What four candidates report about RES-Americas software interviews: recruiter and manager calls, live coding, resume-heavy technical sessions, design patterns, and slow or absent follow-up.
$90K
Avg. Base Comp
$110K
Avg. Total Comp
3-6 rounds
Typical Rounds
Not reported
Process Length
Four candidates describe RES-Americas software interviews, each for a different specialty: iOS, Android, infrastructure and Salesforce. Their experiences differ, so treat them as separate data points rather than one fixed process.
The iOS candidate reports a recruiter screen, a 45-minute hiring manager conversation on unit testing, project planning, stakeholder management and FDA compliance, and a 3-hour panel with live coding: a modulus-based algorithm problem, a SwiftUI challenge and a state machine problem. The Android candidate reports a recruiter call, a manager call and two 90-minute technical sessions. These centered on detailed resume questioning, including coroutine threading, Realm, API security, obfuscation, parameterized unit tests and a call-center flow design in CoderPad.
The Salesforce candidate, the only one who reported an offer, describes an HR call, skill assessments and four calls with different engineers or leads. Questions focused on practical scenarios, working through code in real time, design patterns and architectural decisions, with attention to working style. The infrastructure candidate found the programming and background questions straightforward.
Three of the four reported no offer, and several described long silences or automated rejections after the final stage. Applicants may want to ask about timelines early and keep other opportunities moving. Prepare to explain your past projects in depth, practice coding in a shared editor, and review the fundamentals of your specific stack.
Synthesized from 4 candidate reports by our editorial team.
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Real interview reports from people who went through the Renewable Energy Systems Americas, Inc. (RES-Americas) process.
I interviewed at RES-Americas for a software engineering role over several months in 2024 and 2025. The process was thorough and involved multiple rounds with different team members, which gave me a real sense of the company culture and how different people approach problems.
I started with an initial HR call to discuss the role and my background, followed by skill assessments that tested my technical foundation. The main interview rounds consisted of four separate calls, each with a different engineer or team lead. This structure was actually really valuable—I got to see multiple perspectives on how the team works and what they value. Each interviewer had their own style, which made the process feel less formulaic than some other companies I've interviewed with.
The technical questions focused on real-world scenarios rather than abstract algorithm problems. I was asked how I would approach certain technical challenges and had to work through code solutions in real time. There were also questions on design patterns and architectural decisions, which suggested they care about not just whether you can code, but how you think about building maintainable systems. The interviewers were clear and structured in how they posed problems, which made it easier to understand what they were looking for.
One thing that stood out was how much emphasis they placed on cultural fit and working style. Since I spoke with four different people, it became clear pretty quickly whether I'd actually enjoy working with this team day-to-day. The company seemed genuinely interested in onboarding and training, which was reassuring. Overall, the process felt professional and well-organized, and I came away with a solid understanding of what the role would entail.
Prep tip from this candidate
Be ready to discuss how you'd approach real-world technical scenarios with code—they don't ask you to recite algorithms, but rather to think through practical problem-solving. Brush up on design patterns since that's a key area they probe on.
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Sourced from candidate reports and verified by our team.
Topics based on recent interview experiences.
Featured question at Renewable Energy Systems Americas, Inc. (RES-Americas)
Select the 2nd highest salary in the engineering department
| Question | |
|---|---|
| Size of Joins | |
| Prime to N | |
| Retailer Data Warehouse | |
| Bagging vs Boosting | |
| Hurdles In Data Projects | |
| The Brackets Problem | |
| Real-Time Transaction Streaming | |
| Flatten N-Dimensional Array to 1D Array | |
| Nearest Common Ancestor | |
| Total Time in Flight | |
| Flatten JSON | |
| Find Duplicate Numbers in a List | |
| Success Measurement | |
| Digit Accumulator | |
| Multi-Reaction | |
| Time Difference | |
| RAG Strict Source Control | |
| Walking Robot | |
| Concurrent LLM Serving | |
| Worker Distribution Dilemma | |
| Implementing the Fibonacci Sequence in Three Different Methods | |
| Log Anomaly Detection Model | |
| Data Pipelines and Aggregation | |
| Legacy System Heartbeat Monitor | |
| Mapping Nicknames | |
| Ticket Reservation Locking | |
| Uniform Car Maker | |
| Search Timeout | |
| Finding the Maximum Number in a List |
Synthesized from candidate reports. Individual experiences may vary.
Candidates report opening with a recruiter or HR call of about 30 minutes covering the role and their background. One candidate says follow-up after an earlier screening went unanswered, so applicants may want to ask about next steps and timing on this call.
Two candidates describe a hiring manager call of 30 to 45 minutes. The iOS candidate reports topics such as unit testing, project planning, stakeholder management and FDA compliance. Prepare to discuss past project decisions and how you work with non-engineering stakeholders.
The Salesforce candidate mentions skill assessments before the main interviews. The iOS candidate reports a 3-hour live coding panel covering an algorithm, SwiftUI and a state machine. The Android candidate describes two 90-minute sessions with many rapid questions. Expect role-specific content and practice coding live.
The Salesforce candidate reports four calls with different engineers or team leads, covering real-world scenarios, code walkthroughs, design patterns and working style. The Android and iOS candidates describe panels of engineers, some based outside the US. Be ready for resume-driven questions and architecture discussion.
Outcomes differed: one candidate reports an offer, while three report no offer. Two describe silence or an automated rejection after the final stage, and one needed repeated follow-ups. Candidates may want to ask for a decision date and keep other applications active while waiting.
