Bartosz Doszczak

• Contributed to the design and delivery of software solutions supporting High Income department operations, collaborating closely with product owners, technical stakeholders, and cross-functional teams.
• Contributed to the Order Gateway project, ensuring a seamless handover and knowledge transfer to the maintenance team.
• Designed and implemented the Preview & Bypass feature to forecast order routing outcomes, significantly reducing operational errors.
• Participated in the end-to-end delivery of the Security Screener, from design through production release.
• Designed and implemented the integration of Fitch CLOs into the Alphabet application.
• Mentored junior engineers, providing guidance on day-to-day execution and resolving complex technical challenges.
• Tech Stack: Java, Spring Boot, REST, GraphQL, Kafka, Apache Solr, Datadog, EKS/Kubernetes, Jenkins, Maven, Git, AWS, Angular, Oracle, Playwright, Karate

• Designed and delivered software for the General Insurance department as part of the Digital Team, collaborating actively with business stakeholders, infrastructure, security, and support teams.
• Contributed to Re-platforming project by specifying, designing components and REST APIs, implementing integration with 3rd party software, enabling Aviva to transition from legacy J2EE to modern microservice architecture.
• Led the successful delivery of the Payment Integration System (REST API), ensuring seamless transition several consumers to the new provider while adhering to standards and regulations.
• Enhanced platform observability through ELK-based blue-print capabilities, improving diagnostic accuracy and reducing downtime and repair time.
• Developed performance test suites for various APIs that facilitated the identification of performance and concurrency issues and their prompt resolution.
• Contributed to the migration of the platform - APIs and UIs to AWS, integrating secret vaults and enhancing security measures and improving the deployment mechanism accordingly.
• Recommended and implemented infrastructure and process improvements, including graceful shutdown procedures and critical application deployment processes, to strengthen system resilience.
• Delivered Document Upload Orchestrator (REST APIs) automating manual processes and integrating with the Box platform.
• Collaborated with the Marketing Team on Adobe Launch integration, providing design, reference implementation, and end-to-end maintenance.
• Tech Stack: Java, Springboot, REST, ELK, Artifactory, Ansible, Jenkins, Maven, Git, Stash, Kong, Consul, AWS, Hazelcast, React, Terraform, PostgreSQL, Oracle, Cypress, Selenium, Cucumber, Linux, Windows, Bash, Python

• Collaborated with team to develop cloud-based solutions prioritising performance, scalability, and resiliency.
• Delivered Spring Boot and Kafka-based solutions for JPMC's cloud-based contact center.
• Developed a resiliency chaos testing solution and designed and implemented performance testing suites, observability, and high-availability features.
• Executed Proof of Concept for Drools and REST-based rule engine in cloud environment.
• Tech Stack: Java, Spring Boot, REST, Kafka, Drools, Cloud Foundry, IBM Bluemix, Redis, Gemfire, Cassandra, React, Cucumber, Jenkins, Artifactory, Linux

• Developed software solutions for business and technology teams in FIMT group, enhancing cross-functional collaboration.
• Designed and implemented CPLEX-based optimisation engine for Cloning project, improving operational efficiency.
• Led services team to deliver Performance Workspace, ensuring alignment with project goals and timelines.
• Introduced test automation and improved the release process.
• Tech Stack: Java, Springboot REST, Oracle, Dynatrace, Jenkins, Artifactory, Maven, Selenium, Cucumber, Splunk, CPLEX, Angular, .Net, Linux

• Led technical development of Performance Attribution Website, providing access to two decades of data for enhanced decision-making.
• Collaborated with analysts and stakeholders to define requirements, design instrumentation and monitoring solutions, and implement test automation for improved system reliability.
• Designed and implemented streamlined release and support processes to enhance operational efficiency.
• Ensured the desired capacity and performance of the system.
• Tech Stack: Java, Tomcat, REST, Oracle, Jenkins, Ext JS 4, Splunk

• Scaled Cisco Unified Mobility Advantage to support 5000 users through strategic testing, profiling, refactoring, and system redesign.
• Conducted performance and scalability analysis for Web Unified Communication, influencing architecture decisions.
• Designed and implemented IM&P component for Cisco Jabber, creating Unified API for client access to Unified Communication Services.
• Tech Stack: Java, XMPP, Jetty, Tomcat, JBoss, JMeter, Grinder, C++

Technical Design Lead — eSuite Product Line

• Owned technical direction across a portfolio of Rich Internet Applications (Adobe Flex) and web applications, ensuring solutions were robust, scalable, and aligned with business objectives.
• Led proof-of-concept initiatives and technical investigations, evaluating emerging technologies to shape product strategy.
• Authored and maintained Component Architecture Documents, collaborating with Product Management, Architects, and Project Managers to ensure alignment with product vision.
• Enforced design consistency across development teams through design reviews, steers, and solution approvals.
• Championed continuous improvement of products, component libraries, frameworks, and engineering practices to enhance overall quality.

Tech Stack: Java | Spring | Tomcat | Oracle | Adobe Flex 2

Delivered hands-on development of products for major telecoms operators including Vodafone, O2, AOL, BT Global Services, and Eircell.

• SelfCare — Designed and developed CRM-independent RIA (Flex) account management application, ensuring seamless transition from PoC prototype to production.
• Flex 2 PoC — Spearheaded research and evaluation of Adobe Flex 2, influencing the team's technology direction.
• Business Processing Engine — Led analysis, design, and development of process management engine built on jBPM, streamlining business processes.

Tech Stack: Java, Spring, Tomcat, Adobe Flex 2, Oracle, jBPM, RMI

Designed and developed web applications for telecoms industry, enhancing user experience and service delivery.

• Analyser 5 - Designed and developed web-based data warehouse application, enabling access to billing information and invoice analysis, improving data accessibility.
• Designed and developed distributed Job Management system, orchestrating workloads across multiple report-generation engine instances to streamline processing.

Tech Stack: Java, Spring, Tomcat, RMI

Delivered a suite of web-based flight operations systems for major airlines including KLM, Air Canada, Martinair, and Finnair, enhancing operational efficiency.

• Developed load balancing system with AHM650 compliant weight and balance management, ensuring regulatory compliance and safety.
• Briefing Station — Built an application for assembling and distributing flight briefings, integrating with external systems including LIDO OC.
• Delivered crew roster management system for cabin and cockpit operations, streamlining scheduling and resource allocation.

Tech Stack: Java, J2EE, JMS, IBM WebSphere, Oracle, DB2, JavaScript

• Developed and deployed an intranet application for gathering and reporting disaster damage data (flood, fire, etc.), managing all stages from design through to implementation.
• Administered network and software infrastructure in Windows 98/2000 and Linux environments, ensuring system stability and performance.

Tech Stack: PHP, MySQL, Linux