Adam Nowak - Senior Software Engineer

Q: Where is Adam based?

Adam is based in Warsaw, Poland .

Q: What languages does Adam speak?

Adam speaks the following languages: Polish (Native), English (Advanced) .

Q: How many years of experience does Adam have?

Adam has at least 11 years of experience. During this time, Adam has worked in at least 3 different roles and for 4 different companies . The average length of individual experience is 3 years and 10 months . Note that Adam may not have shared all experience and actually has more experience.

Q: What is Adam's latest experience?

Adam's most recent position is Senior Software Engineer at Polarising .

Q: What companies has Adam worked for in recent years?

In recent years, Adam has worked for Polarising and data.ai (by Sensor Tower) .

Q: Which industries is Adam most experienced in?

Adam is most experienced in industries like Information Technology (IT) , Advertising , and Retail .

Q: Which business areas is Adam most experienced in?

Adam is most experienced in business areas like Information Technology (IT) , Product Development , and Business Intelligence .

Q: Which industries has Adam worked in recently?

Adam has recently worked in industries like Information Technology (IT) .

Q: Which business areas has Adam worked in recently?

Adam has recently worked in business areas like Information Technology (IT) , Product Development , and Business Intelligence .

Recommended expert

Warsaw, Poland

Experience

Jul 2021 - Dec 2025

4 years 6 months

Senior Software Engineer

Polarising

Owned delivery of a multi-tenant SaaS product with React and Next.js (SSR/ISR), standardizing data access patterns through GraphQL (Apollo) and improving UI consistency across modules.
Designed service boundaries and migrated monolithic workflows into containerized microservices using Python (Django/Flask), Node.js, Java (Spring Boot), and .NET Core to enable independent scaling and safer releases.
Implemented event-driven processing with Kafka and RabbitMQ for ingestion, notifications, and long-running jobs, using idempotency keys, retries, and DLQ patterns to ensure reliability under load.
Built applied AI capabilities (LLM/NLP) including summarization, classification, and semantic search; implemented RAG pipelines with embeddings and vector indexing using LangChain to improve knowledge discovery.
Created secure REST and GraphQL APIs with strict validation, pagination, rate-limiting, and consistent error contracts; reduced client over-fetching and improved perceived performance.
Developed a React Native mobile app for operational workflows, integrating Firebase authentication, push notifications, and offline-first synchronization to support field usage.
Implemented subscription billing with Stripe/Braintree, validating webhooks, handling proration and refunds, and maintaining clear reconciliation trails for finance operations.
Deployed services on AWS EKS using Docker and Kubernetes, standardizing environments and improving horizontal scalability; leveraged S3 for documents and CloudFront for edge delivery.
Improved p95 API latency through PostgreSQL indexing/query tuning and Redis caching; optimized MongoDB aggregation pipelines and reduced hot-path queries via targeted denormalization.
Built CI/CD pipelines with GitHub Actions and CodePipeline including automated testing, dependency scanning, and rollout gates; adopted blue/green deployments and fast rollback criteria.
Implemented OAuth2/JWT security with Cognito/Azure AD integrations, RBAC, and audit trails; encrypted sensitive data using KMS and enforced least-privilege access policies.
Added observability across services using OpenTelemetry tracing, Prometheus metrics, and dashboards/alerts (Grafana/CloudWatch), reducing incident triage time and improving SLO compliance.
Delivered Web3/blockchain integrations (wallet auth and smart-contract interaction for verification/audit use-cases) with secure signing flows and backend verification services.
Led code reviews, mentoring, and architecture reviews; introduced engineering standards (API design, testing strategy, runbooks) that improved delivery predictability and maintainability.

Aug 2018 - Jun 2021

2 years 11 months

Full Stack Engineer

data.ai (by Sensor Tower)

Delivered a data-intensive analytics SaaS platform using TypeScript/React on the frontend and Python/Node.js services on the backend to support enterprise reporting and dashboards.
Built ingestion and transformation services in Python and Java that processed high-volume telemetry, including schema evolution, validation, deduplication, and backfills.
Designed performant data access layers on PostgreSQL and Redis, tuning indexes and query plans; reduced expensive report execution time by up to ~30%.
Implemented asynchronous job orchestration for batch reports and scheduled analytics, keeping interactive APIs responsive during heavy processing windows.
Introduced GraphQL for complex read use-cases, improving frontend developer experience and reducing the number of client round trips for multi-entity views.
Developed reusable UI primitives and data-visualization patterns in React, improving accessibility and standardizing UX across product areas.
Implemented secure auth flows (OAuth2/JWT) and service-to-service access patterns; contributed to RBAC models used across internal tools and customer-facing portals.
Added ML-assisted enrichment (NLP tagging, entity resolution) to improve data quality; collaborated with data science teams to operationalize model outputs in production workflows.
Containerized services with Docker and standardized CI/CD with automated tests and linting; improved deployment safety and reduced configuration drift between environments.
Improved observability by adding structured logs, metrics, and health checks; partnered with SRE to define alerts and reduce MTTR for incidents.
Optimized API performance through caching and pagination strategies; reduced payload sizes and improved client rendering times for large tables.
Worked directly with product stakeholders to translate business questions into measurable KPIs and reliable data products, owning deliverables from design through launch.

