Dalibor I.

Dalibor I.

Backend-udvikler

Toppræstation 9.5/10
Serbia
Betroet medlem siden 2021
20 års erfaring

Gennem sin karriere har han bygget pålidelige backendsystemer, integrationer og API'er inden for logistik, e-handel, fintech og SaaS og kombineret stærk teknisk ekspertise med en dyb forståelse for forretningsbehov.

En af hans vigtigste præstationer var at udvikle en offentlig Shopify-applikation for Rapid Logistics Group, hvor han integrerede logistikoperationer med e-handelsworkflows ved hjælp af Ruby on Rails, PostgreSQL og GraphQL API'er. På trods af ingen tidligere erfaring med Shopify eller logistikbranchen mestrede han hurtigt begge domæner og leverede en løsning, der strömlinede driften og skabte målbart forretningsværdi.

Dalibor er kendt for at oversætte komplekse forretningskrav til praktiske, vedligeholdelsesvenlige softwareløsninger. Efter tidligere at have samarbejdet med Proxify modtog han enestående kundefeedback for sin tekniske ekspertise, tilpasningsevne og evne til konsekvent at levere resultater af høj kvalitet.

Hovedekspertise

Ruby on RailsRuby on Rails15 år
RspecRspec15 år
MySQLMySQL15 år
RubyRuby15 år
17+

Erfaring9

Rapid Logistics Group

Ruby on Rails-udvikler

Rapid Logistics Group
Transportation and Logistics
Dec 2024 - Jul 2025 · 7m
  • Udviklede en offentlig Shopify-applikation, der integrerede e-handelsbutikker med interne logistiksystemer og strömlinede ordrestyring og opfyldningsworkflows
  • Byggede skalerbare backendfunktioner med Ruby on Rails og PostgreSQL og sikrede høj ydeevne og langsigtet vedligeholdelsesevne
  • Integrerede Shopify GraphQL API'er til synkronisering af produkter, ordrer og opfyldningsdata på tværs af platforme i realtid
  • Udviklede sikre integrationer med interne logistiksystemer, der muliggjorde problemfri dataudveksling og reducerede manuelle processer
  • Anvendte bedste praksis inden for databasedesign, baggrundsjobbbehandling og automatiseret testning for at sikre produktionsstabilitet og skalerbarhed
  • Leverede en løsning, der automatiserede opfyldningsprocesser, forbedrede leveringsnøjagtighed og gjorde det muligt for logistikplatformen at skalere effektivt
PostgreSQLPostgreSQL
Ruby on RailsRuby on Rails
GraphQLGraphQL
ShopifyShopify
API
2+
Faktus

Senior Software Engineer

Faktus
Information Technology (IT) and Services
Oct 2023 - Sep 2024 · 11m
  • Udviklede backendfunktioner til en finansiel platform, der betjener små og mellemstore virksomheder i byggebranchen ved hjælp af Ruby on Rails
  • Byggede brugervendt funktionalitet med Stimulus og Tailwind CSS for at forbedre kundeoplevelsen
  • Integrerede tredjeparts-API'er og automatiserede datasynkronisering samt reducerede manuel operationel indsats
  • Optimerede SQL-forespørgsler for at forbedre databaseydeevne og applikationsresponsivitet
  • Udviklede automatiserede testsuiter for at forbedre applikationsstabilitet og understøtte pålidelige implementeringer
PostgreSQLPostgreSQL
Ruby on RailsRuby on Rails
RspecRspec
GraphQLGraphQL
SidekiqSidekiq
Shift

Senior Software Engineer

Shift
Automotive
May 2022 - Aug 2023 · 1å 3m
  • Udviklede og vedligeholdt Ruby on Rails API'er, der understøttede køretøjsofferteringsprocessen for en højttrafikeret bilplatform
  • Optimerede prissætningsalgoritmer i Go og forbedrede offertnøjagtighed og den overordnede brugeroplevelse
  • Finjusterede SQL-forespørgsler for at forbedre databaseydeevne og reducere svartider under høj belastning
  • Refaktorerede ældre kode for at forbedre vedligeholdelsesevne, reducere teknisk gæld og fremskynde funktionslevering
  • Udviklede automatiserede testsuiter for at sikre applikationsstabilitet og understøtte pålidelige implementeringer
  • Gennemførte code reviews og mentorerede teammedlemmer og fremmede tekniske bedste praksisser og kodekvalitet
PostgreSQLPostgreSQL
Ruby on RailsRuby on Rails
RspecRspec
MicroservicesMicroservices
CucumberCucumber
2+
Fair.com

Senior Software Engineer

Fair.com
Automotive
Dec 2021 - May 2022 · 5m
  • Udviklede og vedligeholdt skalerbare API'er til kassaplatformen i en e-handelsapplikation til køretøjer med Ruby on Rails
  • Optimerede SQL-forespørgsler for at forbedre databaseydeevne og reducere svartider i perioder med høj trafik
  • Udviklede automatiserede testsuiter for at sikre applikationsstabilitet og understøtte pålidelige implementeringer
  • Deltog i code reviews og fremmede ren, vedligeholdelsesvenlig kode og tekniske bedste praksisser
  • Samarbejdede med tværfunktionelle teams om at levere tekniske løsninger i overensstemmelse med forretningsmål
  • Overgik til Shift-ingeniørteamet efter Fair.coms overtagelse og fortsatte backendudvikling på bilplatformen
PostgreSQLPostgreSQL
RubyRuby
RspecRspec
MicroservicesMicroservices
gRPCgRPC
SidekiqSidekiq
Thinkful

Web Development Mentor

Thinkful
Education Technology (EdTech)
Apr 2018 - Dec 2021 · 3å 8m

As a mentor at Thinkful, an online coding bootcamp, I supported students in mastering software engineering and web development concepts. My role included delivering personalized guidance to help students understand complex topics, complete projects and prepare for successful careers in tech.

