git
• Sublime Text
• Ubuntu
• Linux

Location

Sarajevo, Federation of Bosnia and Herzegovina, Bosnia and Herzegovina

Experience

15 years

Availability

Part-time

Amazing Thing

...thing I've coded is an engine for processing, generating, and parsing SWIFT transactions and messages.

Interested in this candidate?

Create a free account to request contact details and add candidates to your shortlist.

Sign up to request contact

Log in

Already have an account? Log in