Basic
Senior Software Engineer (Scanner)
Posted: 18.05.2026
Closing date: 02.07.2026
Job reference: b36c23f2ecd71975e3d541ef6063ca5c
Job information
Location
Lisboa, Lisbon Metropolitan Area, Portugal
Company
Jobio
Client / Employer
Snyk
Job reference
b36c23f2ecd71975e3d541ef6063ca5c
Listing type
Basic
EU work permit required
No
Posted
18.05.2026
Closing date
02.07.2026
Job description
Every day, the world gets more digital thanks to tens of millions of developers building the future faster than ever. But with exponential growth comes exponential risk, as outnumbered security teams struggle to secure mountains of code. This is where Snyk (pronounced “sneak”) comes in. Snyk is a developer security platform that makes it easy for development teams to find, prioritize, and fix security vulnerabilities in code, dependencies, containers, and cloud infrastructure — and do it all right from the start. Snyk is on a mission to make the world a more secure place by empowering developers to develop fast and stay secure. Joining Snyk means embracing our core values: One Team, Care Deeply, Customer Centric, and Forward Thinking. As a member of our team, you’ll have the opportunity to thrive in a dynamic environment where fostering collaboration, leading with empathy, driving business impact, and inspiring trust are at the heart of everything we do.Our OpportunitySnyk, a leader in developer security, has acquired Probely, a modern Dynamic Application Security Testing (DAST) provider based in Portugal, with coverage of API security testing and web applications.In this role, you will develop our scanner, a key component of our scanning engine, improving its vulnerability detection capabilities, while adding other features and improving existing ones. Our scanner works in tandem with our crawler, testing web applications and API in an efficient way without reporting false positives, requiring a strong collaboration between various engineering teams.You’ll Spend Your Time:Analyzing requirements, specifications, and technical design documents in preparation for development.Developing the scanner's core functionalities, such as integrating with existing scanning modules, scanning queue management, or authentication;Research, develop, and improve the scanner vulnerability detection capabilities.Contribute to our firing range by adding new vulnerable applications and endpoints for testing purposes.Work with the different teams to discuss and implement technical solutions fix and identify bugs.Implement tests for any developed code.Review and test teammate's codeWhat You’ll Need:At least 5 years of commercial experience as a Software Engineer.Solid programming skills in JavaStrong knowledge of web technologies (HTTP, XHR, authentication mechanisms, etc).Knowledge of security concepts, especially web application security, is highly valued.Proficiency in Git and code management tools like GitHub, GitLab, or Bitbucket.Ability to lift the performance of a team through coaching and mentoring of more junior engineers.Effective communicator both verbally and in writing. Able to work collaboratively, be curious and have a growth mindset.We’d be Lucky if You: Experience with Python is highly valued.Enjoy working on early stage products; talking with customers to identify, prioritize and solve problems iteratively and build something that they really love.Feed off complex technical problems and find solutions where others see roadblocks.Embrace challenges and learn from them.#LI-CR1We care deeply about the warm, inclusive environment we’ve created and we value diversity – we welcome applications from those typically underrepresented in tech. If you like the sound of this role but are not totally sure whether you’re the right person, do apply anyway! About SnykSnyk is committed to creating an inclusive and engaging environment where our employees can thrive as we rally behind our common mission to make the digital world a safer place. From Snyk employee resource groups, to global benefits that help our employees prioritize their health, wellness, financial security, and a work/life blend, we aim to support our employees along their entire journeys here at Snyk.Benefits & ProgramsPrioritize health, wellness, financial security, and life balance with programs tailored to your location and role.Flexible working hours, work-from home allowances, in-office perks, and time off for learning and self developmentGenerous vacation and wellness time off, country-specific holidays, and 100% paid parental leave for all caregiversHealth benefits, employee assistance plans, and annual wellness allowanceCountry-specific life insurance, disability benefits, and retirement/pension programs, plus mobile phone and education allowances
Skills
ABAP
adapt to changes in technological development plans
AJAX
Ajax Framework
analyse software specifications
Ansible
Apache Maven
Apache Tomcat
APL
ASP.NET
Assembly (computer programming)
blockchain openness
blockchain platforms
C
COBOL
CoffeeScript
collect customer feedback on applications
Common Lisp
computer programming
create flowchart diagram
cyber attack counter-measures
data visualisation software
debug software
defence standard procedures
define technical requirements
design user interface
develop automated migration methods
develop creative ideas
develop software prototype
do cloud refactoring
Drupal
Eclipse (integrated development environment software)
engineering principles
engineering processes
Erlang
Git
Groovy
Haskell
IBM WebSphere
ICT debugging tools
ICT security legislation
identify customer requirements
integrate system components
integrated development environment software
Internet of Things
interpret technical requirements
Java (computer programming)
JavaScript
JavaScript Framework
Jenkins (tools for software configuration management)
KDevelop
Laravel
Lisp
manage engineering project
Matlab
Microsoft Visual C++
migrate existing data
ML (computer programming)
MySQL
NoSQL
object-oriented modelling
Objective-C
OpenEdge Advanced Business Language
Oracle Application Development Framework
Pascal (computer programming)
perform scientific research
Perl
PHP
Project Management
Prolog (computer programming)
Puppet (tools for software configuration management)
Python (computer programming)
R
Ruby (computer programming)
Salt (tools for software configuration management)
SAP R3
SAS language
Scala
Scratch (computer programming)
screen reader
Smalltalk (computer programming)
smart contract
software anomalies
software frameworks
Spark
SQL
STAF
Swift (computer programming)
technical drawings
tools for software configuration management
Trading Software
TypeScript
use an application-specific interface
use automatic programming
use concurrent programming
use functional programming
use logic programming
use object-oriented programming
use query languages
use software design patterns
use software libraries
use technical drawing software
utilise computer-aided software engineering tools
utilise machine learning
VBScript
Visual Basic
Web Services
WordPress
World Wide Web Consortium standards
Xcode