I provided additional learning resources, clarified technical challenges and conducted assessments to evaluate student progress. My mentorship extended to career coaching, where I helped students build portfolios and refine their problem-solving skills.

During my time at Thinkful, I mentored over 200 students, achieving a high success rate in job placements. My approach emphasized fostering confidence, encouraging continuous learning and preparing students for the dynamic demands of the tech industry.

AjaxAjax
Bloc

Ruby on Rails Mentor

Bloc
Online Learning and EdTech
Feb 2015 - Mar 2018 · 3å 1m

At Bloc, I served as a Ruby on Rails mentor, guiding students through their web development journeys in one of the premier online coding bootcamps.

My responsibilities included clarifying challenging concepts, helping students complete complex assignments and ensuring they built a strong foundation in Ruby on Rails.

I reviewed projects, provided constructive feedback and taught best practices for developing scalable, maintainable web applications. I also curated additional resources tailored to individual learning needs, helping students overcome obstacles and meet their career goals.

When Bloc was acquired by Thinkful in 2018, I transitioned to their team, continuing my mentorship role with an expanded focus on preparing students for real-world software engineering roles.

RubyRuby
Ruby on RailsRuby on Rails
AjaxAjax
Softserbia

Senior Software Developer

Softserbia
Information Technology (IT) and Services
Nov 2003 - Jan 2018 · 14å 2m

As the co-founder and technical manager of SoftSerbia, I have been instrumental in building one of the first outsourcing companies in Serbia, specializing in delivering tailored software solutions to global clients. My role has evolved over 20+ years, balancing strategic leadership with hands-on technical contributions.

I led the transition to modern frameworks like Ruby on Rails and PHP, enabling the team to deliver scalable, maintainable and high-performing applications. My focus on process improvement resulted in a increase in team efficiency, achieved by streamlining workflows and adopting cutting-edge tools.

A key part of my role involves mentoring a diverse team of developers, guiding them through technical challenges, fostering a collaborative culture and encouraging continuous learning. I designed and implemented robust development methodologies that ensure consistency, quality and innovation across all projects.

As a consultant, I’ve provided expertise in database optimization, API development and SaaS architecture for high-profile clients. Under my guidance, the team has successfully delivered projects ranging from enterprise-grade systems to niche web solutions.

PHPPHP
LaravelLaravel
MariaDBMariaDB
RubyRuby
Ruby on RailsRuby on Rails
5+
AlefBrain

Web developer

AlefBrain
Artificial Intelligence (AI)
Oct 2002 - Oct 2003 · 1å

Simultaneously with my teaching role, I worked as a freelance web programmer at AlefBrain. This position marked my transition into professional software development, where I was primarily engaged in creating dynamic web applications using PHP and MySQL.

I collaborated on several projects, focusing on database-driven applications and user interfaces. My work laid the foundation for my expertise in web development, which I later expanded upon in future roles.

PHPPHP

Research assistant

Faculty of Mechanical Engineering
Education
Nov 1999 - Aug 2005 · 5å 9m

My first professional role was as a research assistant at the Faculty of Mechanical Engineering in Kragujevac, where I balanced teaching responsibilities with participation in cutting-edge research projects.

I taught several technical courses, including Nonlinear Systems of Automatic Control, Measuring Systems and Techniques and Electrotechnics with Electronics. My teaching focused on bridging theoretical knowledge with practical applications, fostering a deeper understanding among engineering students.

In research, I contributed to projects sponsored by the Serbian Ministry of Science, focusing on automotive systems, including active suspension systems and mechanical design improvements. My work re

MatlabMatlab

Ingeniørmæssig fremragendehed

Alle Backend-udviklerer, der har ansøgt til Proxify, får en score fra 0 til 300 på teknisk dygtighed, en af de fem parametre, vi evaluerer. Denne score afspejler kun teknisk dygtighed baseret på interviews, hjemmeopgaver, live kodningssessioner og/eller vurderinger af præstationer på jobbet. Kurven viser, hvordan alle evaluerede Backend-udviklerer er fordelt over dette interval, hvor vores acceptgrænse for denne parameter ligger, og hvor Dalibor står.

050100150200250300Engineering excellence scoreShare of engineersmedianmeanProxifyacceptancethreshold
Dalibor
Score 238 · Top 1% of engineers

Portefølje

Fremhævet af Dalibor

App4Travel 1
App4Travel

Andre projekter 3

123 skins
Shift
Faktus

Uddannelse

UIK
University in Kragujevac
Faculty of Engineering1996 - 1999

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