We offer flexible code review services tailored to your development workflow — whether you need continuous oversight, fast expert feedback, or validation after AI-assisted development.
Ongoing code review services
We embed experienced engineers into your workflow to continuously review your pull requests. This ensures consistent code quality, adherence to best practices, and early detection of any issues.
Best for: long-term projects, growing teams, and products under active development.
On-demand code review services
Get expert code reviews exactly when you need them without long-term commitments. Submit specific features, modules, or pull requests and receive detailed, actionable feedback from senior engineers.
Best for: startups, projects with tight deadlines or critical releases.
Post-vibe coding code review
AI accelerates development — we make sure it's production-ready. Our engineers review AI-generated code for security, architecture, performance, and maintainability, eliminating risks introduced during rapid vibe-coding cycles.
Best for: AI-assisted product development, MVPs, and fast prototyping.
Code review as a service
A fully managed solution combining structured review processes, senior expertise, and modern tooling. We become your external code quality layer, ensuring every release meets engineering standards.
Best for: companies without in-house senior reviewers or teams scaling rapidly.
Our code review process is designed to be transparent, efficient, and focused on real impact. We combine automated analysis with senior-level manual reviews to uncover risks early, improve code quality, and provide clear, actionable recommendations — without disrupting your development team's flow.
01
Scope & goals alignment
Day 1: We start by understanding your product, tech stack, timelines, and review objectives, whether it's security, performance, maintainability, or readiness for release.
02
Secure repository access
Day 2: We set up controlled, read-only access to your repositories and CI tools and sign NDA, following strict security and confidentiality practices.
03
Automated & manual source code review
Days 3-5: We run automated scans via SonarQube and other tools for vulnerabilities and code smells, then perform a deep manual review by senior engineers focusing on architecture, logic, and best practices.
04
Findings, prioritization & discussion
Day 6: All findings are grouped by severity and impact. We review them with your team, explain trade-offs, and clarify which issues need immediate attention.
05
Actionable report & roadmap
Day 7: You receive a clear report for executives and tech specialists with recommendations, code examples, refactoring suggestions, and a prioritized improvement roadmap.
06
Follow-up support
Day 8+: We support your team during fixes, re-review changes if needed, and help validate improvements before release.
*The timelines below are approximate and adapt by your product type.
Ready to ship cleaner, safer code with expert reviews?
Get a tailored review plan, catch bugs earlier, reduce technical debt, and ship production-ready code with confidence.
We don't rely on subjective opinions alone. Our code review services are guided by measurable, industry-proven metrics that help us assess quality, risk, and long-term maintainability with precision.
We analyze cyclomatic complexity, nesting depth, and function size to identify code that is hard to read, test, or maintain. Lower complexity means easier changes and fewer hidden bugs.
This metric shows how easy the codebase will be to support and extend over time. It helps us detect areas that may cause technical debt or slow down future development.
We measure duplicated logic across files and modules. Reducing duplication improves consistency, simplifies fixes, and prevents bugs from appearing in multiple places.
We review not just how much code is covered by tests, but also the quality of those tests — edge cases, assertions, and meaningful validation of business logic.
We track any security vulnerabilities, insecure patterns, missing validations, unsafe dependencies, and OWASP-related risks to ensure your code is secure by design.
We identify slow paths, inefficient algorithms, unnecessary computations, and memory-heavy operations that could degrade performance under load.
Consistent naming, formatting, and structure make code easier to read and review. We measure adherence to agreed coding standards across the codebase.
We assess how risky a change is based on file churn, dependency impact, and historical modifications — helping prevent regressions and unstable releases.
We understand that trusting an external team with reviewing your code requires confidence. That's why always we focus on measurable experience and proven expertise.
7+
years
of hands-on experience reviewing, refactoring, and scaling production code across diverse industries and applications.
100+
engineers
with deep expertise in modern architectures, frameworks, and secure coding practices. We contribute real-world engineering insights, helping teams ship cleaner, safer, and more maintainable code.
~85%
senior & lead engineers
who specialize in architecture reviews, performance optimization, and security analysis. We prioritize experience and critical thinking to catch issues automated tools often miss.
70+
successful projects reviewed
from startups to enterprise systems, helping teams reduce technical debt, prevent regressions, and release with confidence and high-quality, production-ready code.
Want senior-level code audits without hiring in-house developers?
Let our experts review your code, reduce technical debt, and strengthen your product with confidence.
Professional code review as a service delivers value far beyond finding bugs. It strengthens your product, protects your roadmap, and improves long-term development efficiency.
