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I am a Senior Full Stack Software Engineer with 10+ years of experience designing, developing, and delivering enterprise-grade web applications across consulting and SaaS environments. I build scalable, secure cloud-native solutions using React, TypeScript, JavaScript, and modern backend technologies, with a focus on RESTful APIs and distributed architectures for high-availability platforms. I collaborate with cross-functional teams to modernize applications, optimize performance, and improve software quality. I value security, privacy, and excellent user experiences, and I enjoy mentoring engineers, driving architectural improvements, and delivering customer-focused products throughout the full software development lifecycle.…I am a Senior Full Stack Software Engineer with 10+ years of experience designing, developing, and delivering enterprise-grade web applications across consulting and SaaS environments. I build scalable, secure cloud-native solutions using React, TypeScript, JavaScript, and modern backend technologies, with a focus on RESTful APIs and distributed architectures for high-availability platforms. I collaborate with cross-functional teams to modernize applications, optimize performance, and improve software quality. I value security, privacy, and excellent user experiences, and I enjoy mentoring engineers, driving architectural improvements, and delivering customer-focused products throughout the full software development lifecycle.

Łukasz Jędrzejewski

Full Stack Developer, Web Developer, Back-End Developer, +2

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I am a Senior Full Stack Software Engineer with 10+ years of experience designing, developing, and delivering enterprise-grade web applications across consulting and SaaS environments. I build scalable, secure cloud-native solutions using React, TypeScript, JavaScript, and modern backend technologies, with a focus on RESTful APIs and distributed architectures for high-availability platforms. I collaborate with cross-functional teams to modernize applications, optimize performance, and improve software quality. I value security, privacy, and excellent user experiences, and I enjoy mentoring engineers, driving architectural improvements, and delivering customer-focused products throughout the full software development lifecycle.…I am a Senior Full Stack Software Engineer with 10+ years of experience designing, developing, and delivering enterprise-grade web applications across consulting and SaaS environments. I build scalable, secure cloud-native solutions using React, TypeScript, JavaScript, and modern backend technologies, with a focus on RESTful APIs and distributed architectures for high-availability platforms. I collaborate with cross-functional teams to modernize applications, optimize performance, and improve software quality. I value security, privacy, and excellent user experiences, and I enjoy mentoring engineers, driving architectural improvements, and delivering customer-focused products throughout the full software development lifecycle.

Available to hire

I am a Senior Full Stack Software Engineer with 10+ years of experience designing, developing, and delivering enterprise-grade web applications across consulting and SaaS environments. I build scalable, secure cloud-native solutions using React, TypeScript, JavaScript, and modern backend technologies, with a focus on RESTful APIs and distributed architectures for high-availability platforms.

I collaborate with cross-functional teams to modernize applications, optimize performance, and improve software quality. I value security, privacy, and excellent user experiences, and I enjoy mentoring engineers, driving architectural improvements, and delivering customer-focused products throughout the full software development lifecycle.

Skills

Experience Level

Expert

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Intermediate

Intermediate

Work Experience

Senior Full Stack Software Engineer at Qualtrics

November 1, 2019 - Present

Developed scalable React, TypeScript, and backend capabilities supporting millions of users; implemented secure RESTful APIs integrating multiple internal and external systems; architected reusable frontend components; optimized backend services for high-volume workloads and reduced data synchronization latency; designed PostgreSQL schemas and tuned complex queries; integrated cloud-native services, authentication, and third-party platforms; enhanced security, privacy, and compliance; automated CI/CD pipelines; expanded automated testing across unit, integration, and end-to-end levels; mentored engineers; implemented monitoring and observability to accelerate incident resolution; collaborated with product, UX, QA, and stakeholders to deliver enterprise features end-to-end.

Senior Software Developer at EPAM Systems

April 1, 2016 - November 1, 2019

Designed enterprise web applications using JavaScript, TypeScript, and modern backend technologies; engineered secure REST APIs enabling seamless integration between enterprise platforms; developed reusable frontend components; optimized backend performance by refactoring services and database operations; implemented automated testing strategies; collaborated with architects, business analysts, QA, and stakeholders; integrated third-party APIs and authentication services; modernized legacy software with maintainable patterns; configured CI workflows and deployment automation; resolved complex production issues; partnered with globally distributed teams using Agile methodologies; mentored junior developers.

Software Developer at Ready4S

October 1, 2015 - April 1, 2016

Built responsive web features using JavaScript, HTML, CSS, and backend technologies; created reusable UI components; implemented RESTful API integrations; improved frontend performance and accessibility; developed database-driven functionality supporting dynamic business workflows; collaborated with designers, developers, and project managers; participated in Agile ceremonies; produced clean, maintainable code; assisted with debugging production issues; expanded automated testing; contributed to full software development lifecycle from planning to deployment.