Feb 2016 - Jul 2018

2 years 6 months

Software Engineer

Storyteq

Built enterprise content/marketing platforms using Java (Spring Boot/Spring Cloud), Python services, and Angular frontends, supporting multi-tenant configuration and enterprise RBAC.
Designed microservices around campaign orchestration, asset pipelines, and integrations, enabling independent releases and improved fault isolation.
Implemented real-time dashboards using WebSockets and event-driven backends to provide live operational visibility for support and marketing teams.
Built REST APIs with OpenAPI/Swagger documentation, consistent error models, and versioning strategies to reduce client breakage during iterative delivery.
Integrated third-party APIs and internal services using resilient patterns (timeouts, retries, circuit breakers) to improve reliability under dependency failures.
Standardized CI/CD with Jenkins/Azure DevOps pipelines, reducing manual deployment steps and improving release predictability.
Introduced centralized observability using OpenTelemetry instrumentation and Prometheus/Grafana dashboards to shorten detection time for performance regressions.
Optimized service performance through SQL tuning, caching strategies, and payload reduction; maintained stable response times during high-traffic campaigns.
Implemented security improvements including token lifecycle management, least-privilege access policies, and dependency hygiene to reduce high-severity findings.
Supported cloud migrations and containerized workloads; contributed to Kubernetes deployment manifests and environment standardization across staging/production.
Partnered with QA and product on acceptance criteria and test strategy; improved release confidence through targeted integration tests and smoke suites.
Provided on-call support and root-cause analysis; documented runbooks and preventive fixes to reduce repeat incidents.

Oct 2014 - Jan 2016

1 year 4 months

Full Stack Engineer

Attract Group

Designed and maintained websites and eCommerce platforms using PHP (Laravel/CodeIgniter) and JavaScript, implementing core business logic for catalog, checkout, and order workflows.
Built responsive, mobile-first UIs and reusable components with Vue.js, HTML5, and CSS3 to improve usability across devices and increase conversion.
Implemented secure payment integrations (Stripe/PayPal and custom gateways), ensuring safe callback handling, clear reconciliation, and protection against replay attacks.
Developed admin dashboards and CMS tools for non-technical operators (content blocks, media uploads, configurable pages), improving operational efficiency.
Created REST endpoints and server-side validation for transactional flows; improved reliability through robust error handling and logging.
Optimized MySQL/PostgreSQL schemas and queries with indexing and query tuning; improved page and API response times for high-traffic pages.
Introduced background processing for emails, exports, and long-running tasks to keep request latency low and improve user experience.
Improved SEO and performance via asset minification, caching headers, image optimization, and lazy-loading strategies; increased Lighthouse scores for key landing pages.
Standardized Git workflows and CI checks to reduce regression risk and support parallel feature development.
Worked closely with stakeholders to clarify requirements, estimate scope, and deliver pragmatic solutions under timeline constraints.
Supported production incidents with debugging and root-cause analysis; implemented preventive fixes and documentation to reduce repeat issues.
Contributed to code quality improvements through refactoring and peer reviews; maintained clear release notes for client-facing changes.

Industries Experience

See where this freelancer has spent most of their professional time. Longer bars indicate deeper hands-on experience, while shorter ones reflect targeted or project-based work.

Experienced in Information Technology (11 years), Advertising (2.5 years), and Retail (1.5 years).

Information Technology

Advertising

Retail

Business Areas Experience

The graph below provides a cumulative view of the freelancer's experience across multiple business areas, calculated from completed and active engagements. It highlights the areas where the freelancer has most frequently contributed to planning, execution, and delivery of business outcomes.

Experienced in Information Technology (11 years), Product Development (11 years), and Business Intelligence (3 years).