Higher code quality
Early detection of logic flaws, architectural issues, and code smells leads to cleaner, more reliable software that's easier to maintain and extend.
Stronger security
Code reviews uncover insecure patterns, and risky dependencies before they reach production, reducing the likelihood of costly security incidents.
Improved performance & scalability
Identifying inefficient algorithms, memory issues, and bottlenecks ensures your system performs well and scales smoothly as usage grows.
Reduced technical debt
Consistent review prevents shortcuts from becoming long-term problems, lowering refactoring costs and improving the future development process.
Faster, safer releases
Fewer post-release bugs, fewer emergency fixes, and more confidence in every deployment help teams ship faster without compromising stability.
Lower development costs
Fixing issues early is significantly cheaper than resolving them in production: saving your time, budget, and team resources.
Fively impresses with the excellent outcomes they achieve with service-minded attitude they maintain.
David J Roman
Founder at SpiritVen
They did a wonderful job!
Charles Chase
Founder at ComFi
Diligent project managers and the team will go the extra mile when you need them to.
Ben M. Argeband
CEO at SaaS Company
They have their heads in the game, and they care about the project rather than finishing it as quickly as possible.
Kasper Fogh
CTO at Uniqkey
Whenever we need more resources or help, we got very good results from their management.
Mart Espenberg
CTO at Insly
We see them as partners who help us meet our goals rather than just contractors.
Bruno Monteiro
VP of Engineering at Avi Medical GmbH
I was most impressed with their communication.
Darren Pierce
CEO at MessageBuy
They were highly professional people while also being extremely friendly.
Rune Nielsen
Co-Founder at Volt ApS
Social Networking App Development: KnowApp
We implemented a social networking app development project to create a video-based event and content calendar enabling 100% direct celebrities-fans interaction.
Identity-Access Management Automation: Uniqkey
We have created an identity and access management automation system that is recommended for use even by the association of Danish Auditors.
B2B Insurance Claims Automation
We have developed an insurance claims automation solution, which robotically validates 80% of all insurance claims with no human involvement.
A Chrome Extension for Invoice Workflow Processing: Garmentier
Fively created a chrome extension for invoice workflow processing that provided customers with a personalized experience and allowed to increase sales up to 77%.
Medical Resource Management Application: AviMedical
Fively has developed a cutting-edge custom medical resource management app for a chain of modern practices caring about numerous patients across Germany.
CRM Customization and Configuration: Volt
We have provided our CRM customization services to the company, that electrifies dozens of widely-known music festivals all across Europe.
Patient Management Platform: SNAP
Our engineers have developed a patient management platform that makes well-considered decisions based on artificial intelligence algorithms.
Insurance Workflow Automation Solution
Fively developed an insurance workflow automation solution that combines all steps from purchasing a policy to filing a claim and makes it a 5-minute procedure.
Web Platform Customization: WebinarNinja
Fively has provided web platform customization for #1 rated webinar platform by HubSpot, which makes it real to start your very first webinar in less than 10 seconds.
Here are real examples of our code reviews, where we uncover hidden bugs, refine architecture, and improve performance and code clarity. We don't just identify issues — we deliver clear, actionable recommendations with practical explanations to strengthen your product's long-term stability and maintainability.
Let's have a call and discuss your custom solution.
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A code review is a structured evaluation of source code to identify bugs, security weaknesses, performance issues, and design problems before the code reaches production.
Automated reviews rely on tools to detect patterns and known issues, while manual reviews are performed by experienced engineers who assess architecture, logic, scalability, and real-world impact.
Automated tools can’t fully understand business logic, design trade-offs, or system architecture. Manual reviews catch issues that tools miss and provide context-aware, actionable feedback.
Yes. We follow established best practices such as clean code principles, SOLID, OWASP security guidelines, performance optimization standards, and framework-specific conventions.
Our checklist typically covers code quality, readability, architecture, security risks, performance, test coverage, error handling, and maintainability — tailored to your tech stack and goals.
We analyze code for vulnerabilities, insecure patterns, dependency risks, and OWASP Top 10 issues, following HIPAA and SOC2 practices, and combining automated scans with senior-level manual inspection.
We use secure, read-only repository access, strict confidentiality agreements like NDAs, and follow internal data protection policies to optimize your code and ensure it remains fully protected.
We support a wide range of technologies, including JavaScript/TypeScript, React, Node.js, Next.js, Java, Python, Swift, and many modern frameworks. If you’re unsure, just ask — we’ll confirm compatibility.
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