Information Technology

Product Development

Business Intelligence

Summary

Senior Software Engineer with 10+ years of experience architecting and delivering high-performance, secure, and scalable full-stack products. Expert across Python, JavaScript/TypeScript, Java, C#, PHP, and Go, with modern frontend delivery using React, Angular, Vue.js, Next.js, and Nuxt.js. Proven track record modernizing monoliths into Docker/Kubernetes microservices, building REST/GraphQL APIs, and shipping applied AI features such as LLM-assisted workflows, NLP pipelines, RAG, and semantic search using LangChain. Strong focus on performance tuning, reliability engineering, CI/CD automation, and translating complex business requirements into maintainable system designs.

Selected highlights

Modernized legacy platforms into microservice and event-driven architectures using Python, Node.js, .NET Core, and Spring Boot, improving deployment frequency and reducing operational risk.
Built AI-powered product features (LLM/NLP, semantic search, RAG) with LangChain and vector indexing to automate knowledge workflows and accelerate user decision-making.
Delivered responsive web and mobile experiences with React, Next.js, Angular, and Vue.js, improving conversion and UX through performance and accessibility optimization.
Implemented cloud-native delivery on AWS with Docker, Kubernetes (EKS), Terraform, and CI/CD, supported by production observability (OpenTelemetry/Prometheus/Grafana).

Skills

Languages

Python
Javascript (Es6+)
Typescript
Java
C#
Php
Go
Sql
Bash

Frontend

React
Angular
Vue.js
Next.js
Nuxt.js
React Native
Html5
Css3
Tailwind
Bootstrap

Backend & Apis

Node.js
Django
Flask
Fastapi
Spring Boot
Spring Cloud
.Net Core
Laravel
Rest
Graphql (Apollo)
Grpc
Openapi/swagger

Ai / Data

Llm Integration
Nlp Pipelines
Langchain
Rag
Embeddings
Semantic Search
Vector Databases
Model-serving Via Api And Background Workers

Messaging

Kafka
Rabbitmq
Sqs/sns
Background Processing
Retries
Idempotency
Dlq Patterns

Datastores

Postgresql
Mysql
Mongodb
Redis
Elasticsearch
Indexing
Query Tuning
Caching Strategies

Cloud / Devops

Aws (Eks, Ec2, S3, Lambda, Rds, Cloudfront, Cognito, Kms, Cloudwatch)
Docker
Kubernetes
Terraform
Ci/cd (Github Actions, Codepipeline, Jenkins, Azure Devops)

Security / Quality

Oauth2
Jwt
Rbac
Secure Webhooks
Secrets Management
Soc 2-aligned Controls
Test Automation (Unit/integration)
Code Review Standards

Architecture

Microservices
Event-driven Architecture
Ddd
Cqrs
Clean Architecture
Observability (Opentelemetry, Prometheus, Grafana)

Languages

Polish

Native

English

Advanced

Education

Apr 2010 - Sep 2014

London Metropolitan University

Bachelor of Science · Computer Science · London, United Kingdom

Certifications & licenses

AWS Certified Developer

Azure Fundamentals

Profile

Created

January 2026

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Frequently asked questions

Do you have questions? Here you can find further information.

Where is Adam based?

Adam is based in Warsaw, Poland.

What languages does Adam speak?

Adam speaks the following languages: Polish (Native), English (Advanced).

How many years of experience does Adam have?

Adam has at least 11 years of experience. During this time, Adam has worked in at least 3 different roles and for 4 different companies. The average length of individual experience is 3 years and 10 months. Note that Adam may not have shared all experience and actually has more experience.

What roles would Adam be best suited for?

Based on recent experience, Adam would be well-suited for roles such as: Senior Software Engineer, Full Stack Engineer, Software Engineer.

What is Adam's latest experience?

Adam's most recent position is Senior Software Engineer at Polarising.

What companies has Adam worked for in recent years?

In recent years, Adam has worked for Polarising and data.ai (by Sensor Tower).

Which industries is Adam most experienced in?

Adam is most experienced in industries like Information Technology (IT), Advertising, and Retail.

Which business areas is Adam most experienced in?

Adam is most experienced in business areas like Information Technology (IT), Product Development, and Business Intelligence.

Which industries has Adam worked in recently?

Adam has recently worked in industries like Information Technology (IT).

Which business areas has Adam worked in recently?

Adam has recently worked in business areas like Information Technology (IT), Product Development, and Business Intelligence.

What is Adam's education?

Adam holds a Bachelor in Computer Science from London Metropolitan University.

Does Adam have any certificates?

Adam has 2 certificates. These include: AWS Certified Developer and Azure Fundamentals.

What is the availability of Adam?

Adam is immediately available full-time for suitable projects.

What is the rate of Adam?

Adam's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.